diff --git a/build.gradle b/build.gradle
new file mode 100644
index 0000000..66f27ae
--- /dev/null
+++ b/build.gradle
@@ -0,0 +1,29 @@
+
+apply plugin: 'java-library'
+
+group 'com.reandroid.lib.arsc'
+version '1.0.0'
+
+java {
+    sourceCompatibility JavaVersion.VERSION_1_8
+    targetCompatibility JavaVersion.VERSION_1_8
+}
+
+if (JavaVersion.current().isJava8Compatible()) {
+    allprojects {
+        tasks.compileJava {
+            //options.addStringOption('-Xlint:unchecked', '-quiet')
+        }
+    }
+}
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+
+}
+
+processResources.inputs.property('version', version)
+processResources.expand('version': version)
+
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..e708b1c
Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..8a91a6b
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https://services.gradle.org/distributions/gradle-6.5.1-all.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/settings.gradle b/settings.gradle
new file mode 100644
index 0000000..ee948dd
--- /dev/null
+++ b/settings.gradle
@@ -0,0 +1,2 @@
+rootProject.name = 'ARSCLib'
+
diff --git a/src/main/java/com/reandroid/lib/arsc/BuildInfo.java b/src/main/java/com/reandroid/lib/arsc/BuildInfo.java
new file mode 100644
index 0000000..27fe016
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/BuildInfo.java
@@ -0,0 +1,41 @@
+package com.reandroid.lib.arsc;
+
+import java.io.InputStream;
+import java.util.Properties;
+
+public class BuildInfo {
+    private static Properties sProperties;
+
+    public static String getName(){
+        Properties properties=getProperties();
+        return properties.getProperty("lib.name", "ARSCLib");
+    }
+    public static String getVersion(){
+        Properties properties=getProperties();
+        return properties.getProperty("lib.version", "");
+    }
+    public static String getRepo(){
+        Properties properties=getProperties();
+        return properties.getProperty("lib.repo", "https://github.com/REAndroid");
+    }
+    public static String getDescription(){
+        Properties properties=getProperties();
+        return properties.getProperty("lib.description", "Failed to load properties");
+    }
+    
+    private static Properties getProperties(){
+        if(sProperties==null){
+            sProperties=loadProperties();
+        }
+        return sProperties;
+    }
+    private static Properties loadProperties(){
+        InputStream inputStream=BuildInfo.class.getResourceAsStream("/lib.properties");
+        Properties properties=new Properties();
+        try{
+            properties.load(inputStream);
+        }catch (Exception ignored){
+        }
+        return properties;
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/array/EntryBlockArray.java b/src/main/java/com/reandroid/lib/arsc/array/EntryBlockArray.java
new file mode 100644
index 0000000..4cfcf61
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/array/EntryBlockArray.java
@@ -0,0 +1,25 @@
+package com.reandroid.lib.arsc.array;
+
+import com.reandroid.lib.arsc.item.IntegerArray;
+import com.reandroid.lib.arsc.item.IntegerItem;
+import com.reandroid.lib.arsc.value.EntryBlock;
+
+
+public class EntryBlockArray extends OffsetBlockArray<EntryBlock> {
+    public EntryBlockArray(IntegerArray offsets, IntegerItem itemCount, IntegerItem itemStart){
+        super(offsets, itemCount, itemStart);
+    }
+
+
+
+    @Override
+    public EntryBlock newInstance() {
+        return new EntryBlock();
+    }
+
+    @Override
+    public EntryBlock[] newInstance(int len) {
+        return new EntryBlock[len];
+    }
+
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/array/LibraryInfoArray.java b/src/main/java/com/reandroid/lib/arsc/array/LibraryInfoArray.java
new file mode 100644
index 0000000..ed52efb
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/array/LibraryInfoArray.java
@@ -0,0 +1,33 @@
+package com.reandroid.lib.arsc.array;
+
+import com.reandroid.lib.arsc.base.BlockArray;
+import com.reandroid.lib.arsc.io.BlockReader;
+import com.reandroid.lib.arsc.item.IntegerItem;
+import com.reandroid.lib.arsc.value.LibraryInfo;
+
+import java.io.IOException;
+
+public class LibraryInfoArray extends BlockArray<LibraryInfo> {
+    private final IntegerItem mInfoCount;
+    public LibraryInfoArray(IntegerItem infoCount){
+        this.mInfoCount=infoCount;
+    }
+    @Override
+    public LibraryInfo newInstance() {
+        return new LibraryInfo();
+    }
+    @Override
+    public LibraryInfo[] newInstance(int len) {
+        return new LibraryInfo[len];
+    }
+    @Override
+    protected void onRefreshed() {
+        mInfoCount.set(childesCount());
+    }
+
+    @Override
+    public void onReadBytes(BlockReader reader) throws IOException {
+        setChildesCount(mInfoCount.get());
+        super.onReadBytes(reader);
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/array/OffsetBlockArray.java b/src/main/java/com/reandroid/lib/arsc/array/OffsetBlockArray.java
new file mode 100644
index 0000000..5af4929
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/array/OffsetBlockArray.java
@@ -0,0 +1,177 @@
+package com.reandroid.lib.arsc.array;
+
+
+import com.reandroid.lib.arsc.base.Block;
+import com.reandroid.lib.arsc.base.BlockArray;
+import com.reandroid.lib.arsc.io.BlockLoad;
+import com.reandroid.lib.arsc.io.BlockReader;
+import com.reandroid.lib.arsc.item.ByteArray;
+import com.reandroid.lib.arsc.item.IntegerArray;
+import com.reandroid.lib.arsc.item.IntegerItem;
+
+
+import java.io.IOException;
+import java.io.OutputStream;
+
+public abstract class OffsetBlockArray<T extends Block> extends BlockArray<T> implements BlockLoad {
+    private final IntegerArray mOffsets;
+    private final IntegerItem mItemStart;
+    private final IntegerItem mItemCount;
+    private final ByteArray mEnd4Block;
+    private byte mEnd4Type;
+    public OffsetBlockArray(IntegerArray offsets, IntegerItem itemCount, IntegerItem itemStart){
+        super();
+        this.mOffsets=offsets;
+        this.mItemCount=itemCount;
+        this.mItemStart=itemStart;
+        this.mEnd4Block=new ByteArray();
+        mItemCount.setBlockLoad(this);
+    }
+    void setEndBytes(byte b){
+        this.mEnd4Type=b;
+        this.mEnd4Block.fill(b);
+    }
+    @Override
+    public int countBytes(){
+        int result=super.countBytes();
+        int endCount=mEnd4Block.countBytes();
+        return result+endCount;
+    }
+    @Override
+    public byte[] getBytes(){
+        byte[] results=super.getBytes();
+        if(results==null){
+            return null;
+        }
+        byte[] endBytes=mEnd4Block.getBytes();
+        results=addBytes(results, endBytes);
+        return results;
+    }
+    @Override
+    public int onWriteBytes(OutputStream stream) throws IOException {
+        int result=super.onWriteBytes(stream);
+        if(result==0){
+            return 0;
+        }
+        result+=mEnd4Block.writeBytes(stream);
+        return result;
+    }
+    @Override
+    protected void onRefreshed() {
+        mOffsets.setSize(childesCount());
+        T[] childes=getChildes();
+        int sum=0;
+        if(childes!=null){
+            int max=childes.length;
+            for(int i=0;i<max;i++){
+                T item=childes[i];
+                int offset;
+                if(item==null || item.isNull()){
+                    offset=-1;
+                }else {
+                    offset=sum;
+                    sum+=item.countBytes();
+                }
+                mOffsets.put(i, offset);
+            }
+        }
+        refreshCount();
+        refreshStart();
+        refreshEnd4Block();
+    }
+    private void refreshCount(){
+        mItemCount.set(childesCount());
+    }
+    private void refreshStart(){
+        Block parent=getParent();
+        if(parent==null){
+            return;
+        }
+        int start=parent.countUpTo(this);
+        mItemStart.set(start);
+    }
+    void refreshEnd4Block(BlockReader reader, ByteArray end4Block) throws IOException{
+        refreshEnd4Block();
+    }
+    void refreshEnd4Block(ByteArray end4Block){
+        if(childesCount()==0){
+            end4Block.clear();
+            return;
+        }
+        int count=countBytes();
+        if(count%4==0){
+            return;
+        }
+        end4Block.clear();
+        count=countBytes();
+        int add=0;
+        int rem=count%4;
+        while (rem!=0){
+            add++;
+            count++;
+            rem=count%4;
+        }
+        end4Block.setSize(add);
+        end4Block.fill(mEnd4Type);
+    }
+    private void refreshEnd4Block(){
+        refreshEnd4Block(mEnd4Block);
+    }
+
+    @Override
+    public void onReadBytes(BlockReader reader) throws IOException{
+        T[] childes=getChildes();
+        if(childes==null||childes.length==0){
+            return;
+        }
+        int[] offsetArray=mOffsets.toArray();
+        int max=childes.length;
+        int start=mItemStart.get();
+        reader.seek(start);
+        int zeroPosition=reader.getPosition();
+        int maxPos=zeroPosition;
+        for(int i=0;i<max;i++){
+            T item=childes[i];
+            int offset=offsetArray[i];
+            if(offset==-1){
+                item.setNull(true);
+                continue;
+            }
+            int itemStart=zeroPosition+offset;
+            reader.seek(itemStart);
+            item.readBytes(reader);
+            int pos=reader.getPosition();
+            if(pos>maxPos){
+                maxPos=pos;
+            }
+        }
+        reader.seek(maxPos);
+        refreshEnd4Block(reader, mEnd4Block);
+    }
+    @Override
+    public void onBlockLoaded(BlockReader reader, Block sender) throws IOException {
+        if(sender==mItemCount){
+            int count=mItemCount.get();
+            setChildesCount(count);
+            mOffsets.setSize(count);
+        }
+    }
+
+    @Override
+    public String toString(){
+        StringBuilder builder=new StringBuilder();
+        builder.append(getClass().getSimpleName());
+        builder.append(": count = ");
+        int s= childesCount();
+        builder.append(s);
+        int count=mItemCount.get();
+        if(s!=count){
+            builder.append(", countValue=");
+            builder.append(count);
+        }
+        builder.append(", start=");
+        builder.append(mItemStart.get());
+        return builder.toString();
+    }
+
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/array/PackageArray.java b/src/main/java/com/reandroid/lib/arsc/array/PackageArray.java
new file mode 100644
index 0000000..2cc92ce
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/array/PackageArray.java
@@ -0,0 +1,42 @@
+package com.reandroid.lib.arsc.array;
+
+import com.reandroid.lib.arsc.base.Block;
+import com.reandroid.lib.arsc.base.BlockArray;
+import com.reandroid.lib.arsc.chunk.PackageBlock;
+import com.reandroid.lib.arsc.io.BlockLoad;
+import com.reandroid.lib.arsc.io.BlockReader;
+import com.reandroid.lib.arsc.item.IntegerItem;
+
+import java.io.IOException;
+
+public class PackageArray extends BlockArray<PackageBlock> implements BlockLoad {
+    private final IntegerItem mPackageCount;
+    public PackageArray(IntegerItem packageCount){
+        this.mPackageCount=packageCount;
+        mPackageCount.setBlockLoad(this);
+    }
+    @Override
+    public PackageBlock newInstance() {
+        return new PackageBlock();
+    }
+
+    @Override
+    public PackageBlock[] newInstance(int len) {
+        return new PackageBlock[len];
+    }
+
+    @Override
+    protected void onRefreshed() {
+        refreshPackageCount();
+    }
+    private void refreshPackageCount(){
+        mPackageCount.set(childesCount());
+    }
+
+    @Override
+    public void onBlockLoaded(BlockReader reader, Block sender) throws IOException {
+        if(sender==mPackageCount){
+            setChildesCount(mPackageCount.get());
+        }
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/array/ResValueBagItemArray.java b/src/main/java/com/reandroid/lib/arsc/array/ResValueBagItemArray.java
new file mode 100644
index 0000000..3b47020
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/array/ResValueBagItemArray.java
@@ -0,0 +1,24 @@
+package com.reandroid.lib.arsc.array;
+
+import com.reandroid.lib.arsc.base.BlockArray;
+import com.reandroid.lib.arsc.value.ResValueBagItem;
+
+public class ResValueBagItemArray extends BlockArray<ResValueBagItem> {
+    public ResValueBagItemArray(){
+        super();
+    }
+    @Override
+    public ResValueBagItem newInstance() {
+        return new ResValueBagItem();
+    }
+
+    @Override
+    public ResValueBagItem[] newInstance(int len) {
+        return new ResValueBagItem[len];
+    }
+
+    @Override
+    protected void onRefreshed() {
+
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/array/ResXmlAttributeArray.java b/src/main/java/com/reandroid/lib/arsc/array/ResXmlAttributeArray.java
new file mode 100644
index 0000000..6411b5c
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/array/ResXmlAttributeArray.java
@@ -0,0 +1,39 @@
+package com.reandroid.lib.arsc.array;
+
+import com.reandroid.lib.arsc.base.BlockArray;
+import com.reandroid.lib.arsc.header.HeaderBlock;
+import com.reandroid.lib.arsc.io.BlockReader;
+import com.reandroid.lib.arsc.chunk.xml.ResXmlAttribute;
+import com.reandroid.lib.arsc.item.ShortItem;
+
+import java.io.IOException;
+
+public class ResXmlAttributeArray extends BlockArray<ResXmlAttribute> {
+    private final HeaderBlock mHeaderBlock;
+    private final ShortItem mAttributeStart;
+    private final ShortItem mAttributeCount;
+    public ResXmlAttributeArray(HeaderBlock headerBlock, ShortItem attributeStart, ShortItem attributeCount){
+        this.mHeaderBlock=headerBlock;
+        this.mAttributeStart=attributeStart;
+        this.mAttributeCount=attributeCount;
+    }
+    @Override
+    public ResXmlAttribute newInstance() {
+        return new ResXmlAttribute();
+    }
+    @Override
+    public ResXmlAttribute[] newInstance(int len) {
+        return new ResXmlAttribute[len];
+    }
+    @Override
+    protected void onRefreshed() {
+
+    }
+    @Override
+    public void onReadBytes(BlockReader reader) throws IOException {
+        int start=mHeaderBlock.getHeaderSize()+mAttributeStart.get();
+        reader.seek(start);
+        setChildesCount(mAttributeCount.get());
+        super.onReadBytes(reader);
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/array/ResXmlChunkArray.java b/src/main/java/com/reandroid/lib/arsc/array/ResXmlChunkArray.java
new file mode 100644
index 0000000..0a548a1
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/array/ResXmlChunkArray.java
@@ -0,0 +1,22 @@
+package com.reandroid.lib.arsc.array;
+
+import com.reandroid.lib.arsc.base.BlockArray;
+import com.reandroid.lib.arsc.chunk.xml.BaseXmlChunk;
+
+public class ResXmlChunkArray extends BlockArray<BaseXmlChunk> {
+
+    @Override
+    public BaseXmlChunk newInstance() {
+        return null;
+    }
+
+    @Override
+    public BaseXmlChunk[] newInstance(int len) {
+        return new BaseXmlChunk[len];
+    }
+
+    @Override
+    protected void onRefreshed() {
+
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/array/ResXmlIDArray.java b/src/main/java/com/reandroid/lib/arsc/array/ResXmlIDArray.java
new file mode 100644
index 0000000..2017d63
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/array/ResXmlIDArray.java
@@ -0,0 +1,89 @@
+package com.reandroid.lib.arsc.array;
+
+import com.reandroid.lib.arsc.base.BlockArray;
+import com.reandroid.lib.arsc.header.HeaderBlock;
+import com.reandroid.lib.arsc.io.BlockReader;
+import com.reandroid.lib.arsc.item.ResXmlID;
+
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+
+public class ResXmlIDArray extends BlockArray<ResXmlID> {
+    private final HeaderBlock mHeaderBlock;
+    private final Map<Integer, ResXmlID> mResIdMap;
+    private boolean mUpdated;
+    public ResXmlIDArray(HeaderBlock headerBlock){
+        super();
+        this.mHeaderBlock=headerBlock;
+        this.mResIdMap=new HashMap<>();
+    }
+    public void addResourceId(int index, int resId){
+        if(index<0){
+            return;
+        }
+        ensureSize(index+1);
+        ResXmlID xmlID=get(index);
+        if(xmlID!=null){
+            xmlID.set(resId);
+        }
+    }
+    public ResXmlID getOrCreate(int resId){
+        updateIdMap();
+        ResXmlID xmlID=mResIdMap.get(resId);
+        if(xmlID!=null){
+            return xmlID;
+        }
+        xmlID=new ResXmlID(resId);
+        add(xmlID);
+        mUpdated=true;
+        mResIdMap.put(resId, xmlID);
+        return xmlID;
+    }
+    public ResXmlID getByResId(int resId){
+        updateIdMap();
+        return mResIdMap.get(resId);
+    }
+    private void updateIdMap(){
+        if(mUpdated){
+            return;
+        }
+        mUpdated=true;
+        mResIdMap.clear();
+        ResXmlID[] allChildes=getChildes();
+        if(allChildes==null||allChildes.length==0){
+            return;
+        }
+        int max=allChildes.length;
+        for(int i=0;i<max;i++){
+            ResXmlID xmlID=allChildes[i];
+            mResIdMap.put(xmlID.get(), xmlID);
+        }
+    }
+    @Override
+    public ResXmlID newInstance() {
+        mUpdated=false;
+        return new ResXmlID();
+    }
+    @Override
+    public ResXmlID[] newInstance(int len) {
+        mUpdated=false;
+        return new ResXmlID[len];
+    }
+    @Override
+    protected void onRefreshed() {
+
+    }
+    @Override
+    public void onReadBytes(BlockReader reader) throws IOException {
+        int count=calculateCountFromHeaderBlock();
+        setChildesCount(count);
+        super.onReadBytes(reader);
+        updateIdMap();
+    }
+    private int calculateCountFromHeaderBlock(){
+        int count=mHeaderBlock.getChunkSize()-mHeaderBlock.getHeaderSize();
+        count=count/4;
+        return count;
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/array/ResXmlStringArray.java b/src/main/java/com/reandroid/lib/arsc/array/ResXmlStringArray.java
new file mode 100644
index 0000000..ce9865b
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/array/ResXmlStringArray.java
@@ -0,0 +1,19 @@
+package com.reandroid.lib.arsc.array;
+
+import com.reandroid.lib.arsc.item.IntegerArray;
+import com.reandroid.lib.arsc.item.IntegerItem;
+import com.reandroid.lib.arsc.item.ResXmlString;
+
+public class ResXmlStringArray extends StringArray<ResXmlString> {
+    public ResXmlStringArray(IntegerArray offsets, IntegerItem itemCount, IntegerItem itemStart, boolean is_utf8) {
+        super(offsets, itemCount, itemStart, is_utf8);
+    }
+    @Override
+    public ResXmlString newInstance() {
+        return new ResXmlString(isUtf8());
+    }
+    @Override
+    public ResXmlString[] newInstance(int len) {
+        return new ResXmlString[len];
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/array/SpecBlockArray.java b/src/main/java/com/reandroid/lib/arsc/array/SpecBlockArray.java
new file mode 100644
index 0000000..d2e76ae
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/array/SpecBlockArray.java
@@ -0,0 +1,24 @@
+package com.reandroid.lib.arsc.array;
+
+import com.reandroid.lib.arsc.base.BlockArray;
+import com.reandroid.lib.arsc.chunk.SpecBlock;
+
+public class SpecBlockArray extends BlockArray<SpecBlock> {
+    public SpecBlockArray(){
+        super();
+    }
+    @Override
+    public SpecBlock newInstance() {
+        return new SpecBlock();
+    }
+
+    @Override
+    public SpecBlock[] newInstance(int len) {
+        return new SpecBlock[len];
+    }
+
+    @Override
+    protected void onRefreshed() {
+
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/array/SpecStringArray.java b/src/main/java/com/reandroid/lib/arsc/array/SpecStringArray.java
new file mode 100644
index 0000000..9d3c90a
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/array/SpecStringArray.java
@@ -0,0 +1,19 @@
+package com.reandroid.lib.arsc.array;
+
+import com.reandroid.lib.arsc.item.IntegerArray;
+import com.reandroid.lib.arsc.item.IntegerItem;
+import com.reandroid.lib.arsc.item.SpecString;
+
+public class SpecStringArray extends StringArray<SpecString> {
+    public SpecStringArray(IntegerArray offsets, IntegerItem itemCount, IntegerItem itemStart, boolean is_utf8) {
+        super(offsets, itemCount, itemStart, is_utf8);
+    }
+    @Override
+    public SpecString newInstance() {
+        return new SpecString(isUtf8());
+    }
+    @Override
+    public SpecString[] newInstance(int len) {
+        return new SpecString[len];
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/array/SpecTypePairArray.java b/src/main/java/com/reandroid/lib/arsc/array/SpecTypePairArray.java
new file mode 100644
index 0000000..9506307
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/array/SpecTypePairArray.java
@@ -0,0 +1,22 @@
+package com.reandroid.lib.arsc.array;
+
+import com.reandroid.lib.arsc.base.BlockArray;
+import com.reandroid.lib.arsc.container.SpecTypePair;
+
+public class SpecTypePairArray extends BlockArray<SpecTypePair> {
+    public SpecTypePairArray(){
+        super();
+    }
+    @Override
+    public SpecTypePair newInstance() {
+        return new SpecTypePair();
+    }
+    @Override
+    public SpecTypePair[] newInstance(int len) {
+        return new SpecTypePair[len];
+    }
+    @Override
+    protected void onRefreshed() {
+
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/array/StringArray.java b/src/main/java/com/reandroid/lib/arsc/array/StringArray.java
new file mode 100644
index 0000000..3e61123
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/array/StringArray.java
@@ -0,0 +1,36 @@
+package com.reandroid.lib.arsc.array;
+
+import com.reandroid.lib.arsc.item.IntegerArray;
+import com.reandroid.lib.arsc.item.IntegerItem;
+import com.reandroid.lib.arsc.item.StringItem;
+
+public abstract class StringArray<T extends StringItem> extends OffsetBlockArray<T>{
+    private boolean mUtf8;
+    public StringArray(IntegerArray offsets, IntegerItem itemCount, IntegerItem itemStart, boolean is_utf8) {
+        super(offsets, itemCount, itemStart);
+        this.mUtf8=is_utf8;
+        setEndBytes((byte)0x00);
+    }
+    public void setUtf8(boolean is_utf8){
+        if(mUtf8==is_utf8){
+            return;
+        }
+        mUtf8=is_utf8;
+        T[] childes=getChildes();
+        if(childes!=null){
+            int max=childes.length;
+            for(int i=0;i<max;i++){
+                childes[i].setUtf8(is_utf8);
+            }
+        }
+    }
+    public boolean isUtf8() {
+        return mUtf8;
+    }
+
+    @Override
+    protected void refreshChildes(){
+        // Not required
+    }
+
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/array/StyleArray.java b/src/main/java/com/reandroid/lib/arsc/array/StyleArray.java
new file mode 100644
index 0000000..4225e5d
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/array/StyleArray.java
@@ -0,0 +1,55 @@
+package com.reandroid.lib.arsc.array;
+
+import com.reandroid.lib.arsc.io.BlockReader;
+import com.reandroid.lib.arsc.item.ByteArray;
+import com.reandroid.lib.arsc.item.IntegerArray;
+import com.reandroid.lib.arsc.item.IntegerItem;
+import com.reandroid.lib.arsc.item.StyleItem;
+
+import java.io.IOException;
+
+public class StyleArray extends OffsetBlockArray<StyleItem> {
+    public StyleArray(IntegerArray offsets, IntegerItem itemCount, IntegerItem itemStart) {
+        super(offsets, itemCount, itemStart);
+        setEndBytes(END_BYTE);
+    }
+    @Override
+    void refreshEnd4Block(BlockReader reader, ByteArray end4Block) throws IOException {
+        end4Block.clear();
+        if(reader.available()<4){
+            return;
+        }
+        IntegerItem integerItem=new IntegerItem();
+        while (reader.available()>=4){
+            int pos=reader.getPosition();
+            integerItem.readBytes(reader);
+            if(integerItem.get()!=0xFFFFFFFF){
+                reader.seek(pos);
+                break;
+            }
+            end4Block.add(integerItem.getBytes());
+        }
+    }
+    @Override
+    void refreshEnd4Block(ByteArray end4Block) {
+        super.refreshEnd4Block(end4Block);
+        if(childesCount()==0){
+            return;
+        }
+        end4Block.ensureArraySize(8);
+        end4Block.fill(END_BYTE);
+    }
+    @Override
+    protected void refreshChildes(){
+        // Not required
+    }
+    @Override
+    public StyleItem newInstance() {
+        return new StyleItem();
+    }
+    @Override
+    public StyleItem[] newInstance(int len) {
+        return new StyleItem[len];
+    }
+    private static final byte END_BYTE= (byte) 0xFF;
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/array/TableStringArray.java b/src/main/java/com/reandroid/lib/arsc/array/TableStringArray.java
new file mode 100644
index 0000000..086e0c1
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/array/TableStringArray.java
@@ -0,0 +1,19 @@
+package com.reandroid.lib.arsc.array;
+
+import com.reandroid.lib.arsc.item.IntegerArray;
+import com.reandroid.lib.arsc.item.IntegerItem;
+import com.reandroid.lib.arsc.item.TableString;
+
+public class TableStringArray extends StringArray<TableString> {
+    public TableStringArray(IntegerArray offsets, IntegerItem itemCount, IntegerItem itemStart, boolean is_utf8) {
+        super(offsets, itemCount, itemStart, is_utf8);
+    }
+    @Override
+    public TableString newInstance() {
+        return new TableString(isUtf8());
+    }
+    @Override
+    public TableString[] newInstance(int len) {
+        return new TableString[len];
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/array/TypeBlockArray.java b/src/main/java/com/reandroid/lib/arsc/array/TypeBlockArray.java
new file mode 100644
index 0000000..42fc66b
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/array/TypeBlockArray.java
@@ -0,0 +1,127 @@
+package com.reandroid.lib.arsc.array;
+
+import com.reandroid.lib.arsc.chunk.ChunkType;
+import com.reandroid.lib.arsc.base.Block;
+import com.reandroid.lib.arsc.base.BlockArray;
+import com.reandroid.lib.arsc.chunk.SpecBlock;
+import com.reandroid.lib.arsc.chunk.TypeBlock;
+import com.reandroid.lib.arsc.header.HeaderBlock;
+import com.reandroid.lib.arsc.io.BlockReader;
+import com.reandroid.lib.arsc.value.ResConfig;
+
+import java.io.IOException;
+import java.util.AbstractList;
+import java.util.List;
+
+public class TypeBlockArray extends BlockArray<TypeBlock> {
+    private byte mTypeId;
+    public TypeBlockArray(){
+        super();
+    }
+    public void setTypeId(byte id){
+        this.mTypeId=id;
+        TypeBlock[] allChildes=getChildes();
+        if(allChildes==null){
+            return;
+        }
+        int max=allChildes.length;
+        for(int i=0;i<max;i++){
+            TypeBlock typeBlock = allChildes[i];
+            typeBlock.setTypeId(id);
+        }
+    }
+    public byte getTypeId(){
+        if(mTypeId != 0){
+            return mTypeId;
+        }
+        SpecBlock specBlock=getSpecBlock();
+        if(specBlock!=null){
+            byte id=specBlock.getTypeId();
+            if(id!=0){
+                mTypeId=id;
+                return id;
+            }
+        }
+        TypeBlock[] allChildes=getChildes();
+        if(allChildes==null){
+            return 0;
+        }
+        int max=allChildes.length;
+        for(int i=0;i<max;i++){
+            TypeBlock typeBlock = allChildes[i];
+            byte id=typeBlock.getTypeId();
+            if(id==0){
+                continue;
+            }
+            if(specBlock!=null){
+                specBlock.setTypeId(id);
+            }
+            mTypeId=id;
+            return id;
+        }
+        return 0;
+    }
+    public List<ResConfig> listResConfig(){
+        return new AbstractList<ResConfig>() {
+            @Override
+            public ResConfig get(int i) {
+                TypeBlock typeBlock=TypeBlockArray.this.get(i);
+                if(typeBlock!=null){
+                    return typeBlock.getResConfig();
+                }
+                return null;
+            }
+
+            @Override
+            public int size() {
+                return TypeBlockArray.this.childesCount();
+            }
+        };
+    }
+    private SpecBlock getSpecBlock(){
+        Block parent=getParent();
+        while(parent!=null){
+            if(parent instanceof SpecBlock){
+                return (SpecBlock)parent;
+            }
+            parent=parent.getParent();
+        }
+        return null;
+    }
+    @Override
+    public TypeBlock newInstance() {
+        byte id=getTypeId();
+        TypeBlock typeBlock=new TypeBlock();
+        typeBlock.setTypeId(id);
+        return typeBlock;
+    }
+    @Override
+    public TypeBlock[] newInstance(int len) {
+        return new TypeBlock[len];
+    }
+    @Override
+    protected void onRefreshed() {
+
+    }
+    @Override
+    public void onReadBytes(BlockReader reader) throws IOException {
+        boolean readOk=true;
+        while (readOk){
+            readOk=readTypeBlockArray(reader);
+        }
+    }
+    private boolean readTypeBlockArray(BlockReader reader) throws IOException{
+        HeaderBlock headerBlock=reader.readHeaderBlock();
+        if(headerBlock==null){
+            return false;
+        }
+        ChunkType chunkType=headerBlock.getChunkType();
+        if(chunkType!=ChunkType.TYPE){
+            return false;
+        }
+        int pos=reader.getPosition();
+        TypeBlock typeBlock=createNext();
+        typeBlock.readBytes(reader);
+        return reader.getPosition()>pos;
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/array/TypeStringArray.java b/src/main/java/com/reandroid/lib/arsc/array/TypeStringArray.java
new file mode 100644
index 0000000..8b58e11
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/array/TypeStringArray.java
@@ -0,0 +1,19 @@
+package com.reandroid.lib.arsc.array;
+
+import com.reandroid.lib.arsc.item.IntegerArray;
+import com.reandroid.lib.arsc.item.IntegerItem;
+import com.reandroid.lib.arsc.item.TypeString;
+
+public class TypeStringArray extends StringArray<TypeString> {
+    public TypeStringArray(IntegerArray offsets, IntegerItem itemCount, IntegerItem itemStart, boolean is_utf8) {
+        super(offsets, itemCount, itemStart, is_utf8);
+    }
+    @Override
+    public TypeString newInstance() {
+        return new TypeString(isUtf8());
+    }
+    @Override
+    public TypeString[] newInstance(int len) {
+        return new TypeString[len];
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/base/Block.java b/src/main/java/com/reandroid/lib/arsc/base/Block.java
new file mode 100644
index 0000000..947e1e8
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/base/Block.java
@@ -0,0 +1,87 @@
+package com.reandroid.lib.arsc.base;
+
+import com.reandroid.lib.arsc.io.BlockLoad;
+import com.reandroid.lib.arsc.io.BlockReader;
+
+import java.io.IOException;
+import java.io.OutputStream;
+
+public abstract class Block {
+    private int mIndex;
+    private Block mParent;
+    private boolean mNull;
+    private BlockLoad mBlockLoad;
+    public abstract byte[] getBytes();
+    public abstract int countBytes();
+    public final int countUpTo(Block block){
+        BlockCounter counter=new BlockCounter(block);
+        onCountUpTo(counter);
+        return counter.COUNT;
+    }
+    public abstract void onCountUpTo(BlockCounter counter);
+    public final void readBytes(BlockReader reader) throws IOException{
+        onReadBytes(reader);
+        notifyBlockLoad(reader);
+    }
+    public final void setBlockLoad(BlockLoad blockLoad){
+        mBlockLoad=blockLoad;
+    }
+    private void notifyBlockLoad(BlockReader reader) throws IOException{
+        BlockLoad blockLoad=mBlockLoad;
+        if(blockLoad!=null){
+            blockLoad.onBlockLoaded(reader, this);
+        }
+    }
+    public void onReadBytes(BlockReader reader) throws IOException{
+
+    }
+    public final int writeBytes(OutputStream stream) throws IOException{
+        if(isNull()){
+            return 0;
+        }
+        return onWriteBytes(stream);
+    }
+    protected abstract int onWriteBytes(OutputStream stream) throws IOException;
+    public boolean isNull(){
+        return mNull;
+    }
+    public void setNull(boolean is_null){
+        mNull=is_null;
+    }
+    public final int getIndex(){
+        return mIndex;
+    }
+    public final void setIndex(int index){
+        mIndex=index;
+    }
+    public final void setParent(Block parent){
+        if(parent==this){
+            return;
+        }
+        mParent=parent;
+    }
+    public final Block getParent(){
+        return mParent;
+    }
+
+
+    protected static byte[] addBytes(byte[] bts1, byte[] bts2){
+        boolean empty1=(bts1==null || bts1.length==0);
+        boolean empty2=(bts2==null || bts2.length==0);
+        if(empty1 && empty2){
+            return null;
+        }
+        if(empty1){
+            return bts2;
+        }
+        if(empty2){
+            return bts1;
+        }
+        int len=bts1.length+bts2.length;
+        byte[] result=new byte[len];
+        int start=bts1.length;
+        System.arraycopy(bts1, 0, result, 0, start);
+        System.arraycopy(bts2, 0, result, start, bts2.length);
+        return result;
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/base/BlockArray.java b/src/main/java/com/reandroid/lib/arsc/base/BlockArray.java
new file mode 100644
index 0000000..ee45c4c
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/base/BlockArray.java
@@ -0,0 +1,220 @@
+package com.reandroid.lib.arsc.base;
+
+import java.util.AbstractList;
+import java.util.Arrays;
+import java.util.List;
+
+
+public abstract class BlockArray<T extends Block> extends BlockContainer<T> implements BlockArrayCreator<T>  {
+    private T[] elementData;
+    public BlockArray(){
+        elementData= newInstance(0);
+    }
+    public List<T> listItems(){
+        return new AbstractList<T>() {
+            @Override
+            public T get(int i) {
+                return BlockArray.this.get(i);
+            }
+            @Override
+            public int size() {
+                return BlockArray.this.childesCount();
+            }
+        };
+    }
+    @Override
+    public T[] getChildes(){
+        return elementData;
+    }
+    public void ensureSize(int size){
+        if(size<= childesCount()){
+            return;
+        }
+        setChildesCount(size);
+    }
+    public void setChildesCount(int count){
+        if(count<0){
+            count=0;
+        }
+        if(count==0){
+            clearChildes();
+            return;
+        }
+        int diff = count - childesCount();
+        if(diff==0){
+            return;
+        }
+        changeSize(diff);
+    }
+    public final void clearChildes(){
+        T[] allChildes=elementData;
+        if(allChildes==null || allChildes.length==0){
+            return;
+        }
+        int max=allChildes.length;
+        for(int i=0;i<max;i++){
+            T block=allChildes[i];
+            if(block==null){
+                continue;
+            }
+            block.setIndex(-1);
+            block.setParent(null);
+            allChildes[i]=null;
+        }
+        elementData=newInstance(0);
+    }
+
+    public void addAll(T[] blocks){
+        if(blocks==null||blocks.length==0){
+            return;
+        }
+        T[] old=elementData;
+        if(old==null){
+            old=newInstance(0);
+        }
+        int oldLen=old.length;
+        int len=blocks.length;
+        T[] update= newInstance(oldLen+len);
+        if(oldLen>0){
+            System.arraycopy(old, 0, update, 0, oldLen);
+        }
+        boolean foundNull=false;
+        for(int i=0;i<len;i++){
+            T item=blocks[i];
+            if(item==null){
+                foundNull=true;
+                continue;
+            }
+            int index=oldLen + i;
+            update[index]=item;
+            item.setParent(this);
+            item.setIndex(index);
+        }
+        elementData=update;
+        if(foundNull){
+            trimNullBlocks();
+        }
+    }
+    public void add(T block){
+        if(block==null){
+            return;
+        }
+        T[] old=elementData;
+        int index=old.length;
+        elementData= newInstance(index+1);
+        if(index>0){
+            System.arraycopy(old, 0, elementData, 0, index);
+        }
+        elementData[index]=block;
+        block.setIndex(index);
+        block.setParent(this);
+    }
+    public final int childesCount(){
+        return elementData.length;
+    }
+    public final T createNext(){
+        T block=newInstance();
+        add(block);
+        return block;
+    }
+    public final T get(int i){
+        if(i >= childesCount() || i<0){
+            return null;
+        }
+        return elementData[i];
+    }
+    public boolean contains(T block){
+        T[] items=elementData;
+        if(block==null || items==null){
+            return false;
+        }
+        int len=items.length;
+        for(int i=0;i<len;i++){
+            if(block==items[i]){
+                return true;
+            }
+        }
+        return false;
+    }
+    public boolean remove(T block){
+        T[] items=elementData;
+        if(block==null||items==null){
+            return false;
+        }
+        boolean found=false;
+        int len=items.length;
+        for(int i=0;i<len;i++){
+            if(block==items[i]){
+                items[i]=null;
+                found=true;
+            }
+        }
+        if(found){
+            trimNullBlocks();
+        }
+        return found;
+    }
+    private void trimNullBlocks(){
+        T[] items=elementData;
+        if(items==null){
+            return;
+        }
+        int count=countNonNull();
+        int len=items.length;
+        if(count==len){
+            return;
+        }
+        T[] update=newInstance(count);
+        int index=0;
+        for(int i=0;i<len;i++){
+            T block=items[i];
+            if(block!=null){
+                update[index]=block;
+                block.setIndex(index);
+                index++;
+            }
+        }
+        elementData=update;
+    }
+    private int countNonNull(){
+        T[] items=elementData;
+        if(items==null){
+            return 0;
+        }
+        int result=0;
+        for(T block:items){
+            if(block!=null){
+                result++;
+            }
+        }
+        return result;
+    }
+    private void changeSize(int amount){
+        T[] old=elementData;
+        int index=old.length;
+        int size=index+amount;
+        T[] update= newInstance(size);
+        int end;
+        if(index>size){
+            end=size;
+        }else {
+            end=index;
+        }
+        if(end>0){
+            System.arraycopy(old, 0, update, 0, end);
+        }
+        for(int i=end;i<size;i++){
+            T item=newInstance();
+            update[i]=item;
+            item.setIndex(i);
+            item.setParent(this);
+        }
+        elementData=update;
+        Arrays.fill(old, null);
+    }
+
+    @Override
+    public String toString(){
+        return "count="+ childesCount();
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/base/BlockArrayCreator.java b/src/main/java/com/reandroid/lib/arsc/base/BlockArrayCreator.java
new file mode 100644
index 0000000..2e82ad5
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/base/BlockArrayCreator.java
@@ -0,0 +1,5 @@
+package com.reandroid.lib.arsc.base;
+
+public interface BlockArrayCreator<T extends Block> extends BlockCreator<T>{
+    T[] newInstance(int len);
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/base/BlockContainer.java b/src/main/java/com/reandroid/lib/arsc/base/BlockContainer.java
new file mode 100644
index 0000000..b65082f
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/base/BlockContainer.java
@@ -0,0 +1,132 @@
+package com.reandroid.lib.arsc.base;
+
+import com.reandroid.lib.arsc.io.BlockReader;
+
+import java.io.IOException;
+import java.io.OutputStream;
+
+public abstract class BlockContainer<T extends Block> extends Block{
+    public BlockContainer(){
+        super();
+    }
+    protected abstract void onRefreshed();
+    public final void refresh(){
+        if(isNull()){
+            return;
+        }
+        refreshChildes();
+        onRefreshed();
+    }
+    protected void refreshChildes(){
+        T[] childes=getChildes();
+        if(childes!=null){
+            int max=childes.length;
+            for(int i=0;i<max;i++){
+                T item=childes[i];
+                if(item instanceof BlockContainer){
+                    BlockContainer container=(BlockContainer)item;
+                    container.refresh();
+                }
+            }
+        }
+    }
+    @Override
+    public void onCountUpTo(BlockCounter counter){
+        if(counter.FOUND){
+            return;
+        }
+        if(counter.END==this){
+            counter.FOUND=true;
+            return;
+        }
+        T[] childes=getChildes();
+        if(childes==null){
+            return;
+        }
+        int max=childes.length;
+        for(int i=0;i<max;i++){
+            if(counter.FOUND){
+                return;
+            }
+            T item=childes[i];
+            if(item!=null){
+                item.onCountUpTo(counter);
+            }
+        }
+    }
+    @Override
+    public int countBytes(){
+        if(isNull()){
+            return 0;
+        }
+        T[] childes=getChildes();
+        if(childes==null){
+            return 0;
+        }
+        int result=0;
+        int max=childes.length;
+        for(int i=0;i<max;i++){
+            T item=childes[i];
+            if(item!=null){
+                result += item.countBytes();
+            }
+        }
+        return result;
+    }
+    @Override
+    public byte[] getBytes(){
+        if(isNull()){
+            return null;
+        }
+        T[] childes=getChildes();
+        if(childes==null){
+            return null;
+        }
+        byte[] results=null;
+        int max=childes.length;
+        for(int i=0;i<max;i++){
+            T item=childes[i];
+            if(item!=null){
+                results = addBytes(results, item.getBytes());
+            }
+        }
+        return results;
+    }
+    @Override
+    public int onWriteBytes(OutputStream stream) throws IOException {
+        if(isNull()){
+            return 0;
+        }
+        T[] childes=getChildes();
+        if(childes==null){
+            return 0;
+        }
+        int result=0;
+        int max=childes.length;
+        for(int i=0;i<max;i++){
+            T item=childes[i];
+            if(item!=null){
+                result+=item.writeBytes(stream);
+            }
+        }
+        return result;
+    }
+
+    @Override
+    public void onReadBytes(BlockReader reader) throws IOException{
+        T[] childes=getChildes();
+        if(childes==null){
+            return;
+        }
+        int max=childes.length;
+        for(int i=0;i<max;i++){
+            T item=childes[i];
+            if(item!=null){
+                item.readBytes(reader);
+            }
+        }
+    }
+
+    public abstract int childesCount();
+    public abstract T[] getChildes();
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/base/BlockCounter.java b/src/main/java/com/reandroid/lib/arsc/base/BlockCounter.java
new file mode 100644
index 0000000..45b4161
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/base/BlockCounter.java
@@ -0,0 +1,16 @@
+package com.reandroid.lib.arsc.base;
+
+public class BlockCounter {
+    public final Block END;
+    public boolean FOUND;
+    int COUNT;
+    BlockCounter(Block end){
+        this.END=end;
+    }
+    public void addCount(int val){
+        if(FOUND){
+            return;
+        }
+        COUNT+=val;
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/base/BlockCreator.java b/src/main/java/com/reandroid/lib/arsc/base/BlockCreator.java
new file mode 100644
index 0000000..8b9ba45
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/base/BlockCreator.java
@@ -0,0 +1,5 @@
+package com.reandroid.lib.arsc.base;
+
+public interface BlockCreator<T extends Block> {
+    T newInstance();
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/chunk/BaseChunk.java b/src/main/java/com/reandroid/lib/arsc/chunk/BaseChunk.java
new file mode 100644
index 0000000..3334816
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/chunk/BaseChunk.java
@@ -0,0 +1,53 @@
+package com.reandroid.lib.arsc.chunk;
+
+import com.reandroid.lib.arsc.base.Block;
+import com.reandroid.lib.arsc.container.ExpandableBlockContainer;
+import com.reandroid.lib.arsc.header.HeaderBlock;
+import com.reandroid.lib.arsc.io.BlockReader;
+
+import java.io.IOException;
+
+public abstract class BaseChunk extends ExpandableBlockContainer {
+    private final HeaderBlock mHeaderBlock;
+    protected BaseChunk(short chunkType, int initialChildesCount) {
+        super(initialChildesCount+1);
+        mHeaderBlock=new HeaderBlock(chunkType);
+        addChild(mHeaderBlock);
+    }
+    protected BaseChunk(ChunkType chunkType, int initialChildesCount) {
+        this(chunkType.ID, initialChildesCount);
+    }
+    protected void addToHeader(Block block){
+        mHeaderBlock.addChild(block);
+    }
+    public HeaderBlock getHeaderBlock(){
+        return mHeaderBlock;
+    }
+    @Override
+    protected final void onRefreshed() {
+        mHeaderBlock.refreshHeader();
+        onChunkRefreshed();
+    }
+    protected abstract void onChunkRefreshed();
+    public void onChunkLoaded(){
+
+    }
+
+    @Override
+    public void onReadBytes(BlockReader reader) throws IOException {
+        HeaderBlock headerBlock=reader.readHeaderBlock();
+        BlockReader chunkReader=reader.create(reader.getPosition(), headerBlock.getChunkSize());
+        super.onReadBytes(chunkReader);
+        reader.offset(headerBlock.getChunkSize());
+        chunkReader.close();
+        onChunkLoaded();
+    }
+    @Override
+    public String toString(){
+        StringBuilder builder=new StringBuilder();
+        builder.append(getClass().getSimpleName());
+        builder.append(": ");
+        builder.append(mHeaderBlock.toString());
+        return builder.toString();
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/chunk/BaseTypeBlock.java b/src/main/java/com/reandroid/lib/arsc/chunk/BaseTypeBlock.java
new file mode 100644
index 0000000..4dc2261
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/chunk/BaseTypeBlock.java
@@ -0,0 +1,116 @@
+package com.reandroid.lib.arsc.chunk;
+
+import com.reandroid.lib.arsc.base.Block;
+import com.reandroid.lib.arsc.container.SpecTypePair;
+import com.reandroid.lib.arsc.item.ByteItem;
+import com.reandroid.lib.arsc.item.IntegerItem;
+import com.reandroid.lib.arsc.item.TypeString;
+import com.reandroid.lib.arsc.pool.TypeStringPool;
+
+abstract class BaseTypeBlock extends BaseChunk {
+    private final ByteItem mTypeId;
+    private final ByteItem mTypeFlags;
+    private final ByteItem mReserved1;
+    private final ByteItem mReserved2;
+    private final IntegerItem mEntryCount;
+    private TypeString mTypeString;
+    BaseTypeBlock(ChunkType chunkType, int initialChildesCount) {
+        super(chunkType, initialChildesCount);
+        this.mTypeId=new ByteItem();
+        this.mTypeFlags=new ByteItem();
+        this.mReserved1=new ByteItem();
+        this.mReserved2=new ByteItem();
+        this.mEntryCount=new IntegerItem();
+        addToHeader(mTypeId);
+        addToHeader(mTypeFlags);
+        addToHeader(mReserved1);
+        addToHeader(mReserved2);
+        addToHeader(mEntryCount);
+    }
+    public byte getTypeId(){
+        return mTypeId.get();
+    }
+    public void setTypeId(byte id){
+        mTypeId.set(id);
+    }
+    public void setEntryCount(int count){
+        if(count == mEntryCount.get()){
+            return;
+        }
+        mEntryCount.set(count);
+        onSetEntryCount(count);
+    }
+    public int getEntryCount(){
+        return mEntryCount.get();
+    }
+    public PackageBlock getPackageBlock(){
+        Block parent=getParent();
+        while (parent!=null){
+            if(parent instanceof SpecTypePair){
+                return ((SpecTypePair)parent).getPackageBlock();
+            }
+            parent=parent.getParent();
+        }
+        return null;
+    }
+    public TypeString getTypeString(){
+        if(mTypeString!=null){
+            if(mTypeString.getId()==getTypeId()){
+                return mTypeString;
+            }
+            mTypeString=null;
+        }
+        PackageBlock packageBlock=getPackageBlock();
+        if(packageBlock==null){
+            return null;
+        }
+        TypeStringPool typeStringPool=packageBlock.getTypeStringPool();
+        mTypeString=typeStringPool.getById(getTypeId());
+        return mTypeString;
+    }
+    SpecTypePair getSpecTypePair(){
+        Block parent=getParent();
+        while (parent!=null){
+            if(parent instanceof SpecTypePair){
+                return (SpecTypePair)parent;
+            }
+            parent=parent.getParent();
+        }
+        return null;
+    }
+    abstract void onSetEntryCount(int count);
+    IntegerItem getEntryCountBlock(){
+        return mEntryCount;
+    }
+    private TypeStringPool getTypeStringPool(){
+        PackageBlock packageBlock=getPackageBlock();
+        if(packageBlock!=null){
+            return packageBlock.getTypeStringPool();
+        }
+        return null;
+    }
+    @Override
+    public String toString(){
+        StringBuilder builder=new StringBuilder();
+        builder.append(getClass().getSimpleName());
+        builder.append(": ");
+        PackageBlock packageBlock=getPackageBlock();
+        if(packageBlock!=null){
+            builder.append("PKG=");
+            builder.append(String.format("0x%02x", packageBlock.getId()));
+            builder.append(" ");
+        }
+        builder.append(getHeaderBlock().toString());
+        builder.append(" entries=");
+        builder.append(getEntryCount());
+        builder.append(", id=");
+        builder.append(String.format("0x%02x", getTypeId()));
+        TypeString typeString=getTypeString();
+        if(typeString!=null){
+            builder.append('(');
+            builder.append(typeString.get());
+            builder.append(')');
+        }
+        return builder.toString();
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/chunk/ChunkType.java b/src/main/java/com/reandroid/lib/arsc/chunk/ChunkType.java
new file mode 100644
index 0000000..dd364c2
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/chunk/ChunkType.java
@@ -0,0 +1,75 @@
+package com.reandroid.lib.arsc.chunk;
+
+public enum ChunkType {
+    NULL((short)0x0000),
+
+    STRING((short)0x0001),
+    TABLE((short)0x0002),
+    XML((short)0x0003),
+
+    XML_START_NAMESPACE((short)0x0100),
+    XML_END_NAMESPACE((short)0x0101),
+    XML_START_ELEMENT((short)0x0102),
+    XML_END_ELEMENT((short)0x0103),
+    XML_CDATA((short)0x0104),
+    XML_LAST_CHUNK((short)0x017f),
+    XML_RESOURCE_MAP((short)0x0180),
+
+    PACKAGE((short)0x0200),
+    TYPE((short)0x0201),
+    SPEC((short)0x0202),
+    LIBRARY((short)0x0203);
+
+    public final short ID;
+    ChunkType(short id) {
+        this.ID = id;
+    }
+
+    @Override
+    public String toString(){
+        return name()+String.format("(0x%04x)", ((int) ID));
+    }
+
+    public static ChunkType get(short id){
+        ChunkType[] all=values();
+        for(ChunkType t:all){
+            if(t.ID ==id){
+                return t;
+            }
+        }
+        return null;
+    }
+
+    public static ChunkType getTable(short id){
+        for(ChunkType t:table_chunk_types){
+            if(t.ID ==id){
+                return t;
+            }
+        }
+        return null;
+    }
+    public static ChunkType getXml(short id){
+        for(ChunkType t:xml_chunk_types){
+            if(t.ID ==id){
+                return t;
+            }
+        }
+        return null;
+    }
+
+    private static final ChunkType[] table_chunk_types=new ChunkType[]{
+            PACKAGE,
+            TYPE,
+            SPEC,
+            LIBRARY
+    };
+    private static final ChunkType[] xml_chunk_types=new ChunkType[]{
+            XML_START_NAMESPACE,
+            XML_END_NAMESPACE,
+            XML_START_ELEMENT,
+            XML_END_ELEMENT,
+            XML_CDATA,
+            XML_LAST_CHUNK,
+            XML_RESOURCE_MAP
+    };
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/chunk/LibraryBlock.java b/src/main/java/com/reandroid/lib/arsc/chunk/LibraryBlock.java
new file mode 100644
index 0000000..52ee1c1
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/chunk/LibraryBlock.java
@@ -0,0 +1,57 @@
+package com.reandroid.lib.arsc.chunk;
+
+import com.reandroid.lib.arsc.array.LibraryInfoArray;
+import com.reandroid.lib.arsc.item.IntegerItem;
+import com.reandroid.lib.arsc.value.LibraryInfo;
+
+public class LibraryBlock extends BaseChunk {
+    private final IntegerItem mLibCount;
+    private final LibraryInfoArray mLibraryInfoArray;
+    public LibraryBlock() {
+        super(ChunkType.LIBRARY,1);
+        this.mLibCount=new IntegerItem();
+        this.mLibraryInfoArray=new LibraryInfoArray(mLibCount);
+
+        addToHeader(mLibCount);
+        addChild(mLibraryInfoArray);
+    }
+    public LibraryInfo[] getAllInfo(){
+        return mLibraryInfoArray.getChildes();
+    }
+    public void addLibraryInfo(LibraryBlock libraryBlock){
+        if(libraryBlock==null){
+            return;
+        }
+        LibraryInfo[] allInfo=libraryBlock.getAllInfo();
+        if (allInfo==null){
+            return;
+        }
+        for(LibraryInfo info:allInfo){
+            addLibraryInfo(info);
+        }
+    }
+    public void addLibraryInfo(LibraryInfo info){
+        if(info==null){
+            return;
+        }
+        mLibraryInfoArray.add(info);
+        mLibCount.set(mLibraryInfoArray.childesCount());
+    }
+    @Override
+    public boolean isNull(){
+        return mLibraryInfoArray.childesCount()==0;
+    }
+    public int getLibraryCount(){
+        return mLibraryInfoArray.childesCount();
+    }
+    public void setLibraryCount(int count){
+        mLibCount.set(count);
+        mLibraryInfoArray.setChildesCount(count);
+    }
+
+    @Override
+    protected void onChunkRefreshed() {
+        mLibCount.set(mLibraryInfoArray.childesCount());
+    }
+
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/chunk/PackageBlock.java b/src/main/java/com/reandroid/lib/arsc/chunk/PackageBlock.java
new file mode 100644
index 0000000..d08697f
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/chunk/PackageBlock.java
@@ -0,0 +1,137 @@
+package com.reandroid.lib.arsc.chunk;
+
+import com.reandroid.lib.arsc.array.SpecTypePairArray;
+import com.reandroid.lib.arsc.base.Block;
+import com.reandroid.lib.arsc.container.PackageLastBlocks;
+import com.reandroid.lib.arsc.item.IntegerItem;
+import com.reandroid.lib.arsc.item.PackageName;
+import com.reandroid.lib.arsc.pool.SpecStringPool;
+import com.reandroid.lib.arsc.pool.TypeStringPool;
+import com.reandroid.lib.arsc.value.LibraryInfo;
+
+
+public class PackageBlock extends BaseChunk {
+    private final IntegerItem mPackageId;
+    private final PackageName mPackageName;
+
+    private final IntegerItem mTypeStrings;
+    private final IntegerItem mLastPublicType;
+    private final IntegerItem mKeyStrings;
+    private final IntegerItem mLastPublicKey;
+    private final IntegerItem mTypeIdOffset;
+
+    private final TypeStringPool mTypeStringPool;
+    private final SpecStringPool mSpecStringPool;
+
+    private final SpecTypePairArray mSpecTypePairArray;
+    private final LibraryBlock mLibraryBlock;
+
+    private final PackageLastBlocks mPackageLastBlocks;
+
+    public PackageBlock() {
+        super(ChunkType.PACKAGE, 3);
+        this.mPackageId=new IntegerItem();
+        this.mPackageName=new PackageName();
+        this.mTypeStrings=new IntegerItem();
+        this.mLastPublicType=new IntegerItem();
+        this.mKeyStrings=new IntegerItem();
+        this.mLastPublicKey=new IntegerItem();
+        this.mTypeIdOffset=new IntegerItem();
+
+        this.mTypeStringPool=new TypeStringPool(false);
+        this.mSpecStringPool=new SpecStringPool(true);
+
+        this.mSpecTypePairArray=new SpecTypePairArray();
+        this.mLibraryBlock=new LibraryBlock();
+        this.mPackageLastBlocks=new PackageLastBlocks(mSpecTypePairArray, mLibraryBlock);
+
+        addToHeader(mPackageId);
+        addToHeader(mPackageName);
+        addToHeader(mTypeStrings);
+        addToHeader(mLastPublicType);
+        addToHeader(mKeyStrings);
+        addToHeader(mLastPublicKey);
+        addToHeader(mTypeIdOffset);
+
+        addChild(mTypeStringPool);
+        addChild(mSpecStringPool);
+
+        addChild(mPackageLastBlocks);
+
+    }
+    public int getId(){
+        return mPackageId.get();
+    }
+    public void setId(int id){
+        mPackageId.set(id);
+    }
+    public String getName(){
+        return mPackageName.get();
+    }
+    public void setName(String name){
+        mPackageName.set(name);
+    }
+
+
+    public TableBlock getTableBlock(){
+        Block parent=getParent();
+        while(parent!=null){
+            if(parent instanceof TableBlock){
+                return (TableBlock)parent;
+            }
+            parent=parent.getParent();
+        }
+        return null;
+    }
+    public TypeStringPool getTypeStringPool(){
+        return mTypeStringPool;
+    }
+    public SpecStringPool getSpecStringPool(){
+        return mSpecStringPool;
+    }
+
+    public void addLibrary(LibraryBlock libraryBlock){
+        if(libraryBlock==null){
+            return;
+        }
+        LibraryInfo[] allInfo=libraryBlock.getAllInfo();
+        if (allInfo==null){
+            return;
+        }
+        for(LibraryInfo info:allInfo){
+            addLibraryInfo(info);
+        }
+    }
+    public void addLibraryInfo(LibraryInfo info){
+        mLibraryBlock.addLibraryInfo(info);
+    }
+
+    private void refreshKeyStrings(){
+        int pos=countUpTo(mSpecStringPool);
+        mKeyStrings.set(pos);
+    }
+    @Override
+    public void onChunkLoaded() {
+    }
+
+    @Override
+    protected void onChunkRefreshed() {
+        refreshKeyStrings();
+    }
+
+    @Override
+    public String toString(){
+        StringBuilder builder=new StringBuilder();
+        builder.append(super.toString());
+        builder.append(", id=");
+        builder.append(String.format("0x%02x", getId()));
+        builder.append(", name=");
+        builder.append(getName());
+        int libCount=mLibraryBlock.getLibraryCount();
+        if(libCount>0){
+            builder.append(", libraries=");
+            builder.append(libCount);
+        }
+        return builder.toString();
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/chunk/SpecBlock.java b/src/main/java/com/reandroid/lib/arsc/chunk/SpecBlock.java
new file mode 100644
index 0000000..3c889d2
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/chunk/SpecBlock.java
@@ -0,0 +1,54 @@
+package com.reandroid.lib.arsc.chunk;
+
+import com.reandroid.lib.arsc.array.TypeBlockArray;
+import com.reandroid.lib.arsc.base.Block;
+import com.reandroid.lib.arsc.container.SpecTypePair;
+import com.reandroid.lib.arsc.io.BlockLoad;
+import com.reandroid.lib.arsc.io.BlockReader;
+import com.reandroid.lib.arsc.item.IntegerArray;
+import com.reandroid.lib.arsc.item.IntegerItem;
+
+import java.io.IOException;
+
+public class SpecBlock extends BaseTypeBlock implements BlockLoad {
+    private final IntegerArray mOffsets;
+    public SpecBlock() {
+        super(ChunkType.SPEC, 1);
+        this.mOffsets=new IntegerArray();
+        addChild(mOffsets);
+
+        getEntryCountBlock().setBlockLoad(this);
+    }
+    public TypeBlockArray getTypeBlockArray(){
+        SpecTypePair specTypePair=getSpecTypePair();
+        if(specTypePair!=null){
+            return specTypePair.getTypeBlockArray();
+        }
+        return null;
+    }
+    @Override
+    void onSetEntryCount(int count) {
+        mOffsets.setSize(count);
+    }
+    @Override
+    protected void onChunkRefreshed() {
+    }
+    @Override
+    public void onBlockLoaded(BlockReader reader, Block sender) throws IOException {
+        IntegerItem entryCount=getEntryCountBlock();
+        if(sender==entryCount){
+            mOffsets.setSize(entryCount.get());
+        }
+    }
+    @Override
+    public String toString(){
+        StringBuilder builder=new StringBuilder();
+        builder.append(super.toString());
+        TypeBlockArray typeBlockArray=getTypeBlockArray();
+        if(typeBlockArray!=null){
+            builder.append(", typesCount=");
+            builder.append(typeBlockArray.childesCount());
+        }
+        return builder.toString();
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/chunk/TableBlock.java b/src/main/java/com/reandroid/lib/arsc/chunk/TableBlock.java
new file mode 100644
index 0000000..2a9d317
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/chunk/TableBlock.java
@@ -0,0 +1,40 @@
+package com.reandroid.lib.arsc.chunk;
+
+import com.reandroid.lib.arsc.array.PackageArray;
+import com.reandroid.lib.arsc.item.IntegerItem;
+import com.reandroid.lib.arsc.pool.TableStringPool;
+
+public class TableBlock extends BaseChunk {
+    private final IntegerItem mPackageCount;
+    private final TableStringPool mTableStringPool;
+    private final PackageArray mPackageArray;
+    public TableBlock() {
+        super(ChunkType.TABLE, 2);
+        this.mPackageCount=new IntegerItem();
+        this.mTableStringPool=new TableStringPool(true);
+        this.mPackageArray=new PackageArray(mPackageCount);
+        addToHeader(mPackageCount);
+        addChild(mTableStringPool);
+        addChild(mPackageArray);
+    }
+    public TableStringPool getTableStringPool(){
+        return mTableStringPool;
+    }
+    public PackageArray getPackageArray(){
+        return mPackageArray;
+    }
+
+    @Override
+    protected void onChunkRefreshed() {
+
+    }
+    @Override
+    public String toString(){
+        StringBuilder builder=new StringBuilder();
+        builder.append(super.toString());
+        builder.append(", packages=");
+        int pkgCount=mPackageArray.childesCount();
+        builder.append(pkgCount);
+        return builder.toString();
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/chunk/TypeBlock.java b/src/main/java/com/reandroid/lib/arsc/chunk/TypeBlock.java
new file mode 100644
index 0000000..3b27b0d
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/chunk/TypeBlock.java
@@ -0,0 +1,48 @@
+package com.reandroid.lib.arsc.chunk;
+
+import com.reandroid.lib.arsc.array.EntryBlockArray;
+import com.reandroid.lib.arsc.item.IntegerArray;
+import com.reandroid.lib.arsc.item.IntegerItem;
+import com.reandroid.lib.arsc.value.ResConfig;
+
+public class TypeBlock extends BaseTypeBlock {
+    private final IntegerItem mEntriesStart;
+    private final ResConfig mResConfig;
+    private final IntegerArray mEntryOffsets;
+    private final EntryBlockArray mEntryArray;
+    public TypeBlock() {
+        super(ChunkType.TYPE, 2);
+        this.mEntriesStart=new IntegerItem();
+        this.mResConfig =new ResConfig();
+        this.mEntryOffsets=new IntegerArray();
+        this.mEntryArray=new EntryBlockArray(mEntryOffsets, getEntryCountBlock(), mEntriesStart);
+
+        addToHeader(mEntriesStart);
+        addToHeader(mResConfig);
+
+        addChild(mEntryOffsets);
+        addChild(mEntryArray);
+    }
+    public ResConfig getResConfig(){
+        return mResConfig;
+    }
+    public EntryBlockArray getEntryBlockArray(){
+        return mEntryArray;
+    }
+    @Override
+    void onSetEntryCount(int count) {
+        mEntryArray.setChildesCount(count);
+    }
+    @Override
+    protected void onChunkRefreshed() {
+
+    }
+    @Override
+    public String toString(){
+        StringBuilder builder=new StringBuilder();
+        builder.append(super.toString());
+        builder.append(", config=");
+        builder.append(getResConfig().toString());
+        return builder.toString();
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/chunk/xml/BaseXmlChunk.java b/src/main/java/com/reandroid/lib/arsc/chunk/xml/BaseXmlChunk.java
new file mode 100644
index 0000000..7015020
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/chunk/xml/BaseXmlChunk.java
@@ -0,0 +1,132 @@
+package com.reandroid.lib.arsc.chunk.xml;
+
+import com.reandroid.lib.arsc.chunk.ChunkType;
+import com.reandroid.lib.arsc.base.Block;
+import com.reandroid.lib.arsc.chunk.BaseChunk;
+import com.reandroid.lib.arsc.io.BlockReader;
+import com.reandroid.lib.arsc.item.IntegerItem;
+import com.reandroid.lib.arsc.item.ResXmlString;
+import com.reandroid.lib.arsc.pool.ResXmlStringPool;
+
+import java.io.IOException;
+
+
+public class BaseXmlChunk extends BaseChunk {
+
+    private final IntegerItem mLineNumber;
+    private final IntegerItem mCommentReference;
+    private final IntegerItem mNamespaceReference;
+    private final IntegerItem mStringReference;
+    BaseXmlChunk(ChunkType chunkType, int initialChildesCount) {
+        super(chunkType, initialChildesCount+2);
+        this.mLineNumber=new IntegerItem();
+        this.mCommentReference =new IntegerItem(-1);
+
+        this.mNamespaceReference=new IntegerItem(-1);
+        this.mStringReference=new IntegerItem(-1);
+
+        addToHeader(mLineNumber);
+        addToHeader(mCommentReference);
+
+        addChild(mNamespaceReference);
+        addChild(mStringReference);
+    }
+
+
+    public void setLineNumber(int val){
+        mLineNumber.set(val);
+    }
+    public int getLineNumber(){
+        return mLineNumber.get();
+    }
+    public void setCommentReference(int val){
+        mLineNumber.set(val);
+    }
+    public int getCommentReference(){
+        return mCommentReference.get();
+    }
+    public void setNamespaceReference(int val){
+        mNamespaceReference.set(val);
+    }
+    public int getNamespaceReference(){
+        return mNamespaceReference.get();
+    }
+    public void setStringReference(int val){
+        mStringReference.set(val);
+    }
+    public int getStringReference(){
+        return mStringReference.get();
+    }
+
+
+    public ResXmlStringPool getStringPool(){
+        Block parent=getParent();
+        while (parent!=null){
+            if(parent instanceof ResXmlBlock){
+                return ((ResXmlBlock)parent).getStringPool();
+            }
+            if(parent instanceof ResXmlElement){
+                return ((ResXmlElement)parent).getStringPool();
+            }
+            parent=parent.getParent();
+        }
+        return null;
+    }
+    public ResXmlString getResXmlString(int ref){
+        if(ref<0){
+            return null;
+        }
+        ResXmlStringPool stringPool=getStringPool();
+        if(stringPool!=null){
+            return stringPool.get(ref);
+        }
+        return null;
+    }
+    String getString(int ref){
+        ResXmlString xmlString=getResXmlString(ref);
+        if(xmlString!=null){
+            return xmlString.get();
+        }
+        return null;
+    }
+
+    public String getName(){
+        return getString(getStringReference());
+    }
+    public String getUri(){
+        return getString(getNamespaceReference());
+    }
+    public ResXmlElement getParentResXmlElement(){
+        Block parent=getParent();
+        while (parent!=null){
+            if(parent instanceof ResXmlElement){
+                return (ResXmlElement)parent;
+            }
+            parent=parent.getParent();
+        }
+        return null;
+    }
+    @Override
+    public void onReadBytes(BlockReader reader) throws IOException {
+        super.onReadBytes(reader);
+    }
+    @Override
+    protected void onChunkRefreshed() {
+
+    }
+    @Override
+    public String toString(){
+        ChunkType chunkType=getHeaderBlock().getChunkType();
+        if(chunkType==null){
+            return super.toString();
+        }
+        StringBuilder builder=new StringBuilder();
+        builder.append(chunkType.toString());
+        builder.append(": line=");
+        builder.append(getLineNumber());
+        builder.append(" {");
+        builder.append(getName());
+        builder.append("}");
+        return builder.toString();
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/chunk/xml/ResXmlAttribute.java b/src/main/java/com/reandroid/lib/arsc/chunk/xml/ResXmlAttribute.java
new file mode 100644
index 0000000..f68370e
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/chunk/xml/ResXmlAttribute.java
@@ -0,0 +1,192 @@
+package com.reandroid.lib.arsc.chunk.xml;
+
+import com.reandroid.lib.arsc.array.ResXmlIDArray;
+import com.reandroid.lib.arsc.base.Block;
+import com.reandroid.lib.arsc.container.FixedBlockContainer;
+import com.reandroid.lib.arsc.item.*;
+import com.reandroid.lib.arsc.pool.ResXmlStringPool;
+import com.reandroid.lib.arsc.value.ValueType;
+
+public class ResXmlAttribute extends FixedBlockContainer {
+    private final IntegerItem mNamespaceReference;
+    private final IntegerItem mNameReference;
+    private final IntegerItem mValueStringReference;
+    private final ShortItem mNameType;
+    private final ByteItem mReserved;
+    private final ByteItem mValueTypeByte;
+    private final IntegerItem mRawValue;
+    public ResXmlAttribute() {
+        super(7);
+        mNamespaceReference =new IntegerItem();
+        mNameReference =new IntegerItem();
+        mValueStringReference =new IntegerItem();
+        mNameType=new ShortItem();
+        mReserved =new ByteItem();
+        mValueTypeByte=new ByteItem();
+        mRawValue=new IntegerItem();
+        addChild(0, mNamespaceReference);
+        addChild(1, mNameReference);
+        addChild(2, mValueStringReference);
+        addChild(3, mNameType);
+        addChild(4, mReserved);
+        addChild(5, mValueTypeByte);
+        addChild(6, mRawValue);
+    }
+    public int getNamespaceReference(){
+        return mNamespaceReference.get();
+    }
+    public void setNamespaceReference(int ref){
+        mNamespaceReference.set(ref);
+    }
+    public int getNameReference(){
+        return mNameReference.get();
+    }
+    public void setNameReference(int ref){
+        mNameReference.set(ref);
+    }
+    public int getValueStringReference(){
+        return mValueStringReference.get();
+    }
+    public void setValueStringReference(int ref){
+        mValueStringReference.set(ref);
+    }
+    public short getNameType(){
+        return mNameType.get();
+    }
+    public void setNameType(short s){
+        mNameType.set(s);
+    }
+    public byte getValueTypeByte(){
+        return mValueTypeByte.get();
+    }
+    public void setValueTypeByte(byte b){
+        mValueTypeByte.set(b);
+    }
+    public int getRawValue(){
+        return mRawValue.get();
+    }
+    public void setRawValue(int val){
+        mRawValue.set(val);
+    }
+
+    public ValueType getValueType(){
+        return ValueType.valueOf(getValueTypeByte());
+    }
+    public String getFullName(){
+        String name=getName();
+        if(name==null){
+            return null;
+        }
+        String prefix=getNamePrefix();
+        if(prefix==null){
+            return name;
+        }
+        return prefix+":"+name;
+    }
+    public String getName(){
+        return getString(getNameReference());
+    }
+    public String getNamePrefix(){
+        ResXmlElement xmlElement=getParentResXmlElement();
+        if(xmlElement==null){
+            return null;
+        }
+        ResXmlStartNamespace startNamespace=xmlElement.getStartNamespaceByUriRef(getNamespaceReference());
+        if(startNamespace==null){
+            return null;
+        }
+        return startNamespace.getPrefix();
+    }
+    public String getValueString(){
+        return getString(getValueStringReference());
+    }
+    public int getNameResourceID(){
+        return getResourceId(getNameReference());
+    }
+    private int getResourceId(int ref){
+        if(ref<=0){
+            return 0;
+        }
+        ResXmlIDMap xmlIDMap=getResXmlIDMap();
+        if(xmlIDMap==null){
+            return 0;
+        }
+        ResXmlIDArray xmlIDArray = xmlIDMap.getResXmlIDArray();
+        ResXmlID xmlID = xmlIDArray.get(ref);
+        if(xmlID!=null){
+            return xmlID.get();
+        }
+        return 0;
+    }
+
+    private String getString(int ref){
+        if(ref<0){
+            return null;
+        }
+        ResXmlString xmlString=getResXmlString(ref);
+        if(xmlString!=null){
+            return xmlString.getHtml();
+        }
+        return null;
+    }
+    private ResXmlString getResXmlString(int ref){
+        ResXmlStringPool stringPool=getStringPool();
+        if(stringPool!=null){
+            return stringPool.get(ref);
+        }
+        return null;
+    }
+    private ResXmlStringPool getStringPool(){
+        ResXmlElement xmlElement=getParentResXmlElement();
+        if(xmlElement!=null){
+            return xmlElement.getStringPool();
+        }
+        return null;
+    }
+    private ResXmlIDMap getResXmlIDMap(){
+        ResXmlElement xmlElement=getParentResXmlElement();
+        if(xmlElement!=null){
+            return xmlElement.getResXmlIDMap();
+        }
+        return null;
+    }
+    private ResXmlElement getParentResXmlElement(){
+        Block parent=getParent();
+        while (parent!=null){
+            if(parent instanceof ResXmlElement){
+                return (ResXmlElement)parent;
+            }
+            parent=parent.getParent();
+        }
+        return null;
+    }
+
+    @Override
+    public String toString(){
+        String fullName=getFullName();
+        if(fullName!=null ){
+            int id=getNameResourceID();
+            if(id>0){
+                fullName=fullName+"(@"+String.format("0x%08x",id)+")";
+            }
+            String valStr=getValueString();
+            if(valStr!=null){
+                return getIndex()+" {"+fullName+"=\""+valStr+"\""+"}";
+            }
+            return getIndex()+" {"+fullName+"}"+"["+getValueType()+"]=\""+getRawValue()+"\"";
+        }
+        StringBuilder builder=new StringBuilder();
+        builder.append(getClass().getSimpleName());
+        builder.append(": ");
+        builder.append(getIndex());
+        builder.append("{NamespaceReference=").append(getNamespaceReference());
+        builder.append(", NameReference=").append(getNameReference());
+        builder.append(", ValueStringReference=").append(getValueStringReference());
+        builder.append(", NameType=").append(getNameType());
+        builder.append(", ReservedByte=").append(mReserved.get());
+        builder.append(", ValueTypeByte=").append(getValueTypeByte());
+        builder.append(", RawValue=").append(getRawValue());
+        builder.append("}");
+        return builder.toString();
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/chunk/xml/ResXmlBlock.java b/src/main/java/com/reandroid/lib/arsc/chunk/xml/ResXmlBlock.java
new file mode 100644
index 0000000..51a9bd3
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/chunk/xml/ResXmlBlock.java
@@ -0,0 +1,33 @@
+package com.reandroid.lib.arsc.chunk.xml;
+
+import com.reandroid.lib.arsc.chunk.ChunkType;
+import com.reandroid.lib.arsc.chunk.BaseChunk;
+import com.reandroid.lib.arsc.pool.ResXmlStringPool;
+
+public class ResXmlBlock extends BaseChunk {
+    private final ResXmlStringPool mResXmlStringPool;
+    private final ResXmlIDMap mResXmlIDMap;
+    private final ResXmlElement mResXmlElement;
+    public ResXmlBlock() {
+        super(ChunkType.XML,3);
+        this.mResXmlStringPool=new ResXmlStringPool(true);
+        this.mResXmlIDMap=new ResXmlIDMap();
+        this.mResXmlElement=new ResXmlElement();
+        addChild(mResXmlStringPool);
+        addChild(mResXmlIDMap);
+        addChild(mResXmlElement);
+    }
+    public ResXmlStringPool getStringPool(){
+        return mResXmlStringPool;
+    }
+    public ResXmlIDMap getResXmlIDMap(){
+        return mResXmlIDMap;
+    }
+    public ResXmlElement getResXmlElement(){
+        return mResXmlElement;
+    }
+    @Override
+    protected void onChunkRefreshed() {
+
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/chunk/xml/ResXmlElement.java b/src/main/java/com/reandroid/lib/arsc/chunk/xml/ResXmlElement.java
new file mode 100644
index 0000000..a1e8f95
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/chunk/xml/ResXmlElement.java
@@ -0,0 +1,290 @@
+package com.reandroid.lib.arsc.chunk.xml;
+
+import com.reandroid.lib.arsc.chunk.ChunkType;
+import com.reandroid.lib.arsc.base.Block;
+import com.reandroid.lib.arsc.container.BlockList;
+import com.reandroid.lib.arsc.container.FixedBlockContainer;
+import com.reandroid.lib.arsc.container.SingleBlockContainer;
+import com.reandroid.lib.arsc.header.HeaderBlock;
+import com.reandroid.lib.arsc.io.BlockReader;
+import com.reandroid.lib.arsc.pool.ResXmlStringPool;
+
+
+import java.io.IOException;
+import java.util.List;
+
+public class ResXmlElement extends FixedBlockContainer {
+    private final BlockList<ResXmlStartNamespace> mStartNamespaceList;
+    private final SingleBlockContainer<ResXmlStartElement> mStartElementContainer;
+    private final BlockList<ResXmlElement> mBody;
+    private final SingleBlockContainer<ResXmlText> mResXmlTextContainer;
+    private final SingleBlockContainer<ResXmlEndElement> mEndElementContainer;
+    private final BlockList<ResXmlEndNamespace> mEndNamespaceList;
+    private int mDepth;
+    public ResXmlElement() {
+        super(6);
+        this.mStartNamespaceList =new BlockList<>();
+        this.mStartElementContainer=new SingleBlockContainer<>();
+        this.mBody=new BlockList<>();
+        this.mResXmlTextContainer=new SingleBlockContainer<>();
+        this.mEndElementContainer=new SingleBlockContainer<>();
+        this.mEndNamespaceList =new BlockList<>();
+        addChild(0, mStartNamespaceList);
+        addChild(1, mStartElementContainer);
+        addChild(2, mBody);
+        addChild(3, mResXmlTextContainer);
+        addChild(4, mEndElementContainer);
+        addChild(5, mEndNamespaceList);
+    }
+    public ResXmlStringPool getStringPool(){
+        Block parent=getParent();
+        while (parent!=null){
+            if(parent instanceof ResXmlBlock){
+                return ((ResXmlBlock)parent).getStringPool();
+            }
+            if(parent instanceof ResXmlElement){
+                return ((ResXmlElement)parent).getStringPool();
+            }
+            parent=parent.getParent();
+        }
+        return null;
+    }
+    public ResXmlIDMap getResXmlIDMap(){
+        Block parent=getParent();
+        while (parent!=null){
+            if(parent instanceof ResXmlBlock){
+                return ((ResXmlBlock)parent).getResXmlIDMap();
+            }
+            parent=parent.getParent();
+        }
+        return null;
+    }
+
+    public int getDepth(){
+        return mDepth;
+    }
+    private void setDepth(int depth){
+        mDepth=depth;
+    }
+    public void addElement(ResXmlElement element){
+        mBody.add(element);
+    }
+    public int countElements(){
+        return mBody.size();
+    }
+    public List<ResXmlElement> listElements(){
+        return mBody.getChildes();
+    }
+    public ResXmlElement getParentResXmlElement(){
+        Block parent=getParent();
+        while (parent!=null){
+            if(parent instanceof ResXmlElement){
+                return (ResXmlElement)parent;
+            }
+            parent=parent.getParent();
+        }
+        return null;
+    }
+    public ResXmlStartNamespace getStartNamespaceByUriRef(int uriRef){
+        if(uriRef<0){
+            return null;
+        }
+        for(ResXmlStartNamespace ns:mStartNamespaceList.getChildes()){
+            if(uriRef==ns.getUriReference()){
+                return ns;
+            }
+        }
+        ResXmlElement xmlElement=getParentResXmlElement();
+        if(xmlElement!=null){
+            return xmlElement.getStartNamespaceByUriRef(uriRef);
+        }
+        return null;
+    }
+
+
+    public List<ResXmlStartNamespace> getStartNamespaceList(){
+        return mStartNamespaceList.getChildes();
+    }
+    public void addStartNamespace(ResXmlStartNamespace item){
+        mStartNamespaceList.add(item);
+    }
+
+    public List<ResXmlEndNamespace> getEndNamespaceList(){
+        return mEndNamespaceList.getChildes();
+    }
+    public void addEndNamespace(ResXmlEndNamespace item){
+        mEndNamespaceList.add(item);
+    }
+
+    public ResXmlStartElement getStartElement(){
+        return mStartElementContainer.getItem();
+    }
+    public void setStartElement(ResXmlStartElement item){
+        mStartElementContainer.setItem(item);
+    }
+
+    public ResXmlEndElement getEndElement(){
+        return mEndElementContainer.getItem();
+    }
+    public void setEndElement(ResXmlEndElement item){
+        mEndElementContainer.setItem(item);
+    }
+
+    public ResXmlText getResXmlText(){
+        return mResXmlTextContainer.getItem();
+    }
+    public void setResXmlText(ResXmlText xmlText){
+        mResXmlTextContainer.setItem(xmlText);
+    }
+
+    private boolean isBalanced(){
+        return isElementBalanced() && isNamespaceBalanced();
+    }
+    private boolean isNamespaceBalanced(){
+        return (mStartNamespaceList.size()==mEndNamespaceList.size());
+    }
+    private boolean isElementBalanced(){
+        return (hasStartElement() && hasEndElement());
+    }
+    private boolean hasStartElement(){
+        return mStartElementContainer.hasItem();
+    }
+    private boolean hasEndElement(){
+        return mEndElementContainer.hasItem();
+    }
+
+    private void linkStartEnd(){
+        linkStartEndElement();
+        linkStartEndNameSpaces();
+    }
+    private void linkStartEndElement(){
+        ResXmlStartElement start=getStartElement();
+        ResXmlEndElement end=getEndElement();
+        if(start==null || end==null){
+            return;
+        }
+        start.setResXmlEndElement(end);
+        end.setResXmlStartElement(start);
+    }
+    private void linkStartEndNameSpaces(){
+        if(!isNamespaceBalanced()){
+            return;
+        }
+        int max=mStartNamespaceList.size();
+        for(int i=0;i<max;i++){
+            ResXmlStartNamespace start=mStartNamespaceList.get(i);
+            ResXmlEndNamespace end=mEndNamespaceList.get(max-i-1);
+            start.setResXmlEndNamespace(end);
+            end.setResXmlStartNamespace(start);
+        }
+    }
+
+    @Override
+    public void onReadBytes(BlockReader reader) throws IOException {
+        if(isBalanced()){
+            return;
+        }
+        HeaderBlock headerBlock=reader.readHeaderBlock();
+        if(headerBlock==null){
+            return;
+        }
+        ChunkType chunkType=headerBlock.getChunkType();
+        if(chunkType==null){
+            unknownChunk(reader, headerBlock);
+            return;
+        }
+        if(chunkType==ChunkType.XML_START_ELEMENT){
+            onStartElement(reader);
+        }else if(chunkType==ChunkType.XML_END_ELEMENT){
+            onEndElement(reader);
+        }else if(chunkType==ChunkType.XML_START_NAMESPACE){
+            onStartNamespace(reader);
+        }else if(chunkType==ChunkType.XML_END_NAMESPACE){
+            onEndNamespace(reader);
+        }else if(chunkType==ChunkType.XML_CDATA){
+            onXmlText(reader);
+        }else{
+            unexpectedChunk(reader, headerBlock);
+        }
+        if(!isBalanced()){
+            if(!reader.isAvailable()){
+                unBalancedFinish(reader);
+            }else {
+                readBytes(reader);
+            }
+            return;
+        }
+        linkStartEnd();
+        onFinishedRead(reader, headerBlock);
+    }
+    private void onFinishedRead(BlockReader reader, HeaderBlock headerBlock) throws IOException{
+        int avail=reader.available();
+        if(avail>0 && getDepth()==0){
+            onFinishedUnexpected(reader);
+            return;
+        }
+        onFinishedSuccess(reader, headerBlock);
+    }
+    private void onFinishedSuccess(BlockReader reader, HeaderBlock headerBlock) throws IOException{
+
+    }
+    private void onFinishedUnexpected(BlockReader reader) throws IOException{
+        throw new IOException("Unexpected finish reading: "+reader.toString());
+    }
+    private void onStartElement(BlockReader reader) throws IOException{
+        if(hasStartElement()){
+            ResXmlElement childElement=new ResXmlElement();
+            addElement(childElement);
+            childElement.setDepth(getDepth()+1);
+            childElement.readBytes(reader);
+        }else{
+            ResXmlStartElement startElement=new ResXmlStartElement();
+            setStartElement(startElement);
+            startElement.readBytes(reader);
+        }
+    }
+    private void onEndElement(BlockReader reader) throws IOException{
+        if(hasEndElement()){
+            multipleEndElement(reader);
+            return;
+        }
+        ResXmlEndElement endElement=new ResXmlEndElement();
+        setEndElement(endElement);
+        endElement.readBytes(reader);
+    }
+    private void onStartNamespace(BlockReader reader) throws IOException{
+        ResXmlStartNamespace startNamespace=new ResXmlStartNamespace();
+        addStartNamespace(startNamespace);
+        startNamespace.readBytes(reader);
+    }
+    private void onEndNamespace(BlockReader reader) throws IOException{
+        ResXmlEndNamespace endNamespace=new ResXmlEndNamespace();
+        addEndNamespace(endNamespace);
+        endNamespace.readBytes(reader);
+    }
+    private void onXmlText(BlockReader reader) throws IOException{
+        ResXmlText xmlText=new ResXmlText();
+        setResXmlText(xmlText);
+        xmlText.readBytes(reader);
+    }
+
+    private void unknownChunk(BlockReader reader, HeaderBlock headerBlock) throws IOException{
+        throw new IOException("Unknown chunk: "+headerBlock.toString());
+    }
+    private void multipleEndElement(BlockReader reader) throws IOException{
+        throw new IOException("Multiple end element: "+reader.toString());
+    }
+    private void unexpectedChunk(BlockReader reader, HeaderBlock headerBlock) throws IOException{
+        throw new IOException("Unexpected chunk: "+headerBlock.toString());
+    }
+    private void unBalancedFinish(BlockReader reader) throws IOException{
+        if(!isNamespaceBalanced()){
+            throw new IOException("Unbalanced namespace: start="
+                    +mStartNamespaceList.size()+", end="+mEndNamespaceList.size());
+        }
+        if(!isElementBalanced()){
+            throw new IOException("Unbalanced element: hasStart="
+                    +hasStartElement()+", hasEnd="+hasEndElement());
+        }
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/chunk/xml/ResXmlEndElement.java b/src/main/java/com/reandroid/lib/arsc/chunk/xml/ResXmlEndElement.java
new file mode 100644
index 0000000..84198bf
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/chunk/xml/ResXmlEndElement.java
@@ -0,0 +1,18 @@
+package com.reandroid.lib.arsc.chunk.xml;
+
+import com.reandroid.lib.arsc.chunk.ChunkType;
+
+public class ResXmlEndElement extends BaseXmlChunk  {
+    private ResXmlStartElement mResXmlStartElement;
+    public ResXmlEndElement(){
+        super(ChunkType.XML_END_ELEMENT, 0);
+    }
+
+    public void setResXmlStartElement(ResXmlStartElement element){
+        mResXmlStartElement=element;
+    }
+    public ResXmlStartElement getResXmlStartElement(){
+        return mResXmlStartElement;
+    }
+
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/chunk/xml/ResXmlEndNamespace.java b/src/main/java/com/reandroid/lib/arsc/chunk/xml/ResXmlEndNamespace.java
new file mode 100644
index 0000000..f4fc3ab
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/chunk/xml/ResXmlEndNamespace.java
@@ -0,0 +1,53 @@
+package com.reandroid.lib.arsc.chunk.xml;
+
+import com.reandroid.lib.arsc.chunk.ChunkType;
+
+public class ResXmlEndNamespace extends BaseXmlChunk {
+    private ResXmlStartNamespace mResXmlStartNamespace;
+    public ResXmlEndNamespace() {
+        super(ChunkType.XML_END_NAMESPACE, 0);
+    }
+
+    public void setResXmlStartNamespace(ResXmlStartNamespace ns){
+        mResXmlStartNamespace=ns;
+    }
+    public ResXmlStartNamespace getResXmlStartNamespace(){
+        return mResXmlStartNamespace;
+    }
+
+
+    @Override
+    public String getUri(){
+        return getString(getUriReference());
+    }
+    public String getPrefix(){
+        return getString(getPrefixReference());
+    }
+    public int getUriReference(){
+        return getStringReference();
+    }
+    public void setUriReference(int ref){
+        setStringReference(ref);
+        if(mResXmlStartNamespace!=null){
+            mResXmlStartNamespace.setStringReference(ref);
+        }
+    }
+    public int getPrefixReference(){
+        return getNamespaceReference();
+    }
+    public void setPrefixReference(int ref){
+        setNamespaceReference(ref);
+        if(mResXmlStartNamespace!=null){
+            mResXmlStartNamespace.setNamespaceReference(ref);
+        }
+    }
+
+    @Override
+    public String toString(){
+        String uri=getUri();
+        if(uri==null){
+            return super.toString();
+        }
+        return "xmlns:"+getPrefix()+"=\""+getUri()+"\"";
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/chunk/xml/ResXmlIDMap.java b/src/main/java/com/reandroid/lib/arsc/chunk/xml/ResXmlIDMap.java
new file mode 100644
index 0000000..2469248
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/chunk/xml/ResXmlIDMap.java
@@ -0,0 +1,29 @@
+package com.reandroid.lib.arsc.chunk.xml;
+
+import com.reandroid.lib.arsc.chunk.ChunkType;
+import com.reandroid.lib.arsc.array.ResXmlIDArray;
+import com.reandroid.lib.arsc.chunk.BaseChunk;
+import com.reandroid.lib.arsc.io.BlockReader;
+
+import java.io.IOException;
+
+public class ResXmlIDMap extends BaseChunk {
+    private final ResXmlIDArray mResXmlIDArray;
+    public ResXmlIDMap() {
+        super(ChunkType.XML_RESOURCE_MAP, 1);
+        this.mResXmlIDArray=new ResXmlIDArray(getHeaderBlock());
+        addChild(mResXmlIDArray);
+    }
+    public ResXmlIDArray getResXmlIDArray(){
+        return mResXmlIDArray;
+    }
+
+    @Override
+    protected void onChunkRefreshed() {
+
+    }
+    @Override
+    public void onReadBytes(BlockReader reader) throws IOException {
+        super.onReadBytes(reader);
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/chunk/xml/ResXmlStartElement.java b/src/main/java/com/reandroid/lib/arsc/chunk/xml/ResXmlStartElement.java
new file mode 100644
index 0000000..acab3e1
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/chunk/xml/ResXmlStartElement.java
@@ -0,0 +1,97 @@
+package com.reandroid.lib.arsc.chunk.xml;
+
+import com.reandroid.lib.arsc.chunk.ChunkType;
+import com.reandroid.lib.arsc.array.ResXmlAttributeArray;
+import com.reandroid.lib.arsc.item.IntegerItem;
+import com.reandroid.lib.arsc.item.ShortItem;
+
+
+public class ResXmlStartElement extends BaseXmlChunk {
+    private final ShortItem mAttributeStart;
+    private final ShortItem mAttributeUnitSize;
+    private final ShortItem mAttributeCount;
+    private final ShortItem mIdAttribute;
+    private final IntegerItem mClassAttribute;
+    private final ResXmlAttributeArray mAttributeArray;
+    private ResXmlEndElement mResXmlEndElement;
+    public ResXmlStartElement() {
+        super(ChunkType.XML_START_ELEMENT, 6);
+        mAttributeStart=new ShortItem(ATTRIBUTES_DEFAULT_START);
+        mAttributeUnitSize =new ShortItem(ATTRIBUTES_UNIT_SIZE);
+        mAttributeCount=new ShortItem();
+        mIdAttribute=new ShortItem();
+        mClassAttribute=new IntegerItem();
+        mAttributeArray=new ResXmlAttributeArray(getHeaderBlock(), mAttributeStart, mAttributeCount);
+        addChild(mAttributeStart);
+        addChild(mAttributeUnitSize);
+        addChild(mAttributeCount);
+        addChild(mIdAttribute);
+        addChild(mClassAttribute);
+        addChild(mAttributeArray);
+    }
+    public String getTagName(){
+        String prefix=getPrefix();
+        String name=getName();
+        if(prefix==null){
+            return name;
+        }
+        return prefix+":"+name;
+    }
+    public String getPrefix(){
+        int uriRef=getNamespaceReference();
+        if(uriRef<0){
+            return null;
+        }
+        ResXmlElement parentElement=getParentResXmlElement();
+        ResXmlStartNamespace startNamespace=parentElement.getStartNamespaceByUriRef(uriRef);
+        if(startNamespace!=null){
+            return startNamespace.getPrefix();
+        }
+        return null;
+    }
+    public void setResXmlEndElement(ResXmlEndElement element){
+        mResXmlEndElement=element;
+    }
+    public ResXmlEndElement getResXmlEndElement(){
+        return mResXmlEndElement;
+    }
+
+    @Override
+    protected void onChunkRefreshed() {
+        refreshAttributeStart();
+        refreshAttributeCount();
+    }
+    private void refreshAttributeStart(){
+        int start=countUpTo(mAttributeArray);
+        start=start-getHeaderBlock().getHeaderSize();
+        mAttributeStart.set((short)start);
+    }
+    private void refreshAttributeCount(){
+        int count=mAttributeArray.childesCount();
+        mAttributeCount.set((short)count);
+    }
+
+    @Override
+    public String toString(){
+        String txt=getTagName();
+        if(txt==null){
+            return super.toString();
+        }
+        StringBuilder builder=new StringBuilder();
+        builder.append("TAG: line=").append(getLineNumber()).append(" <").append(txt).append(">");
+        ResXmlAttribute[] allAttr=mAttributeArray.getChildes();
+        if(allAttr!=null){
+            for(int i=0;i<allAttr.length;i++){
+                if(i>10){
+                    break;
+                }
+                builder.append(", ");
+                builder.append(allAttr[i].toString());
+            }
+        }
+        return builder.toString();
+    }
+
+    private static final short ATTRIBUTES_UNIT_SIZE=0x0014;
+    private static final short ATTRIBUTES_DEFAULT_START=0x0014;
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/chunk/xml/ResXmlStartNamespace.java b/src/main/java/com/reandroid/lib/arsc/chunk/xml/ResXmlStartNamespace.java
new file mode 100644
index 0000000..7201c05
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/chunk/xml/ResXmlStartNamespace.java
@@ -0,0 +1,51 @@
+package com.reandroid.lib.arsc.chunk.xml;
+
+import com.reandroid.lib.arsc.chunk.ChunkType;
+
+public class ResXmlStartNamespace extends BaseXmlChunk {
+    private ResXmlEndNamespace mResXmlEndNamespace;
+    public ResXmlStartNamespace() {
+        super(ChunkType.XML_START_NAMESPACE, 0);
+    }
+    public void setResXmlEndNamespace(ResXmlEndNamespace ns){
+        mResXmlEndNamespace=ns;
+    }
+
+    @Override
+    public String getUri(){
+        return getString(getUriReference());
+    }
+    public String getPrefix(){
+        return getString(getPrefixReference());
+    }
+    public int getUriReference(){
+        return getStringReference();
+    }
+    public void setUriReference(int ref){
+        setStringReference(ref);
+        if(mResXmlEndNamespace!=null){
+            mResXmlEndNamespace.setStringReference(ref);
+        }
+    }
+    public int getPrefixReference(){
+        return getNamespaceReference();
+    }
+    public void setPrefixReference(int ref){
+        setNamespaceReference(ref);
+        if(mResXmlEndNamespace!=null){
+            mResXmlEndNamespace.setNamespaceReference(ref);
+        }
+    }
+
+    public ResXmlEndNamespace getResXmlEndNamespace(){
+        return mResXmlEndNamespace;
+    }
+    @Override
+    public String toString(){
+        String uri=getUri();
+        if(uri==null){
+            return super.toString();
+        }
+        return "xmlns:"+getPrefix()+"=\""+getUri()+"\"";
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/chunk/xml/ResXmlText.java b/src/main/java/com/reandroid/lib/arsc/chunk/xml/ResXmlText.java
new file mode 100644
index 0000000..eda1c6e
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/chunk/xml/ResXmlText.java
@@ -0,0 +1,35 @@
+package com.reandroid.lib.arsc.chunk.xml;
+
+import com.reandroid.lib.arsc.chunk.ChunkType;
+import com.reandroid.lib.arsc.item.IntegerItem;
+import com.reandroid.lib.arsc.item.ResXmlString;
+
+public class ResXmlText extends BaseXmlChunk {
+    private final IntegerItem mReserved;
+    public ResXmlText() {
+        super(ChunkType.XML_CDATA, 1);
+        this.mReserved=new IntegerItem();
+        addChild(mReserved);
+    }
+    public String getText(){
+        ResXmlString xmlString=getResXmlString(getTextReference());
+        if(xmlString!=null){
+            return xmlString.getHtml();
+        }
+        return null;
+    }
+    public int getTextReference(){
+        return getNamespaceReference();
+    }
+    public void setTextReference(int ref){
+        setNamespaceReference(ref);
+    }
+    @Override
+    public String toString(){
+        String txt=getText();
+        if(txt!=null){
+            return "TEXT: line="+getLineNumber()+" >"+txt+"<";
+        }
+        return super.toString();
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/container/BlockList.java b/src/main/java/com/reandroid/lib/arsc/container/BlockList.java
new file mode 100644
index 0000000..bc9496f
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/container/BlockList.java
@@ -0,0 +1,85 @@
+package com.reandroid.lib.arsc.container;
+
+import com.reandroid.lib.arsc.base.Block;
+import com.reandroid.lib.arsc.base.BlockCounter;
+import com.reandroid.lib.arsc.io.BlockReader;
+
+import java.io.IOException;
+import java.io.OutputStream;
+import java.util.ArrayList;
+import java.util.List;
+
+public class BlockList<T extends Block> extends Block {
+    private final List<T> mItems;
+    public BlockList(){
+        super();
+        mItems=new ArrayList<>();
+    }
+    public void add(T item){
+        if(item==null){
+            return;
+        }
+        item.setIndex(mItems.size());
+        item.setParent(this);
+        mItems.add(item);
+    }
+    public T get(int i){
+        return mItems.get(i);
+    }
+    public int size(){
+        return mItems.size();
+    }
+    public List<T> getChildes(){
+        return mItems;
+    }
+
+    @Override
+    public byte[] getBytes() {
+        byte[] results=null;
+        for(T item:mItems){
+            if(item!=null){
+                results=addBytes(results, item.getBytes());
+            }
+        }
+        return results;
+    }
+    @Override
+    public int countBytes() {
+        int result=0;
+        for(T item:mItems){
+            result+=item.countBytes();
+        }
+        return result;
+    }
+
+    @Override
+    public void onCountUpTo(BlockCounter counter) {
+        if(counter.FOUND){
+            return;
+        }
+        if(counter.END==this){
+            counter.FOUND=true;
+            return;
+        }
+        for(T item:mItems){
+            if(counter.FOUND){
+                break;
+            }
+            item.onCountUpTo(counter);
+        }
+    }
+    @Override
+    protected int onWriteBytes(OutputStream stream) throws IOException {
+        int result=0;
+        for(T item:mItems){
+            result+=item.writeBytes(stream);
+        }
+        return result;
+    }
+    @Override
+    public void onReadBytes(BlockReader reader) throws IOException{
+        for(T item:mItems){
+            item.readBytes(reader);
+        }
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/container/ExpandableBlockContainer.java b/src/main/java/com/reandroid/lib/arsc/container/ExpandableBlockContainer.java
new file mode 100644
index 0000000..12d9ae2
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/container/ExpandableBlockContainer.java
@@ -0,0 +1,47 @@
+package com.reandroid.lib.arsc.container;
+
+import com.reandroid.lib.arsc.base.Block;
+import com.reandroid.lib.arsc.base.BlockContainer;
+
+public  class ExpandableBlockContainer extends BlockContainer<Block> {
+    private Block[] mChildes;
+    private int mCursor;
+    public ExpandableBlockContainer(int initialSize){
+        super();
+        this.mChildes=new Block[initialSize];
+    }
+    public final void addChild(Block block){
+        if(block==null){
+            return;
+        }
+        int index=mCursor;
+        ensureCount(index+1);
+        mChildes[index]=block;
+        block.setIndex(index);
+        block.setParent(this);
+        mCursor++;
+    }
+    private void ensureCount(int count){
+        if(count<= childesCount()){
+            return;
+        }
+        Block[] old=mChildes;
+        mChildes=new Block[count];
+        for(int i=0;i<old.length;i++){
+            mChildes[i]=old[i];
+        }
+    }
+    @Override
+    protected void onRefreshed() {
+
+    }
+
+    @Override
+    public final int childesCount() {
+        return mChildes.length;
+    }
+    @Override
+    public final Block[] getChildes() {
+        return mChildes;
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/container/FixedBlockContainer.java b/src/main/java/com/reandroid/lib/arsc/container/FixedBlockContainer.java
new file mode 100644
index 0000000..c121d63
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/container/FixedBlockContainer.java
@@ -0,0 +1,28 @@
+package com.reandroid.lib.arsc.container;
+
+import com.reandroid.lib.arsc.base.Block;
+import com.reandroid.lib.arsc.base.BlockContainer;
+
+public class FixedBlockContainer extends BlockContainer<Block> {
+    private final Block[] mChildes;
+    public FixedBlockContainer(int childesCount){
+        super();
+        mChildes=new Block[childesCount];
+    }
+    public void addChild(int index, Block block){
+        mChildes[index]=block;
+        block.setIndex(index);
+        block.setParent(this);
+    }
+    @Override
+    protected void onRefreshed(){
+    }
+    @Override
+    public int childesCount() {
+        return mChildes.length;
+    }
+    @Override
+    public Block[] getChildes() {
+        return mChildes;
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/container/PackageLastBlocks.java b/src/main/java/com/reandroid/lib/arsc/container/PackageLastBlocks.java
new file mode 100644
index 0000000..6164855
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/container/PackageLastBlocks.java
@@ -0,0 +1,58 @@
+package com.reandroid.lib.arsc.container;
+
+import com.reandroid.lib.arsc.chunk.ChunkType;
+import com.reandroid.lib.arsc.array.SpecTypePairArray;
+import com.reandroid.lib.arsc.chunk.LibraryBlock;
+import com.reandroid.lib.arsc.header.HeaderBlock;
+import com.reandroid.lib.arsc.io.BlockReader;
+
+import java.io.IOException;
+
+public class PackageLastBlocks extends FixedBlockContainer {
+
+    private final SpecTypePairArray mSpecTypePairArray;
+    private final LibraryBlock mLibraryBlock;
+    public PackageLastBlocks(SpecTypePairArray specTypePairArray, LibraryBlock libraryBlock){
+        super(2);
+        this.mSpecTypePairArray=specTypePairArray;
+        this.mLibraryBlock=libraryBlock;
+        addChild(0, mSpecTypePairArray);
+        addChild(1, mLibraryBlock);
+    }
+
+    @Override
+    public void onReadBytes(BlockReader reader) throws IOException{
+        boolean readOk=true;
+        while (readOk){
+            readOk=readNextBlock(reader);
+        }
+    }
+    private boolean readNextBlock(BlockReader reader) throws IOException {
+        HeaderBlock headerBlock = reader.readHeaderBlock();
+        if(headerBlock==null){
+            return false;
+        }
+        int pos=reader.getPosition();
+        ChunkType chunkType=headerBlock.getChunkType();
+        if(chunkType==ChunkType.SPEC){
+            readSpecBlock(reader);
+        }else if(chunkType==ChunkType.LIBRARY){
+            readLibraryBlock(reader);
+        }else {
+            readUnexpectedBlock(reader, headerBlock);
+        }
+        return pos!=reader.getPosition();
+    }
+    private void readSpecBlock(BlockReader reader) throws IOException{
+        SpecTypePair specTypePair=mSpecTypePairArray.createNext();
+        specTypePair.readBytes(reader);
+    }
+    private void readLibraryBlock(BlockReader reader) throws IOException{
+        LibraryBlock libraryBlock=new LibraryBlock();
+        libraryBlock.readBytes(reader);
+        mLibraryBlock.addLibraryInfo(libraryBlock);
+    }
+    private void readUnexpectedBlock(BlockReader reader, HeaderBlock headerBlock) throws IOException{
+        throw new IOException(reader.getActualPosition()+", Unexpected block: "+headerBlock.toString());
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/container/ResValueContainer.java b/src/main/java/com/reandroid/lib/arsc/container/ResValueContainer.java
new file mode 100644
index 0000000..c1c3490
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/container/ResValueContainer.java
@@ -0,0 +1,42 @@
+package com.reandroid.lib.arsc.container;
+
+import com.reandroid.lib.arsc.base.BlockContainer;
+import com.reandroid.lib.arsc.value.BaseResValue;
+
+public class ResValueContainer extends BlockContainer<BaseResValue> {
+    private final BaseResValue[] mChildes;
+    public ResValueContainer(){
+        super();
+        mChildes=new BaseResValue[1];
+    }
+    @Override
+    protected void onRefreshed(){
+    }
+    @Override
+    public int childesCount() {
+        return mChildes.length;
+    }
+    @Override
+    public BaseResValue[] getChildes() {
+        return mChildes;
+    }
+    public void setResValue(BaseResValue resValue){
+        BaseResValue old=getResValue();
+        if(old!=null){
+            old.setIndex(-1);
+            old.setParent(null);
+        }
+        mChildes[0]=resValue;
+        if(resValue==null){
+            return;
+        }
+        resValue.setIndex(0);
+        resValue.setParent(this);
+    }
+    public BaseResValue getResValue(){
+        if(mChildes.length==0){
+            return null;
+        }
+        return mChildes[0];
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/container/SingleBlockContainer.java b/src/main/java/com/reandroid/lib/arsc/container/SingleBlockContainer.java
new file mode 100644
index 0000000..6f7c876
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/container/SingleBlockContainer.java
@@ -0,0 +1,107 @@
+package com.reandroid.lib.arsc.container;
+
+import com.reandroid.lib.arsc.base.Block;
+import com.reandroid.lib.arsc.base.BlockContainer;
+import com.reandroid.lib.arsc.base.BlockCounter;
+import com.reandroid.lib.arsc.io.BlockReader;
+
+import java.io.IOException;
+import java.io.OutputStream;
+
+public class SingleBlockContainer<T extends Block> extends BlockContainer<T> {
+    private T mItem;
+    public SingleBlockContainer(){
+        super();
+    }
+    @Override
+    protected void refreshChildes(){
+        if(mItem!=null){
+            if(mItem instanceof BlockContainer){
+                ((BlockContainer)mItem).refresh();
+            }
+        }
+    }
+    @Override
+    protected void onRefreshed() {
+
+    }
+    public T getItem() {
+        return mItem;
+    }
+    public void setItem(T item) {
+        if(item==null){
+            if(mItem!=null){
+                mItem.setIndex(-1);
+                mItem.setParent(null);
+            }
+            mItem=null;
+            return;
+        }
+        this.mItem = item;
+        item.setIndex(getIndex());
+        item.setParent(this);
+    }
+    public boolean hasItem(){
+        return this.mItem!=null;
+    }
+    @Override
+    public byte[] getBytes() {
+        if(mItem!=null){
+            return mItem.getBytes();
+        }
+        return null;
+    }
+    @Override
+    public int countBytes() {
+        if(mItem!=null){
+            return mItem.countBytes();
+        }
+        return 0;
+    }
+
+    @Override
+    public void onCountUpTo(BlockCounter counter) {
+        if(counter.FOUND){
+            return;
+        }
+        if(counter.END==this){
+            counter.FOUND=true;
+            return;
+        }
+        if(mItem!=null){
+            mItem.onCountUpTo(counter);
+        }
+    }
+
+    @Override
+    public void onReadBytes(BlockReader reader) throws IOException{
+        if(mItem!=null){
+            mItem.readBytes(reader);
+        }
+    }
+    @Override
+    public int onWriteBytes(OutputStream stream) throws IOException {
+        if(mItem!=null){
+            return mItem.writeBytes(stream);
+        }
+        return 0;
+    }
+
+    @Override
+    public int childesCount() {
+        return hasItem()?0:1;
+    }
+
+    @Override
+    public T[] getChildes() {
+        return null;
+    }
+
+    @Override
+    public String toString(){
+        if(mItem!=null){
+            return mItem.toString();
+        }
+        return getClass().getSimpleName()+": EMPTY";
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/container/SpecTypePair.java b/src/main/java/com/reandroid/lib/arsc/container/SpecTypePair.java
new file mode 100644
index 0000000..c91c90e
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/container/SpecTypePair.java
@@ -0,0 +1,89 @@
+package com.reandroid.lib.arsc.container;
+
+import com.reandroid.lib.arsc.chunk.ChunkType;
+import com.reandroid.lib.arsc.array.TypeBlockArray;
+import com.reandroid.lib.arsc.base.Block;
+import com.reandroid.lib.arsc.base.BlockContainer;
+import com.reandroid.lib.arsc.chunk.PackageBlock;
+import com.reandroid.lib.arsc.chunk.SpecBlock;
+import com.reandroid.lib.arsc.header.HeaderBlock;
+import com.reandroid.lib.arsc.io.BlockReader;
+import com.reandroid.lib.arsc.value.ResConfig;
+
+import java.io.IOException;
+import java.util.List;
+
+public class SpecTypePair extends BlockContainer<Block> {
+    private final Block[] mChildes;
+    private final SpecBlock mSpecBlock;
+    private final TypeBlockArray mTypeBlockArray;
+    public SpecTypePair(SpecBlock specBlock, TypeBlockArray typeBlockArray){
+        this.mSpecBlock = specBlock;
+        this.mTypeBlockArray = typeBlockArray;
+        this.mChildes=new Block[]{specBlock, typeBlockArray};
+        mSpecBlock.setIndex(0);
+        mTypeBlockArray.setIndex(1);
+        mSpecBlock.setParent(this);
+        mTypeBlockArray.setParent(this);
+    }
+    public SpecTypePair(){
+        this(new SpecBlock(), new TypeBlockArray());
+    }
+    public List<ResConfig> listResConfig(){
+        return mTypeBlockArray.listResConfig();
+    }
+    public byte getTypeId(){
+        return mSpecBlock.getTypeId();
+    }
+    public void setTypeId(byte id){
+        mSpecBlock.setTypeId(id);
+        mTypeBlockArray.setTypeId(id);
+    }
+    public SpecBlock getSpecBlock(){
+        return mSpecBlock;
+    }
+    public TypeBlockArray getTypeBlockArray(){
+        return mTypeBlockArray;
+    }
+    public PackageBlock getPackageBlock(){
+        Block parent=getParent();
+        while (parent!=null){
+            if(parent instanceof PackageBlock){
+                return (PackageBlock)parent;
+            }
+            parent=parent.getParent();
+        }
+        return null;
+    }
+
+    @Override
+    protected void onRefreshed() {
+
+    }
+    @Override
+    public int childesCount() {
+        return mChildes.length;
+    }
+    @Override
+    public Block[] getChildes() {
+        return mChildes;
+    }
+
+    @Override
+    public void onReadBytes(BlockReader reader) throws IOException {
+        HeaderBlock headerBlock=reader.readHeaderBlock();
+        if(headerBlock==null){
+            return;
+        }
+        ChunkType chunkType=headerBlock.getChunkType();
+        if(chunkType!=ChunkType.SPEC){
+            readUnexpectedNonSpecBlock(reader, headerBlock);
+        }
+        mSpecBlock.readBytes(reader);
+        mTypeBlockArray.readBytes(reader);
+    }
+    private void readUnexpectedNonSpecBlock(BlockReader reader, HeaderBlock headerBlock) throws IOException{
+        throw new IOException("Unexpected block: "+headerBlock.toString()+", Should be: "+ChunkType.SPEC);
+    }
+
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/header/HeaderBlock.java b/src/main/java/com/reandroid/lib/arsc/header/HeaderBlock.java
new file mode 100644
index 0000000..6767017
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/header/HeaderBlock.java
@@ -0,0 +1,98 @@
+package com.reandroid.lib.arsc.header;
+
+import com.reandroid.lib.arsc.chunk.ChunkType;
+import com.reandroid.lib.arsc.base.Block;
+import com.reandroid.lib.arsc.container.ExpandableBlockContainer;
+import com.reandroid.lib.arsc.item.IntegerItem;
+import com.reandroid.lib.arsc.item.ShortItem;
+
+public class HeaderBlock extends ExpandableBlockContainer {
+    private final ShortItem mType;
+    private final ShortItem mHeaderSize;
+    private final IntegerItem mChunkSize;
+    public HeaderBlock(short type){
+        super(3);
+        this.mType=new ShortItem(type);
+        this.mHeaderSize=new ShortItem();
+        this.mChunkSize=new IntegerItem();
+        addChild(mType);
+        addChild(mHeaderSize);
+        addChild(mChunkSize);
+    }
+    public ChunkType getChunkType(){
+        return ChunkType.get(mType.get());
+    }
+    public short getType(){
+        return mType.get();
+    }
+    public void setType(ChunkType chunkType){
+        short type;
+        if(chunkType==null){
+            type=0;
+        }else {
+            type=chunkType.ID;
+        }
+        setType(type);
+    }
+    public void setType(short type){
+        mType.set(type);
+    }
+
+    public short getHeaderSize(){
+        return mHeaderSize.get();
+    }
+    public void setHeaderSize(short headerSize){
+        mHeaderSize.set(headerSize);
+    }
+    public int getChunkSize(){
+        return mChunkSize.get();
+    }
+    public void setChunkSize(int chunkSize){
+        mChunkSize.set(chunkSize);
+    }
+
+    public final void refreshHeader(){
+        refreshHeaderSize();
+        refreshChunkSize();
+    }
+    private void refreshHeaderSize(){
+        int count=countBytes();
+        setHeaderSize((short)count);
+    }
+    private void refreshChunkSize(){
+        Block parent=getParent();
+        if(parent==null){
+            return;
+        }
+        int count=parent.countBytes();
+        setChunkSize(count);
+    }
+
+    @Override
+    protected void onRefreshed() {
+        // Not required, the parent should call refreshHeader()
+    }
+    @Override
+    protected void refreshChildes(){
+        // Not required
+    }
+
+    @Override
+    public String toString(){
+        short t= getType();
+        ChunkType type= ChunkType.get(t);
+        StringBuilder builder=new StringBuilder();
+        if(type!=null){
+            builder.append(type.toString());
+        }else {
+            builder.append("Unknown type=");
+            builder.append(String.format("0x%02x", ((int)t)));
+        }
+        builder.append("{Header=");
+        builder.append(getHeaderSize());
+        builder.append(", Chunk=");
+        builder.append(getChunkSize());
+        builder.append("}");
+        return builder.toString();
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/io/BlockLoad.java b/src/main/java/com/reandroid/lib/arsc/io/BlockLoad.java
new file mode 100644
index 0000000..979c4a7
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/io/BlockLoad.java
@@ -0,0 +1,9 @@
+package com.reandroid.lib.arsc.io;
+
+import com.reandroid.lib.arsc.base.Block;
+
+import java.io.IOException;
+
+public interface BlockLoad {
+    public void onBlockLoaded(BlockReader reader, Block sender) throws IOException;
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/io/BlockReader.java b/src/main/java/com/reandroid/lib/arsc/io/BlockReader.java
new file mode 100644
index 0000000..45e32d3
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/io/BlockReader.java
@@ -0,0 +1,327 @@
+package com.reandroid.lib.arsc.io;
+
+import com.reandroid.lib.arsc.header.HeaderBlock;
+
+import java.io.*;
+
+
+public class BlockReader extends InputStream {
+    private final Object mLock=new Object();
+    private byte[] BUFFER;
+    private final int mStart;
+    private final int mLength;
+    private int mPosition;
+    private boolean mIsClosed;
+    private int mMark;
+    public BlockReader(byte[] buffer, int start, int length) {
+        this.BUFFER=buffer;
+        this.mStart=start;
+        this.mLength=length;
+        this.mPosition =0;
+    }
+    public BlockReader(byte[] buffer) {
+        this(buffer, 0, buffer.length);
+    }
+    public BlockReader(InputStream in) throws IOException {
+        this(loadBuffer(in));
+    }
+    public BlockReader(File file) throws IOException {
+        this(loadBuffer(file));
+    }
+    public HeaderBlock readHeaderBlock() throws IOException {
+        int pos=getPosition();
+        HeaderBlock headerBlock=new HeaderBlock((short)0);
+        try{
+            headerBlock.readBytes(this);
+        }catch (EOFException ex){
+            return null;
+        }
+        seek(pos);
+        return headerBlock;
+    }
+    public int searchNextIntPosition(int bytesOffset, int value){
+        if(mIsClosed || mPosition>=mLength){
+            return -1;
+        }
+        synchronized (mLock){
+            int actPos=mStart+mPosition+bytesOffset;
+            int max=available()/4;
+            for(int i=0;i<max;i++){
+                int pos=actPos+(i*4);
+                int valCur=toInt(BUFFER, pos);
+                if(valCur==value){
+                    return pos-mStart;
+                }
+            }
+            return -1;
+        }
+    }
+    private int toInt(byte[] bts, int offset){
+        return bts[offset] & 0xff |
+                (bts[offset+1] & 0xff) << 8 |
+                (bts[offset+2] & 0xff) << 16 |
+                (bts[offset+3] & 0xff) << 24;
+    }
+    public byte[] getBuffer(){
+        return BUFFER;
+    }
+    public BlockReader create(int start, int len){
+        int max=start+len;
+        if(len<0 || max> mLength){
+            len= mLength -start;
+        }
+        start=start+mStart;
+        return new BlockReader(BUFFER, start, len);
+    }
+    public boolean isAvailable(){
+        if(mIsClosed){
+            return false;
+        }
+        return available()>0;
+    }
+    public void offset(int off){
+        int pos=getPosition()+off;
+        seek(pos);
+    }
+    public void seek(int relPos){
+        if(relPos<0){
+            relPos=0;
+        }else if(relPos>length()){
+            relPos=length();
+        }
+        setPosition(relPos);
+    }
+    private void setPosition(int pos){
+        if(pos==mPosition){
+            return;
+        }
+        synchronized (mLock){
+            mPosition=pos;
+        }
+    }
+    public int length(){
+        return mLength;
+    }
+    public byte[] readBytes(int len) throws IOException {
+        byte[] result=new byte[len];
+        if(len==0){
+            return result;
+        }
+        int len2=read(result);
+        if(len2<0){
+            throw new EOFException("Finished reading: "+ mPosition);
+        }
+        if(len==len2){
+            return result;
+        }
+        byte[] result2=new byte[len2];
+        System.arraycopy(result, 0, result2, 0, len2);
+        return result2;
+    }
+    public int lengthUntilNextZero(int offset, int zeroCount){
+        if(mIsClosed || mPosition>=mLength){
+            return 0;
+        }
+        synchronized (mLock){
+            int actPos=mStart+mPosition-1;
+            int max=available();
+            int remZero=zeroCount;
+            int len=0;
+            for(int i=0;i<max;i++){
+                actPos++;
+                len++;
+                if(i<offset){
+                    continue;
+                }
+                if(BUFFER[actPos]!=0){
+                    remZero=zeroCount;
+                    continue;
+                }
+                remZero--;
+                if(remZero<=0){
+                    break;
+                }
+            }
+            return len;
+        }
+    }
+    public int lengthUntilLastZero(int offset){
+        if(mIsClosed || mPosition>=mLength){
+            return 0;
+        }
+        synchronized (mLock){
+            int actPos=mStart+mPosition-1;
+            int max=available();
+            int len=0;
+            boolean zeroFound=false;
+            for(int i=0;i<max;i++){
+                actPos++;
+                len++;
+                if(i<offset){
+                    continue;
+                }
+                byte b=BUFFER[actPos];
+                if(b==0){
+                    zeroFound=true;
+                }else if(zeroFound){
+                    len--;
+                    break;
+                }
+            }
+            return len;
+        }
+    }
+    public int readFully(byte[] bts) throws IOException{
+        return readFully(bts, 0, bts.length);
+    }
+    public int readFully(byte[] bts, int length) throws IOException{
+        if(length==0){
+            return 0;
+        }
+        return readFully(bts, 0, length);
+    }
+
+    public int skipByteValues(byte b) throws IOException {
+        if(mIsClosed){
+            throw new IOException("Stream is closed");
+        }
+        if(mPosition>=mLength){
+            throw new EOFException("Finished reading: "+mPosition);
+        }
+        synchronized (mLock){
+            int i=0;
+            while (mPosition<mLength){
+                if(BUFFER[mStart+mPosition]!=b){
+                    return i;
+                }
+                mPosition++;
+                i++;
+            }
+            return i;
+        }
+    }
+    public int readFully(byte[] bts, int start, int length) throws IOException {
+        if(length==0){
+            return 0;
+        }
+        if(mIsClosed){
+            throw new IOException("Stream is closed");
+        }
+        if(mPosition>=mLength){
+            throw new EOFException("Finished reading: "+mPosition);
+        }
+        int len=bts.length;
+        if(length<len){
+            len=length;
+        }
+        synchronized (mLock){
+            int actPos=mStart+mPosition;
+            int j;
+            for(j=0;j<len;j++){
+                bts[start+j]=BUFFER[actPos+j];
+                mPosition++;
+                if(mPosition>=mLength){
+                    j++;
+                    break;
+                }
+            }
+            return j;
+        }
+    }
+    public int getPosition(){
+        return mPosition;
+    }
+    public int getActualPosition(){
+        return mStart + mPosition;
+    }
+    public int getStartPosition(){
+        return mStart;
+    }
+    @Override
+    public int read() throws IOException {
+        if(mIsClosed){
+            throw new IOException("Stream is closed");
+        }
+        int i=mPosition;
+        if(i>=mLength){
+            throw new EOFException("Finished reading: "+i);
+        }
+        synchronized (mLock){
+            int actPos=mStart+i;
+            int val=BUFFER[actPos] & 0xff;
+            mPosition++;
+            return val;
+        }
+    }
+    @Override
+    public void mark(int pos){
+        mMark=pos;
+    }
+    @Override
+    public int available(){
+        return mLength-mPosition;
+    }
+    @Override
+    public void reset() throws IOException{
+        if(mIsClosed){
+            throw new IOException("Can not reset stream is closed");
+        }
+        mPosition=mMark;
+    }
+    @Override
+    public void close(){
+        mIsClosed=true;
+        BUFFER=null;
+        mMark=0;
+    }
+    @Override
+    public String toString(){
+        StringBuilder builder=new StringBuilder();
+        builder.append(getClass().getSimpleName());
+        builder.append(": ");
+        if(mIsClosed){
+            builder.append("Closed");
+        }else{
+            int av=available();
+            if(av==0){
+                builder.append("Finished: ");
+                builder.append(getPosition());
+            }else {
+                if(mStart>0){
+                    builder.append("START=");
+                    builder.append(mStart);
+                    builder.append(", ACTUAL=");
+                    builder.append(getActualPosition());
+                    builder.append(", ");
+                }
+                builder.append("POS=");
+                builder.append(getPosition());
+                builder.append(", available=");
+                builder.append(av);
+            }
+        }
+        return builder.toString();
+    }
+
+
+    private static byte[] loadBuffer(File file) throws IOException {
+        FileInputStream in=new FileInputStream(file);
+        return loadBuffer(in);
+    }
+    private static byte[] loadBuffer(InputStream in) throws IOException {
+        byte[] result=new byte[0];
+        byte[] buff=new byte[40960];
+        int len;
+        while((len=in.read(buff))>0){
+            result=add(result, buff, len);
+        }
+        in.close();
+        return result;
+    }
+    private static byte[] add(byte[] arr1, byte[] arr2, int len){
+        byte[] result=new byte[arr1.length + len];
+        System.arraycopy(arr1, 0, result, 0, arr1.length);
+        System.arraycopy(arr2, 0, result, arr1.length, len);
+        return result;
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/item/BlockItem.java b/src/main/java/com/reandroid/lib/arsc/item/BlockItem.java
new file mode 100644
index 0000000..d4199d7
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/item/BlockItem.java
@@ -0,0 +1,101 @@
+package com.reandroid.lib.arsc.item;
+
+import com.reandroid.lib.arsc.base.Block;
+import com.reandroid.lib.arsc.base.BlockCounter;
+import com.reandroid.lib.arsc.io.BlockReader;
+
+import java.io.IOException;
+import java.io.OutputStream;
+
+public abstract class BlockItem extends Block {
+
+    private byte[] mBytes;
+    public BlockItem(int bytesLength){
+        super();
+        mBytes=new byte[bytesLength];
+    }
+    public abstract void onBytesChanged();
+    protected byte[] getBytesInternal() {
+        return mBytes;
+    }
+    void setBytesInternal(byte[] bts){
+        if(bts==null){
+            bts=new byte[0];
+        }
+        if(bts==mBytes){
+            return;
+        }
+        mBytes=bts;
+        onBytesChanged();
+    }
+    final void ensureMinLength(int minLen){
+        int len=mBytes.length;
+        if(minLen<=len){
+            return;
+        }
+        byte[] bts=new byte[minLen];
+        System.arraycopy(bts, 0, mBytes, 0, mBytes.length);
+        mBytes=bts;
+    }
+    final void setBytesLength(int length){
+        setBytesLength(length, true);
+    }
+    final void setBytesLength(int length, boolean notify){
+        if(length<0){
+            length=0;
+        }
+        int old=mBytes.length;
+        if(length==old){
+            return;
+        }
+        byte[] bts=new byte[length];
+        if(length<old){
+            old=length;
+        }
+        System.arraycopy(mBytes, 0, bts, 0, old);
+        mBytes=bts;
+        if(notify){
+            onBytesChanged();
+        }
+    }
+    int getBytesLength(){
+        return mBytes.length;
+    }
+
+    @Override
+    public int countBytes() {
+        if(isNull()){
+            return 0;
+        }
+        return getBytesInternal().length;
+    }
+    @Override
+    public byte[] getBytes() {
+        if(isNull()){
+            return null;
+        }
+        return getBytesInternal();
+    }
+    @Override
+    public void onCountUpTo(BlockCounter counter) {
+        if(counter.FOUND){
+            return;
+        }
+        if(counter.END==this){
+            counter.FOUND=true;
+            return;
+        }
+        counter.addCount(countBytes());
+    }
+    @Override
+    public void onReadBytes(BlockReader reader) throws IOException{
+        byte[] bts=getBytesInternal();
+        reader.readFully(bts);
+        onBytesChanged();
+    }
+    @Override
+    protected int onWriteBytes(OutputStream stream) throws IOException {
+        stream.write(getBytesInternal());
+        return getBytesLength();
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/item/ByteArray.java b/src/main/java/com/reandroid/lib/arsc/item/ByteArray.java
new file mode 100644
index 0000000..6aca56c
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/item/ByteArray.java
@@ -0,0 +1,91 @@
+package com.reandroid.lib.arsc.item;
+
+import java.util.AbstractList;
+import java.util.List;
+
+public class ByteArray extends BlockItem {
+    public ByteArray(int bytesLength) {
+        super(bytesLength);
+    }
+    public ByteArray() {
+        this(0);
+    }
+    public final void clear(){
+        setSize(0);
+    }
+    public final void add(byte[] values){
+        if(values==null || values.length==0){
+            return;
+        }
+        int old=size();
+        int len=values.length;
+        setBytesLength(old+len, false);
+        byte[] bts = getBytesInternal();
+        for(int i=0;i<len;i++){
+            bts[old+i]=values[i];
+        }
+    }
+    public final void set(byte[] values){
+        super.setBytesInternal(values);
+    }
+    public final List<Byte> toList(){
+        List<Byte> results=new AbstractList<Byte>() {
+            @Override
+            public Byte get(int i) {
+                return ByteArray.this.get(i);
+            }
+
+            @Override
+            public int size() {
+                return ByteArray.this.size();
+            }
+        };
+        return results;
+    }
+    public final byte[] toArray(){
+        return getBytes();
+    }
+    public final void fill(byte value){
+        byte[] bts=getBytesInternal();
+        int max=bts.length;
+        for(int i=0;i<max;i++){
+            bts[i]=value;
+        }
+    }
+    public final void ensureArraySize(int s){
+        int sz=size();
+        if(sz>=s){
+            return;
+        }
+        setSize(s);
+    }
+    public final void setSize(int s){
+        if(s<0){
+            s=0;
+        }
+        setBytesLength(s);
+    }
+    public Byte get(int index){
+        if(index<0 || index>=size()){
+            return null;
+        }
+        return getBytesInternal()[index];
+    }
+    public final int size(){
+        return getBytesLength();
+    }
+    final void add(byte value){
+        int len=getBytesLength();
+        len=len + 1;
+        setBytesLength(len, false);
+        put(len, value);
+    }
+    public final void put(int index, byte value){
+        byte[] bts = getBytesInternal();
+        bts[index]=value;
+    }
+    @Override
+    public void onBytesChanged() {
+
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/item/ByteItem.java b/src/main/java/com/reandroid/lib/arsc/item/ByteItem.java
new file mode 100644
index 0000000..1e82146
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/item/ByteItem.java
@@ -0,0 +1,21 @@
+package com.reandroid.lib.arsc.item;
+
+
+public class ByteItem extends BlockItem {
+    public ByteItem() {
+        super(1);
+    }
+    public void set(byte b){
+        getBytesInternal()[0]=b;
+    }
+    public byte get(){
+        return getBytesInternal()[0];
+    }
+    @Override
+    public void onBytesChanged() {
+    }
+    @Override
+    public String toString(){
+        return String.valueOf(get());
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/item/IntegerArray.java b/src/main/java/com/reandroid/lib/arsc/item/IntegerArray.java
new file mode 100644
index 0000000..4f8ba78
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/item/IntegerArray.java
@@ -0,0 +1,112 @@
+package com.reandroid.lib.arsc.item;
+
+
+import java.util.AbstractList;
+import java.util.List;
+
+public class IntegerArray extends BlockItem {
+    public IntegerArray() {
+        super(0);
+    }
+    public final void clear(){
+        setSize(0);
+    }
+    public final void add(int[] values){
+        if(values==null || values.length==0){
+            return;
+        }
+        int old=size();
+        int s=old+values.length;
+        setSize(s);
+        for(int i=0;i<s;i++){
+            put(old+i, values[i]);
+        }
+    }
+    public final void set(int[] values){
+        if(values==null || values.length==0){
+            setSize(0);
+            return;
+        }
+        int s=values.length;
+        setSize(s);
+        for(int i=0;i<s;i++){
+            put(i, values[i]);
+        }
+    }
+    public final List<Integer> toList(){
+        List<Integer> results=new AbstractList<Integer>() {
+            @Override
+            public Integer get(int i) {
+                return IntegerArray.this.get(i);
+            }
+
+            @Override
+            public int size() {
+                return IntegerArray.this.size();
+            }
+        };
+        return results;
+    }
+    public final int[] toArray(){
+        int s=size();
+        int[] result=new int[s];
+        for(int i=0;i<s;i++){
+            result[i]=get(i);
+        }
+        return result;
+    }
+    public final void fill(int value){
+        int max=size();
+        for(int i=0;i<max;i++){
+            put(i, value);
+        }
+    }
+    public final void ensureArraySize(int s){
+        int sz=size();
+        if(sz>=s){
+            return;
+        }
+        setSize(s);
+    }
+    public final void setSize(int s){
+        if(s<0){
+            s=0;
+        }
+        int len=s*4;
+        setBytesLength(len);
+    }
+    public Integer get(int index){
+        if(index<0 || index>=size()){
+            return null;
+        }
+        int i=index*4;
+        byte[] bts = getBytesInternal();
+        return bts[i] & 0xff |
+                (bts[i+1] & 0xff) << 8 |
+                (bts[i+2] & 0xff) << 16 |
+                (bts[i+3] & 0xff) << 24;
+    }
+    public final int size(){
+        return getBytesLength()/4;
+    }
+    final void add(int value){
+        int len=getBytesLength();
+        len=len + 4;
+        setBytesLength(len, false);
+        int pos=size()-1;
+        put(pos, value);
+    }
+    public final void put(int index, int value){
+        int i=index*4;
+        byte[] bts = getBytesInternal();
+        bts[i+3]= (byte) (value >>> 24 & 0xff);
+        bts[i+2]= (byte) (value >>> 16 & 0xff);
+        bts[i+1]= (byte) (value >>> 8 & 0xff);
+        bts[i]= (byte) (value & 0xff);
+    }
+
+    @Override
+    public void onBytesChanged() {
+
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/item/IntegerItem.java b/src/main/java/com/reandroid/lib/arsc/item/IntegerItem.java
new file mode 100644
index 0000000..d547ed6
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/item/IntegerItem.java
@@ -0,0 +1,46 @@
+package com.reandroid.lib.arsc.item;
+
+
+public class IntegerItem extends BlockItem {
+    private int mCache;
+    public IntegerItem(){
+        super(4);
+    }
+    public IntegerItem(int val){
+        this();
+        set(val);
+    }
+    public void set(int val){
+        if(val==mCache){
+            return;
+        }
+        mCache=val;
+        byte[] bts = getBytesInternal();
+        bts[3]= (byte) (val >>> 24 & 0xff);
+        bts[2]= (byte) (val >>> 16 & 0xff);
+        bts[1]= (byte) (val >>> 8 & 0xff);
+        bts[0]= (byte) (val & 0xff);
+    }
+    public int get(){
+        return mCache;
+    }
+
+
+
+    @Override
+    public void onBytesChanged() {
+        mCache=readIntBytes();
+    }
+    private int readIntBytes(){
+        byte[] bts = getBytesInternal();
+        return bts[0] & 0xff |
+                (bts[1] & 0xff) << 8 |
+                (bts[2] & 0xff) << 16 |
+                (bts[3] & 0xff) << 24;
+    }
+    @Override
+    public String toString(){
+        return String.valueOf(get());
+    }
+
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/item/PackageName.java b/src/main/java/com/reandroid/lib/arsc/item/PackageName.java
new file mode 100644
index 0000000..882f0b8
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/item/PackageName.java
@@ -0,0 +1,70 @@
+package com.reandroid.lib.arsc.item;
+
+import com.reandroid.lib.arsc.io.BlockReader;
+
+import java.nio.charset.StandardCharsets;
+
+public class PackageName extends StringItem {
+    public PackageName() {
+        super(true);
+        setBytesLength(BYTES_LENGTH);
+    }
+    @Override
+    byte[] encodeString(String str){
+        if(str==null){
+            return new byte[BYTES_LENGTH];
+        }
+        byte[] bts=getUtf16Bytes(str);
+        byte[] results=new byte[BYTES_LENGTH];
+        int len=bts.length;
+        if(len>BYTES_LENGTH){
+            len=BYTES_LENGTH;
+        }
+        System.arraycopy(bts, 0, results, 0, len);
+        return results;
+    }
+    @Override
+    String decodeString(){
+        return decodeUtf16Bytes(getBytesInternal());
+    }
+    @Override
+    StyleItem getStyle(){
+        return null;
+    }
+    @Override
+    int calculateReadLength(BlockReader reader){
+        return BYTES_LENGTH;
+    }
+    private static String decodeUtf16Bytes(byte[] bts){
+        if(isNullBytes(bts)){
+            return null;
+        }
+        int len=getEndNullPosition(bts);
+        return new String(bts,0, len, StandardCharsets.UTF_16LE);
+    }
+    private static int getEndNullPosition(byte[] bts){
+        int max=bts.length;
+        int result=0;
+        boolean found=false;
+        for(int i=1; i<max;i++){
+            byte b0=bts[i-1];
+            byte b1=bts[i];
+            if(b0==0 && b1==0){
+                if(!found){
+                    result=i;
+                    found=true;
+                }else if(result<i-1){
+                    return result;
+                }
+            }else {
+                found=false;
+            }
+        }
+        if(!found){
+            return max;
+        }
+        return result;
+    }
+    private static final int BYTES_LENGTH=256;
+
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/item/ResXmlID.java b/src/main/java/com/reandroid/lib/arsc/item/ResXmlID.java
new file mode 100644
index 0000000..70a2673
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/item/ResXmlID.java
@@ -0,0 +1,14 @@
+package com.reandroid.lib.arsc.item;
+
+public class ResXmlID extends IntegerItem {
+    public ResXmlID(){
+        super();
+    }
+    public ResXmlID(int resId){
+        super(resId);
+    }
+    @Override
+    public String toString(){
+        return getIndex()+": "+String.format("0x%08x", get());
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/item/ResXmlString.java b/src/main/java/com/reandroid/lib/arsc/item/ResXmlString.java
new file mode 100644
index 0000000..219cf6e
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/item/ResXmlString.java
@@ -0,0 +1,7 @@
+package com.reandroid.lib.arsc.item;
+
+public class ResXmlString extends StringItem {
+    public ResXmlString(boolean utf8) {
+        super(utf8);
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/item/ShortItem.java b/src/main/java/com/reandroid/lib/arsc/item/ShortItem.java
new file mode 100644
index 0000000..f9a08ee
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/item/ShortItem.java
@@ -0,0 +1,37 @@
+package com.reandroid.lib.arsc.item;
+
+public class ShortItem extends BlockItem {
+    private short mCache;
+
+    public ShortItem(){
+        super(2);
+    }
+    public ShortItem(short val){
+        this();
+        set(val);
+    }
+    public void set(short val){
+        if(val==mCache){
+            return;
+        }
+        mCache=val;
+        byte[] bts = getBytesInternal();
+        bts[1]= (byte) (val >>> 8 & 0xff);
+        bts[0]= (byte) (val & 0xff);
+    }
+    public short get(){
+        return mCache;
+    }
+    @Override
+    public void onBytesChanged() {
+        mCache=readShortBytes();
+    }
+    private short readShortBytes(){
+        byte[] bts = getBytesInternal();
+        return (short) (bts[0] & 0xff | (bts[1] & 0xff) << 8);
+    }
+    @Override
+    public String toString(){
+        return String.valueOf(get());
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/item/SpecString.java b/src/main/java/com/reandroid/lib/arsc/item/SpecString.java
new file mode 100644
index 0000000..a3519b2
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/item/SpecString.java
@@ -0,0 +1,11 @@
+package com.reandroid.lib.arsc.item;
+
+public class SpecString extends StringItem {
+    public SpecString(boolean utf8) {
+        super(utf8);
+    }
+    @Override
+    StyleItem getStyle(){
+        return null;
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/item/StringItem.java b/src/main/java/com/reandroid/lib/arsc/item/StringItem.java
new file mode 100644
index 0000000..f60e677
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/item/StringItem.java
@@ -0,0 +1,289 @@
+package com.reandroid.lib.arsc.item;
+
+import com.reandroid.lib.arsc.base.Block;
+import com.reandroid.lib.arsc.io.BlockReader;
+import com.reandroid.lib.arsc.pool.BaseStringPool;
+
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.CharBuffer;
+import java.nio.charset.CharacterCodingException;
+import java.nio.charset.CharsetDecoder;
+import java.nio.charset.StandardCharsets;
+
+public class StringItem extends BlockItem {
+    private String mCache;
+    private boolean mUtf8;
+    public StringItem(boolean utf8) {
+        super(0);
+        this.mUtf8=utf8;
+    }
+    public String getHtml(){
+        String str=get();
+        if(str==null){
+            return null;
+        }
+        StyleItem styleItem=getStyle();
+        if(styleItem==null){
+            return str;
+        }
+        return styleItem.applyHtml(str);
+    }
+    public String get(){
+        return mCache;
+    }
+    public void set(String str){
+        String old=get();
+        if(str==null){
+            if(old==null){
+                return;
+            }
+        }else if(str.equals(old)){
+            return;
+        }
+        byte[] bts=encodeString(str);
+        setBytesInternal(bts);
+    }
+
+    public boolean isUtf8(){
+        return mUtf8;
+    }
+    public void setUtf8(boolean utf8){
+        if(utf8==mUtf8){
+            return;
+        }
+        mUtf8=utf8;
+        onBytesChanged();
+    }
+
+    @Override
+    public void onBytesChanged() {
+        mCache=decodeString();
+    }
+
+    @Override
+    public void onReadBytes(BlockReader reader) throws IOException {
+        int len=calculateReadLength(reader);
+        setBytesLength(len, false);
+        byte[] bts=getBytesInternal();
+        reader.readFully(bts);
+        onBytesChanged();
+    }
+    int calculateReadLength(BlockReader reader) throws IOException {
+        byte[] bts=new byte[4];
+        reader.readFully(bts);
+        reader.offset(-4);
+        int[] len;
+        if(isUtf8()){
+            len=decodeUtf8StringByteLength(bts);
+        }else {
+            len=decodeUtf16StringByteLength(bts);
+        }
+        int add=isUtf8()?1:2;
+        return len[0]+len[1]+add;
+    }
+    String decodeString(){
+        return decodeString(getBytesInternal(), mUtf8);
+    }
+    byte[] encodeString(String str){
+        if(mUtf8){
+            return encodeUtf8ToBytes(str);
+        }else {
+            return encodeUtf16ToBytes(str);
+        }
+    }
+    private String decodeString(byte[] allStringBytes, boolean isUtf8) {
+        if(isNullBytes(allStringBytes)){
+            if(allStringBytes==null||allStringBytes.length==0){
+                return null;
+            }
+            return "";
+        }
+        int[] offLen;
+        if(isUtf8){
+            offLen=decodeUtf8StringByteLength(allStringBytes);
+        }else {
+            offLen=decodeUtf16StringByteLength(allStringBytes);
+        }
+        CharsetDecoder charsetDecoder;
+        if(isUtf8){
+            charsetDecoder=UTF8_DECODER;
+        }else {
+            charsetDecoder=UTF16LE_DECODER;
+        }
+        try {
+            ByteBuffer buf=ByteBuffer.wrap(allStringBytes, offLen[0], offLen[1]);
+            CharBuffer charBuffer=charsetDecoder.decode(buf);
+            return charBuffer.toString();
+        } catch (CharacterCodingException ex) {
+            return new String(allStringBytes, offLen[0], offLen[1]);
+        }
+    }
+
+
+    StyleItem getStyle(){
+        BaseStringPool stringPool=getStringPool();
+        if(stringPool==null){
+            return null;
+        }
+        int index=getIndex();
+        return stringPool.getStyle(index);
+    }
+    private BaseStringPool getStringPool(){
+        Block parent=getParent();
+        while (parent!=null){
+            if(parent instanceof BaseStringPool){
+                return (BaseStringPool)parent;
+            }
+            parent=parent.getParent();
+        }
+        return null;
+    }
+    @Override
+    public String toString(){
+        String str=get();
+        if(str==null){
+            return "NULL";
+        }
+        return str;
+    }
+
+    private static int[] decodeUtf8StringByteLength(byte[] lengthBytes) {
+        int offset=0;
+        int val = lengthBytes[offset];
+        int length;
+        if ((val & 0x80) != 0) {
+            offset += 2;
+        } else {
+            offset += 1;
+        }
+        val = lengthBytes[offset];
+        offset += 1;
+        if ((val & 0x80) != 0) {
+            int low = (lengthBytes[offset] & 0xFF);
+            length = val & 0x7F;
+            length = length << 8;
+            length = length + low;
+            offset += 1;
+        } else {
+            length = val;
+        }
+        return new int[] { offset, length};
+    }
+    private static int[] decodeUtf16StringByteLength(byte[] lengthBytes) {
+        int val = ((lengthBytes[1] & 0xFF) << 8 | lengthBytes[0] & 0xFF);
+        if ((val & 0x8000) != 0) {
+            int high = (lengthBytes[3] & 0xFF) << 8;
+            int low = (lengthBytes[2] & 0xFF);
+            int len_value =  ((val & 0x7FFF) << 16) + (high + low);
+            return new int[] {4, len_value * 2};
+
+        }
+        return new int[] {2, val * 2};
+    }
+    static boolean isNullBytes(byte[] bts){
+        if(bts==null){
+            return true;
+        }
+        int max=bts.length;
+        if(max<2){
+            return true;
+        }
+        for(int i=2; i<max;i++){
+            if(bts[i] != 0){
+                return false;
+            }
+        }
+        return true;
+    }
+
+
+    private static byte[] encodeUtf8ToBytes(String str){
+        byte[] bts=new byte[0];
+        byte[] lenBytes=new byte[2];
+        if(str!=null){
+            bts=str.getBytes(StandardCharsets.UTF_8);
+            int strLen=bts.length;
+            if((strLen & 0xff80)!=0){
+                lenBytes=new byte[4];
+                int l2=strLen&0xff;
+                int l1=(strLen-l2)>>8;
+                lenBytes[3]=(byte) (l2);
+                lenBytes[2]=(byte) (l1|0x80);
+                strLen=str.length();
+                l2=strLen&0xff;
+                l1=(strLen-l2)>>8;
+                lenBytes[1]=(byte) (l2);
+                lenBytes[0]=(byte) (l1|0x80);
+            }else{
+                lenBytes=new ShortItem((short) strLen).getBytesInternal();
+                lenBytes[1]=lenBytes[0];
+                lenBytes[0]=(byte)str.length();
+            }
+        }else {
+            bts=new byte[0];
+        }
+        return addBytes(lenBytes, bts, new byte[1]);
+    }
+    private static byte[] encodeUtf16ToBytes(String str){
+        if(str==null){
+            return null;
+        }
+        byte[] lenBytes;
+        byte[] bts=getUtf16Bytes(str);
+        int strLen=bts.length;
+        strLen=strLen/2;
+        if((strLen & 0xffff8000)!=0){
+            lenBytes=new byte[4];
+            int low=strLen&0xff;
+            int high=(strLen-low)&0xff00;
+            int rem=strLen-low-high;
+            lenBytes[3]=(byte) (high>>8);
+            lenBytes[2]=(byte) (low);
+            low=rem&0xff;
+            high=(rem&0xff00)>>8;
+            lenBytes[1]=(byte) (high|0x80);
+            lenBytes[0]=(byte) (low);
+        }else{
+            lenBytes=new ShortItem((short) strLen).getBytesInternal();
+        }
+        return addBytes(lenBytes, bts, new byte[2]);
+    }
+    static byte[] getUtf16Bytes(String str){
+        return str.getBytes(StandardCharsets.UTF_16LE);
+    }
+
+    private static byte[] addBytes(byte[] bts1, byte[] bts2, byte[] bts3){
+        if(bts1==null && bts2==null && bts3==null){
+            return null;
+        }
+        int len=0;
+        if(bts1!=null){
+            len=bts1.length;
+        }
+        if(bts2!=null){
+            len+=bts2.length;
+        }
+        if(bts3!=null){
+            len+=bts3.length;
+        }
+        byte[] result=new byte[len];
+        int start=0;
+        if(bts1!=null){
+            start=bts1.length;
+            System.arraycopy(bts1, 0, result, 0, start);
+        }
+        if(bts2!=null){
+            System.arraycopy(bts2, 0, result, start, bts2.length);
+            start+=bts2.length;
+        }
+        if(bts3!=null){
+            System.arraycopy(bts3, 0, result, start, bts3.length);
+        }
+        return result;
+    }
+
+    private final CharsetDecoder UTF16LE_DECODER = StandardCharsets.UTF_16LE.newDecoder();
+    private final CharsetDecoder UTF8_DECODER = StandardCharsets.UTF_8.newDecoder();
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/item/StyleItem.java b/src/main/java/com/reandroid/lib/arsc/item/StyleItem.java
new file mode 100644
index 0000000..f166118
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/item/StyleItem.java
@@ -0,0 +1,226 @@
+package com.reandroid.lib.arsc.item;
+
+import com.reandroid.lib.arsc.base.Block;
+import com.reandroid.lib.arsc.io.BlockReader;
+import com.reandroid.lib.arsc.model.StyleSpanInfo;
+import com.reandroid.lib.arsc.pool.BaseStringPool;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+public class StyleItem extends IntegerArray{
+    private List<int[]> mStyleList;
+    public StyleItem() {
+        super();
+        mStyleList=createStyleList();
+    }
+    private void setEndValue(int negOne){
+        super.put(size()-1, negOne);
+    }
+    final Integer getEndValue(){
+        return super.get(size()-1);
+    }
+    final Integer getStringRef(int index){
+        int i=index*STYLE_PIECE_COUNT+STRING_REF;
+        return super.get(i);
+    }
+    final void setStringRef(int index, int val){
+        int i=index*STYLE_PIECE_COUNT+STRING_REF;
+        super.put(i, val);
+    }
+    final Integer getFirstChar(int index){
+        int i=index*STYLE_PIECE_COUNT+CHAR_FIRST;
+        return super.get(i);
+    }
+    final void setFirstChar(int index, int val){
+        int i=index*STYLE_PIECE_COUNT+CHAR_FIRST;
+        super.put(i, val);
+    }
+    final Integer getLastChar(int index){
+        int i=index*STYLE_PIECE_COUNT+CHAR_LAST;
+        return super.get(i);
+    }
+    final void setLastChar(int index, int val){
+        int i=index*STYLE_PIECE_COUNT+CHAR_LAST;
+        super.put(i, val);
+    }
+    final void setStylePiece(int index, int refString, int firstChar, int lastChar){
+        int i=index*STYLE_PIECE_COUNT;
+        super.put(i+STRING_REF, refString);
+        super.put(i+CHAR_FIRST, firstChar);
+        super.put(i+CHAR_LAST, lastChar);
+    }
+    final int[] getStylePiece(int index){
+        if(index<0||index>= getStylePieceCount()){
+            return null;
+        }
+        int[] result=new int[STYLE_PIECE_COUNT];
+        int i=index*STYLE_PIECE_COUNT;
+        result[STRING_REF]=super.get(i);
+        result[CHAR_FIRST]=super.get(i+CHAR_FIRST);
+        result[CHAR_LAST]=super.get(i+CHAR_LAST);
+        return result;
+    }
+    final void setStylePiece(int index, int[] three){
+        if(three==null || three.length<STYLE_PIECE_COUNT){
+            return;
+        }
+        int i=index*STYLE_PIECE_COUNT;
+        super.put(i+STRING_REF, three[STRING_REF]);
+        super.put(i+CHAR_FIRST, three[CHAR_FIRST]);
+        super.put(i+CHAR_LAST, three[CHAR_LAST]);
+    }
+    final void ensureStylePieceCount(int count){
+        if(count<0){
+            count=0;
+        }
+        if(count<getStylePieceCount()){
+            setStylePieceCount(count);
+        }
+    }
+    final int getStylePieceCount(){
+        int sz=size()-1;
+        if(sz<0){
+            sz=0;
+        }
+        return sz/STYLE_PIECE_COUNT;
+    }
+    final void setStylePieceCount(int count){
+        if(count<0){
+            count=0;
+        }
+        int cur= getStylePieceCount();
+        if(count==cur){
+            return;
+        }
+        int max=count*STYLE_PIECE_COUNT+1;
+        if(size()==0 || count==0){
+            super.setSize(max);
+            setEndValue(END_VALUE);
+            return;
+        }
+        List<int[]> copy=new ArrayList<>(mStyleList);
+        Integer end= getEndValue();
+        if(end==null){
+            end=END_VALUE;
+        }
+        super.setSize(max);
+        max=count;
+        int copyMax=copy.size();
+        if(copyMax>max){
+            copyMax=max;
+        }
+        for(int i=0;i<copyMax;i++){
+            int[] val=copy.get(i);
+            setStylePiece(i, val);
+        }
+        setEndValue(end);
+    }
+    final List<int[]> getStyleList(){
+        return mStyleList;
+    }
+    private List<int[]> createStyleList(){
+        List<int[]> results=new ArrayList<>();
+        int max=getStylePieceCount();
+        for(int i=0;i<max;i++){
+            results.add(getStylePiece(i));
+        }
+        return results;
+    }
+    final List<StyleSpanInfo> getSpanInfo(){
+        BaseStringPool stringPool= getStringPool();
+        if(stringPool==null){
+            return null;
+        }
+        List<int[]> allPiece=getStyleList();
+        List<StyleSpanInfo> results=new ArrayList<>();
+        for(int[] piece:allPiece){
+            StringItem stringItem=stringPool.get(piece[STRING_REF]);
+            if(stringItem==null){
+                return null;
+            }
+            StyleSpanInfo info=new StyleSpanInfo(stringItem.get(), piece[CHAR_FIRST], piece[CHAR_LAST]);
+            results.add(info);
+        }
+        if(results.size()==0){
+            return null;
+        }
+        return results;
+    }
+    private BaseStringPool getStringPool(){
+        Block parent=getParent();
+        while (parent!=null){
+            if(parent instanceof BaseStringPool){
+                return (BaseStringPool)parent;
+            }
+            parent=parent.getParent();
+        }
+        return null;
+    }
+
+    public String applyHtml(String str){
+        if(str==null){
+            return null;
+        }
+        List<StyleSpanInfo> allInfo=getSpanInfo();
+        if(allInfo==null){
+            return str;
+        }
+        StringBuilder builder=new StringBuilder();
+        char[] allChars=str.toCharArray();
+        int max=allChars.length;
+        for(int i=0;i<max;i++){
+            char ch=allChars[i];
+            boolean lastAppend=false;
+            for(StyleSpanInfo info:allInfo){
+                boolean isLast=(info.LAST==i);
+                if(info.FIRST==i || isLast){
+                    if(isLast && !lastAppend){
+                        builder.append(ch);
+                        lastAppend=true;
+                    }
+                    if(isLast){
+                        builder.append(info.getEndTag());
+                    }else {
+                        builder.append(info.getStartTag());
+                    }
+                }
+            }
+            if(!lastAppend){
+                builder.append(ch);
+            }
+        }
+        return builder.toString();
+    }
+    @Override
+    public void onBytesChanged() {
+        mStyleList=createStyleList();
+    }
+    @Override
+    public void setNull(boolean is_null){
+        if(!is_null){
+            return;
+        }
+        setStylePieceCount(0);
+    }
+    @Override
+    public void onReadBytes(BlockReader reader) throws IOException {
+        int nextPos=reader.searchNextIntPosition(4, END_VALUE);
+        if(nextPos<0){
+            return;
+        }
+        int len=nextPos-reader.getPosition()+4;
+        super.setBytesLength(len, false);
+        byte[] bts=getBytesInternal();
+        reader.readFully(bts);
+        onBytesChanged();
+    }
+    private static final int STRING_REF=0;
+    private static final int CHAR_FIRST=1;
+    private static final int CHAR_LAST=2;
+
+    private static final int STYLE_PIECE_COUNT=3;
+
+    private static final int END_VALUE=0xFFFFFFFF;
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/item/TableString.java b/src/main/java/com/reandroid/lib/arsc/item/TableString.java
new file mode 100644
index 0000000..dd67b8d
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/item/TableString.java
@@ -0,0 +1,7 @@
+package com.reandroid.lib.arsc.item;
+
+public class TableString extends StringItem {
+    public TableString(boolean utf8) {
+        super(utf8);
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/item/TypeString.java b/src/main/java/com/reandroid/lib/arsc/item/TypeString.java
new file mode 100644
index 0000000..28b2605
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/item/TypeString.java
@@ -0,0 +1,15 @@
+package com.reandroid.lib.arsc.item;
+
+
+public class TypeString extends StringItem {
+    public TypeString(boolean utf8) {
+        super(utf8);
+    }
+    public int getId(){
+        return getIndex()+1;
+    }
+    @Override
+    StyleItem getStyle(){
+        return null;
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/model/StyleSpanInfo.java b/src/main/java/com/reandroid/lib/arsc/model/StyleSpanInfo.java
new file mode 100644
index 0000000..48823db
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/model/StyleSpanInfo.java
@@ -0,0 +1,44 @@
+package com.reandroid.lib.arsc.model;
+
+public class StyleSpanInfo {
+    public final String TAG;
+    public final int FIRST;
+    public final int LAST;
+    public StyleSpanInfo(String tag, int first, int last){
+        this.TAG=tag;
+        this.FIRST=first;
+        this.LAST=last;
+    }
+    public String getStartTag(){
+        int i=TAG.indexOf(';');
+        StringBuilder builder=new StringBuilder();
+        builder.append('<');
+        if(i<0){
+            builder.append(TAG);
+        }else {
+            builder.append(TAG, 0, i);
+            builder.append(' ');
+            builder.append(TAG.substring(i+1));
+        }
+        builder.append('>');
+        return builder.toString();
+    }
+
+    public String getEndTag(){
+        int i=TAG.indexOf(';');
+        StringBuilder builder=new StringBuilder();
+        builder.append('<');
+        builder.append('/');
+        if(i<0){
+            builder.append(TAG);
+        }else {
+            builder.append(TAG, 0, i);
+        }
+        builder.append('>');
+        return builder.toString();
+    }
+    @Override
+    public String toString(){
+        return TAG+" ("+FIRST+", "+LAST+")";
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/pool/BaseStringPool.java b/src/main/java/com/reandroid/lib/arsc/pool/BaseStringPool.java
new file mode 100644
index 0000000..34b9db7
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/pool/BaseStringPool.java
@@ -0,0 +1,197 @@
+package com.reandroid.lib.arsc.pool;
+
+import com.reandroid.lib.arsc.chunk.ChunkType;
+import com.reandroid.lib.arsc.array.StringArray;
+import com.reandroid.lib.arsc.array.StyleArray;
+import com.reandroid.lib.arsc.base.Block;
+import com.reandroid.lib.arsc.chunk.BaseChunk;
+import com.reandroid.lib.arsc.io.BlockLoad;
+import com.reandroid.lib.arsc.io.BlockReader;
+import com.reandroid.lib.arsc.item.*;
+
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+
+
+public abstract class BaseStringPool<T extends StringItem> extends BaseChunk implements BlockLoad {
+    private final IntegerItem mCountStrings;
+    private final IntegerItem mCountStyles;
+    private final ShortItem mFlagUtf8;
+    private final ShortItem mFlagSorted;
+    private final IntegerItem mStartStrings;
+    private final IntegerItem mStartStyles;
+    private final IntegerArray mOffsetStrings;
+    private final IntegerArray mOffsetStyles;
+    private final StringArray<T> mArrayStrings;
+    private final StyleArray mArrayStyles;
+
+    private final Map<String, StringGroup<T>> mUniqueMap;
+
+
+    BaseStringPool(boolean is_utf8){
+        super(ChunkType.STRING, 4);
+
+        this.mCountStrings=new IntegerItem(); //header
+        this.mCountStyles=new IntegerItem(); //header
+        this.mFlagUtf8 =new ShortItem(); //header
+        this.mFlagSorted=new ShortItem(); //header
+        this.mStartStrings=new IntegerItem(); //header
+        this.mStartStyles=new IntegerItem(); //header
+
+        this.mOffsetStrings=new IntegerArray();//1
+        this.mOffsetStyles=new IntegerArray(); //2
+        this.mArrayStrings=newInstance(mOffsetStrings, mCountStrings, mStartStrings, is_utf8); //3
+        this.mArrayStyles=new StyleArray(mOffsetStyles, mCountStyles, mStartStyles); //4
+
+        addToHeader(mCountStrings);
+        addToHeader(mCountStyles);
+        addToHeader(mFlagUtf8);
+        addToHeader(mFlagSorted);
+        addToHeader(mStartStrings);
+        addToHeader(mStartStyles);
+
+        addChild(mOffsetStrings);
+        addChild(mOffsetStyles);
+        addChild(mArrayStrings);
+        addChild(mArrayStyles);
+
+        setUtf8(is_utf8, false);
+
+        mFlagUtf8.setBlockLoad(this);
+
+        mUniqueMap=new HashMap<>();
+
+    }
+    public boolean contains(String str){
+        return mUniqueMap.containsKey(str);
+    }
+    public final T get(int index){
+        return mArrayStrings.get(index);
+    }
+    public final StringGroup<T> get(String str){
+        return mUniqueMap.get(str);
+    }
+    public final T getOrCreate(String str){
+        StringGroup<T> group=getOrCreateGroup(str);
+        T[] items=group.getItems();
+        if(items.length==0){
+            T t=createNewString(str);
+            group.add(t);
+            items=group.getItems();
+        }
+        return items[0];
+    }
+    private StringGroup<T> getOrCreateGroup(String str){
+        StringGroup<T> group=get(str);
+        if(group!=null){
+            return group;
+        }
+        T[] items=mArrayStrings.newInstance(0);
+        group=new StringGroup<>(mArrayStrings, str, items);
+        mUniqueMap.put(str, group);
+        return group;
+    }
+    private T createNewString(String str){
+        T item=mArrayStrings.createNext();
+        item.set(str);
+        mCountStrings.set(mArrayStrings.childesCount());
+        return item;
+    }
+    private void reUpdateUniqueMap(){
+        mUniqueMap.clear();
+        T[] allChildes=getStrings();
+        if(allChildes==null){
+            return;
+        }
+        int max=allChildes.length;
+        for(int i=0;i<max;i++){
+            T item=allChildes[i];
+            if(item==null){
+                continue;
+            }
+            String str=item.get();
+            if(str==null){
+                continue;
+            }
+            updateUniqueMap(item);
+        }
+    }
+    private void updateUniqueMap(T item){
+        String str=item.get();
+        StringGroup<T> group= getOrCreateGroup(str);
+        group.add(item);
+    }
+    public final StyleItem getStyle(int index){
+        return mArrayStyles.get(index);
+    }
+    public final int countStrings(){
+        return mArrayStrings.childesCount();
+    }
+    public final int countStyles(){
+        return mArrayStyles.childesCount();
+    }
+
+    public final T[] getStrings(){
+        return mArrayStrings.getChildes();
+    }
+    public final StyleItem[] getStyles(){
+        return mArrayStyles.getChildes();
+    }
+    private void setUtf8Flag(short flag){
+        mFlagUtf8.set(flag);
+    }
+    public void setUtf8(boolean is_utf8){
+        setUtf8(is_utf8, true);
+    }
+    private void setSortedFlag(short flag){
+        mFlagSorted.set(flag);
+    }
+    public final void setSorted(boolean sorted){
+        if(sorted){
+            setSortedFlag(FLAG_SORTED);
+        }else {
+            setSortedFlag((short)0);
+        }
+    }
+    private void setUtf8(boolean is_utf8, boolean updateAll){
+        boolean old= isUtf8Flag();
+        if(is_utf8){
+            setUtf8Flag(UTF8_FLAG_VALUE);
+        }else {
+            setUtf8Flag((short) 0);
+        }
+        if(!updateAll || old == isUtf8Flag()){
+            return;
+        }
+        mArrayStrings.setUtf8(is_utf8);
+    }
+    private boolean isUtf8Flag(){
+        return (mFlagUtf8.get() & FLAG_UTF8) !=0;
+    }
+    private boolean isSortedFlag(){
+        return (mFlagSorted.get() & FLAG_SORTED) !=0;
+    }
+
+
+    abstract StringArray<T> newInstance(IntegerArray offsets, IntegerItem itemCount, IntegerItem itemStart, boolean is_utf8);
+    @Override
+    protected void onChunkRefreshed() {
+
+    }
+    @Override
+    public void onChunkLoaded() {
+        reUpdateUniqueMap();
+    }
+
+    @Override
+    public void onBlockLoaded(BlockReader reader, Block sender) throws IOException {
+        if(sender== mFlagUtf8){
+            mArrayStrings.setUtf8(isUtf8Flag());
+        }
+    }
+    private static final short UTF8_FLAG_VALUE=0x0100;
+
+    private static final short FLAG_UTF8 = 0x0100;
+    private static final short FLAG_SORTED = 0x0100;
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/pool/PoolType.java b/src/main/java/com/reandroid/lib/arsc/pool/PoolType.java
new file mode 100644
index 0000000..9239bf6
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/pool/PoolType.java
@@ -0,0 +1,8 @@
+package com.reandroid.lib.arsc.pool;
+
+public enum PoolType {
+    TABLE,
+    SPEC,
+    TYPE,
+    XML
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/pool/ResXmlStringPool.java b/src/main/java/com/reandroid/lib/arsc/pool/ResXmlStringPool.java
new file mode 100644
index 0000000..5010ac6
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/pool/ResXmlStringPool.java
@@ -0,0 +1,17 @@
+package com.reandroid.lib.arsc.pool;
+
+import com.reandroid.lib.arsc.array.StringArray;
+import com.reandroid.lib.arsc.array.ResXmlStringArray;
+import com.reandroid.lib.arsc.item.IntegerArray;
+import com.reandroid.lib.arsc.item.IntegerItem;
+import com.reandroid.lib.arsc.item.ResXmlString;
+
+public class ResXmlStringPool extends BaseStringPool<ResXmlString> {
+    public ResXmlStringPool(boolean is_utf8) {
+        super(is_utf8);
+    }
+    @Override
+    StringArray<ResXmlString> newInstance(IntegerArray offsets, IntegerItem itemCount, IntegerItem itemStart, boolean is_utf8) {
+        return new ResXmlStringArray(offsets, itemCount, itemStart, is_utf8);
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/pool/SpecStringPool.java b/src/main/java/com/reandroid/lib/arsc/pool/SpecStringPool.java
new file mode 100644
index 0000000..1b75f8e
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/pool/SpecStringPool.java
@@ -0,0 +1,18 @@
+package com.reandroid.lib.arsc.pool;
+
+import com.reandroid.lib.arsc.array.SpecStringArray;
+import com.reandroid.lib.arsc.array.StringArray;
+import com.reandroid.lib.arsc.item.IntegerArray;
+import com.reandroid.lib.arsc.item.IntegerItem;
+import com.reandroid.lib.arsc.item.SpecString;
+
+public class SpecStringPool extends BaseStringPool<SpecString> {
+    public SpecStringPool(boolean is_utf8){
+        super(is_utf8);
+    }
+
+    @Override
+    StringArray<SpecString> newInstance(IntegerArray offsets, IntegerItem itemCount, IntegerItem itemStart, boolean is_utf8) {
+        return new SpecStringArray(offsets, itemCount, itemStart, is_utf8);
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/pool/StringGroup.java b/src/main/java/com/reandroid/lib/arsc/pool/StringGroup.java
new file mode 100644
index 0000000..51c6115
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/pool/StringGroup.java
@@ -0,0 +1,105 @@
+package com.reandroid.lib.arsc.pool;
+
+import com.reandroid.lib.arsc.base.BlockArrayCreator;
+import com.reandroid.lib.arsc.item.StringItem;
+
+import java.lang.reflect.Array;
+
+public class StringGroup<T extends StringItem> {
+    private final BlockArrayCreator<T> mBlockArrayCreator;
+    private final String name;
+    private T[] items;
+    private final int hashCode;
+    StringGroup(BlockArrayCreator<T> blockArrayCreator, String name, T[] items){
+        this.mBlockArrayCreator=blockArrayCreator;
+        this.name=name;
+        this.items=items;
+        this.hashCode=(getClass().getName()+"-"+name).hashCode();
+    }
+    public boolean contains(T strItem){
+        if(strItem==null){
+            return false;
+        }
+        int len=items.length;
+        for(int i=0;i<len;i++){
+            if(strItem==items[i]){
+                return true;
+            }
+        }
+        return false;
+    }
+    public void remove(T strItem){
+        if(strItem==null){
+            return;
+        }
+        boolean found=false;
+        int len=items.length;
+        for(int i=0;i<len;i++){
+            if(strItem==items[i]){
+                items[i]=null;
+                found=true;
+            }
+        }
+        if(found){
+            trimToSize();
+        }
+    }
+    public void add(T strItem){
+        if(strItem==null){
+            return;
+        }
+        int index=items.length;
+        T[] update=createNew(index+1);
+        System.arraycopy(items, 0, update, 0, index);
+        update[index]=strItem;
+        items=update;
+    }
+    public T[] getItems(){
+        return items;
+    }
+    private void trimToSize(){
+        int count=countNonNull();
+        int len=items.length;
+        if(count==len){
+            return;
+        }
+        T[] update=createNew(count);
+        int index=0;
+        for(int i=0;i<len;i++){
+            T block=items[i];
+            if(block!=null){
+                update[index]=block;
+                index++;
+            }
+        }
+        items=update;
+    }
+    private int countNonNull(){
+        int result=0;
+        for(T t:items){
+            if(t!=null){
+                result++;
+            }
+        }
+        return result;
+    }
+    private T[] createNew(int len){
+        return mBlockArrayCreator.newInstance(len);
+    }
+    @Override
+    public int hashCode(){
+        return hashCode;
+    }
+    @Override
+    public boolean equals(Object obj){
+        if(obj instanceof StringGroup){
+            StringGroup other=(StringGroup)obj;
+            return name.equals(other.name);
+        }
+        return false;
+    }
+    @Override
+    public String toString(){
+        return items.length+"{"+name+"}";
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/pool/TableStringPool.java b/src/main/java/com/reandroid/lib/arsc/pool/TableStringPool.java
new file mode 100644
index 0000000..6ea2040
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/pool/TableStringPool.java
@@ -0,0 +1,17 @@
+package com.reandroid.lib.arsc.pool;
+
+import com.reandroid.lib.arsc.array.StringArray;
+import com.reandroid.lib.arsc.array.TableStringArray;
+import com.reandroid.lib.arsc.item.IntegerArray;
+import com.reandroid.lib.arsc.item.IntegerItem;
+import com.reandroid.lib.arsc.item.TableString;
+
+public class TableStringPool extends BaseStringPool<TableString> {
+    public TableStringPool(boolean is_utf8) {
+        super(is_utf8);
+    }
+    @Override
+    StringArray<TableString> newInstance(IntegerArray offsets, IntegerItem itemCount, IntegerItem itemStart, boolean is_utf8) {
+        return new TableStringArray(offsets, itemCount, itemStart, is_utf8);
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/pool/TypeStringPool.java b/src/main/java/com/reandroid/lib/arsc/pool/TypeStringPool.java
new file mode 100644
index 0000000..bbcb455
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/pool/TypeStringPool.java
@@ -0,0 +1,20 @@
+package com.reandroid.lib.arsc.pool;
+
+import com.reandroid.lib.arsc.array.StringArray;
+import com.reandroid.lib.arsc.array.TypeStringArray;
+import com.reandroid.lib.arsc.item.IntegerArray;
+import com.reandroid.lib.arsc.item.IntegerItem;
+import com.reandroid.lib.arsc.item.TypeString;
+
+public class TypeStringPool extends BaseStringPool<TypeString> {
+    public TypeStringPool(boolean is_utf8) {
+        super(is_utf8);
+    }
+    public TypeString getById(int id){
+        return super.get(id-1);
+    }
+    @Override
+    StringArray<TypeString> newInstance(IntegerArray offsets, IntegerItem itemCount, IntegerItem itemStart, boolean is_utf8) {
+        return new TypeStringArray(offsets, itemCount, itemStart, is_utf8);
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/value/BaseResValue.java b/src/main/java/com/reandroid/lib/arsc/value/BaseResValue.java
new file mode 100644
index 0000000..c864cd6
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/value/BaseResValue.java
@@ -0,0 +1,95 @@
+package com.reandroid.lib.arsc.value;
+
+import com.reandroid.lib.arsc.base.Block;
+import com.reandroid.lib.arsc.item.BlockItem;
+
+public abstract class BaseResValue extends BlockItem {
+    BaseResValue(int bytesLength){
+        super(bytesLength);
+    }
+
+    public ValueType getValueType(){
+        return ValueType.valueOf(getType());
+    }
+    public EntryBlock getEntryBlock(){
+        Block parent=getParent();
+        while(parent!=null){
+            if(parent instanceof EntryBlock){
+                return (EntryBlock)parent;
+            }
+            parent=parent.getParent();
+        }
+        return null;
+    }
+
+    public void setType(ValueType valueType){
+        byte type=0;
+        if(valueType!=null){
+            type=valueType.getByte();
+        }
+        setType(type);
+    }
+
+    abstract void setHeaderSize(short size);
+    abstract short getHeaderSize();
+
+    abstract void setReserved(byte reserved);
+    abstract byte getReserved();
+
+    public abstract void setType(byte type);
+    public abstract byte getType();
+    public abstract int getData();
+    public abstract void setData(int data);
+
+    @Override
+    public void onBytesChanged() {
+
+    }
+
+
+    int getInt(int offset){
+        byte[] bts = getBytesInternal();
+        return bts[offset] & 0xff |
+                (bts[offset+1] & 0xff) << 8 |
+                (bts[offset+2] & 0xff) << 16 |
+                (bts[offset+3] & 0xff) << 24;
+    }
+    void setInt(int offset, int val){
+        if(val==getInt(offset)){
+            return;
+        }
+        byte[] bts = getBytesInternal();
+        bts[offset+3]= (byte) (val >>> 24 & 0xff);
+        bts[offset+2]= (byte) (val >>> 16 & 0xff);
+        bts[offset+1]= (byte) (val >>> 8 & 0xff);
+        bts[offset]= (byte) (val & 0xff);
+        onBytesChanged();
+    }
+
+    void setShort(int offset, short val){
+        if(val==getShort(offset)){
+            return;
+        }
+        byte[] bts = getBytesInternal();
+        bts[offset+1]= (byte) (val >>> 8 & 255);
+        bts[offset]= (byte) (val & 255);
+        onBytesChanged();
+    }
+    short getShort(int offset){
+        byte[] bts=getBytesInternal();
+        int i= bts[offset] & 0xff |
+                (bts[offset+1] & 0xff) << 8 ;
+        return (short)i;
+    }
+    void setByte(int offset, byte b){
+        byte[] bts=getBytesInternal();
+        if(b==bts[offset]){
+            return;
+        }
+        bts[offset]=b;
+        onBytesChanged();
+    }
+    byte getByte(int offset){
+        return getBytesInternal()[offset];
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/value/EntryBlock.java b/src/main/java/com/reandroid/lib/arsc/value/EntryBlock.java
new file mode 100644
index 0000000..883260d
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/value/EntryBlock.java
@@ -0,0 +1,332 @@
+package com.reandroid.lib.arsc.value;
+
+import com.reandroid.lib.arsc.base.Block;
+import com.reandroid.lib.arsc.base.BlockCounter;
+import com.reandroid.lib.arsc.chunk.PackageBlock;
+import com.reandroid.lib.arsc.chunk.TypeBlock;
+import com.reandroid.lib.arsc.io.BlockReader;
+import com.reandroid.lib.arsc.item.IntegerItem;
+import com.reandroid.lib.arsc.item.ShortItem;
+import com.reandroid.lib.arsc.item.SpecString;
+import com.reandroid.lib.arsc.item.TypeString;
+import com.reandroid.lib.arsc.pool.SpecStringPool;
+
+
+import java.io.IOException;
+import java.io.OutputStream;
+
+public class EntryBlock extends Block {
+    private ShortItem mHeaderSize;
+    private ShortItem mFlags;
+    private IntegerItem mSpecReference;
+    private BaseResValue mResValue;
+    private boolean mUnLocked;
+    public EntryBlock() {
+        super();
+    }
+
+    public short getFlags(){
+        return mFlags.get();
+    }
+    public void setFlags(short sh){
+        mFlags.set(sh);
+    }
+    public int getSpecReference(){
+        return mSpecReference.get();
+    }
+    public void setSpecReference(int ref){
+        mSpecReference.set(ref);
+    }
+    public BaseResValue getResValue(){
+        return mResValue;
+    }
+    public void setResValue(BaseResValue resValue){
+        if(resValue==mResValue){
+            return;
+        }
+        if(resValue!=null){
+            resValue.setIndex(3);
+            resValue.setParent(this);
+        }
+        if(mResValue!=null){
+            mResValue.setIndex(-1);
+            mResValue.setParent(null);
+        }
+        mResValue=resValue;
+    }
+
+    public void setFlagComplex(boolean is_complex){
+        if(is_complex){
+            setFlags(FLAG_COMPLEX);
+        }else {
+            setFlags(FLAG_INT);
+        }
+        refreshHeaderSize();
+        refreshResValue();
+    }
+
+    public ResConfig getResConfig(){
+        TypeBlock typeBlock=getTypeBlock();
+        if(typeBlock!=null){
+            return typeBlock.getResConfig();
+        }
+        return null;
+    }
+    public SpecString getSpecString(){
+        TypeBlock typeBlock=getTypeBlock();
+        if(typeBlock==null){
+            return null;
+        }
+        PackageBlock packageBlock=typeBlock.getPackageBlock();
+        if(packageBlock==null){
+            return null;
+        }
+        SpecStringPool specStringPool=packageBlock.getSpecStringPool();
+        return specStringPool.get(getSpecReference());
+    }
+    public TypeString getTypeString(){
+        TypeBlock typeBlock=getTypeBlock();
+        if(typeBlock!=null){
+            return typeBlock.getTypeString();
+        }
+        return null;
+    }
+    public String getResourceName(){
+        return getResourceName("@", null);
+    }
+    public String getResourceName(String prefix){
+        return getResourceName(prefix, null);
+    }
+    public String getResourceName(String prefix, String appName){
+        if(isNull()){
+            return null;
+        }
+        TypeString type=getTypeString();
+        if(type==null){
+            return null;
+        }
+        SpecString spec=getSpecString();
+        if(spec==null){
+            return null;
+        }
+        StringBuilder builder=new StringBuilder();
+        if(prefix!=null){
+            builder.append(prefix);
+        }
+        if(appName!=null){
+            builder.append(appName);
+        }
+        builder.append(type.get());
+        builder.append('/');
+        builder.append(spec.get());
+        return builder.toString();
+    }
+    public int getResourceId(){
+        TypeBlock typeBlock=getTypeBlock();
+        if(typeBlock==null){
+            return 0;
+        }
+        PackageBlock packageBlock=typeBlock.getPackageBlock();
+        if(packageBlock==null){
+            return 0;
+        }
+        int pkgId=packageBlock.getId();
+        int typeId=typeBlock.getTypeId();
+        int entryId=getIndex();
+        return ((pkgId << 24) | (typeId << 16) | entryId);
+    }
+    public TypeBlock getTypeBlock(){
+        Block parent=getParent();
+        while (parent!=null){
+            if(parent instanceof TypeBlock){
+                return (TypeBlock)parent;
+            }
+            parent=parent.getParent();
+        }
+        return null;
+    }
+
+
+    private void unlockEntry(){
+        if(mUnLocked){
+            return;
+        }
+        mUnLocked =true;
+        this.mHeaderSize =new ShortItem();
+        this.mFlags =new ShortItem();
+        this.mSpecReference = new IntegerItem();
+
+        mHeaderSize.setIndex(0);
+        mFlags.setIndex(1);
+        mSpecReference.setIndex(2);
+
+        mHeaderSize.setParent(this);
+        mFlags.setParent(this);
+        mSpecReference.setParent(this);
+
+    }
+    private void lockEntry(){
+        if(!mUnLocked){
+            return;
+        }
+        mUnLocked =false;
+        mHeaderSize.setParent(null);
+        mFlags.setParent(null);
+        mSpecReference.setParent(null);
+
+        mHeaderSize.setIndex(-1);
+        mFlags.setIndex(-1);
+        mSpecReference.setIndex(-1);
+        removeResValue();
+
+        this.mHeaderSize =null;
+        this.mFlags =null;
+        this.mSpecReference =null;
+    }
+    private void removeResValue(){
+        if(mResValue!=null){
+            mResValue.setParent(null);
+            mResValue.setIndex(-1);
+            mResValue=null;
+        }
+    }
+    private void refreshResValue(){
+        if(mResValue==null){
+            return;
+        }
+        if(isFlagsComplex()==(mResValue instanceof ResValueBag)){
+            return;
+        }
+        removeResValue();
+        createResValue();
+    }
+    private void refreshHeaderSize(){
+        if(isFlagsComplex()){
+            mHeaderSize.set(HEADER_COMPLEX);
+        }else {
+            mHeaderSize.set(HEADER_INT);
+        }
+    }
+    private void createResValue(){
+        if(getResValue()!=null){
+            return;
+        }
+        BaseResValue resValue;
+        if(isFlagsComplex()){
+            resValue=new ResValueBag();
+        }else {
+            resValue=new ResValueInt();
+        }
+        setResValue(resValue);
+    }
+
+    private boolean isFlagsComplex(){
+        return ((mFlags.get() & FLAG_COMPLEX_MASK) != 0);
+    }
+
+    @Override
+    public void setNull(boolean is_null){
+        if(is_null){
+            lockEntry();
+        }else {
+            unlockEntry();
+        }
+        super.setNull(is_null);
+    }
+    @Override
+    public boolean isNull(){
+        if(super.isNull() || !mUnLocked){
+            return true;
+        }
+        return mResValue==null;
+    }
+    @Override
+    public byte[] getBytes() {
+        if(isNull()){
+            return null;
+        }
+        byte[] results=mHeaderSize.getBytes();
+        results=addBytes(results, mFlags.getBytes());
+        results=addBytes(results, mSpecReference.getBytes());
+        results=addBytes(results, mResValue.getBytes());
+        return results;
+    }
+    @Override
+    public int countBytes() {
+        if(isNull()){
+            return 0;
+        }
+        return 8+mResValue.countBytes();
+    }
+    @Override
+    public void onCountUpTo(BlockCounter counter) {
+        if(counter.FOUND){
+            return;
+        }
+        if(counter.END==this){
+            counter.FOUND=true;
+            return;
+        }
+        if(isNull()){
+            return;
+        }
+        counter.addCount(countBytes());
+        mHeaderSize.onCountUpTo(counter);
+        mFlags.onCountUpTo(counter);
+        mSpecReference.onCountUpTo(counter);
+        mResValue.onCountUpTo(counter);
+    }
+    @Override
+    protected int onWriteBytes(OutputStream stream) throws IOException {
+        if(isNull()){
+            return 0;
+        }
+        int result=mHeaderSize.writeBytes(stream);
+        result+=mFlags.writeBytes(stream);
+        result+= mSpecReference.writeBytes(stream);
+        result+=mResValue.writeBytes(stream);
+        return result;
+    }
+
+    @Override
+    public void onReadBytes(BlockReader reader) throws IOException{
+        setNull(false);
+        removeResValue();
+        mHeaderSize.readBytes(reader);
+        mFlags.readBytes(reader);
+        mSpecReference.readBytes(reader);
+        createResValue();
+        mResValue.readBytes(reader);
+    }
+    public String toString(){
+        StringBuilder builder=new StringBuilder();
+        builder.append(getClass().getSimpleName());
+        builder.append(": ");
+        ResConfig resConfig=getResConfig();
+        if(resConfig!=null){
+            builder.append(resConfig.toString());
+            builder.append(", ");
+        }
+        builder.append(" resId=");
+        builder.append(String.format("0x%08x", getResourceId()));
+        if(isNull()){
+            builder.append(", null entry");
+            return builder.toString();
+        }
+        String name=getResourceName();
+        if(name!=null){
+            builder.append('(');
+            builder.append(name);
+            builder.append(')');
+        }
+        return builder.toString();
+    }
+
+    private final static short FLAG_COMPLEX_MASK = 0x0001;
+
+    private final static short FLAG_COMPLEX = 0x0003;
+    private final static short FLAG_INT = 0x0002;
+
+    private final static short HEADER_COMPLEX=0x0010;
+    private final static short HEADER_INT=0x0008;
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/value/LibraryInfo.java b/src/main/java/com/reandroid/lib/arsc/value/LibraryInfo.java
new file mode 100644
index 0000000..385a7a7
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/value/LibraryInfo.java
@@ -0,0 +1,91 @@
+package com.reandroid.lib.arsc.value;
+
+import com.reandroid.lib.arsc.base.Block;
+import com.reandroid.lib.arsc.base.BlockCounter;
+import com.reandroid.lib.arsc.io.BlockReader;
+import com.reandroid.lib.arsc.item.IntegerItem;
+import com.reandroid.lib.arsc.item.PackageName;
+
+import java.io.IOException;
+import java.io.OutputStream;
+
+public class LibraryInfo extends Block {
+    private final IntegerItem mPackageId;
+    private final PackageName mPackageName;
+
+    public LibraryInfo(){
+        super();
+        this.mPackageId=new IntegerItem();
+        this.mPackageName=new PackageName();
+        mPackageId.setIndex(0);
+        mPackageId.setParent(this);
+        mPackageName.setIndex(1);
+        mPackageName.setParent(this);
+    }
+
+    public int getPackageId(){
+        return mPackageId.get();
+    }
+    public void setPackageId(int id){
+        mPackageId.set(id);
+    }
+    public String getPackageName(){
+        return mPackageName.get();
+    }
+    public void setPackageName(String packageName){
+        mPackageName.set(packageName);
+    }
+
+    @Override
+    public byte[] getBytes() {
+        if(isNull()){
+            return null;
+        }
+        return addBytes(mPackageId.getBytes(), mPackageName.getBytes());
+    }
+    @Override
+    public int countBytes() {
+        if(isNull()){
+            return 0;
+        }
+        return mPackageId.countBytes()+mPackageName.countBytes();
+    }
+    @Override
+    public void onCountUpTo(BlockCounter counter) {
+        if(counter.FOUND){
+            return;
+        }
+        if(counter.END==this){
+            counter.FOUND=true;
+            return;
+        }
+        mPackageId.onCountUpTo(counter);
+        mPackageName.onCountUpTo(counter);
+    }
+    @Override
+    protected int onWriteBytes(OutputStream stream) throws IOException {
+        int result=mPackageId.writeBytes(stream);
+        result+=mPackageName.writeBytes(stream);
+        return result;
+    }
+    @Override
+    public void onReadBytes(BlockReader reader) throws IOException{
+        mPackageId.readBytes(reader);
+        mPackageName.readBytes(reader);
+    }
+
+    @Override
+    public String toString(){
+        StringBuilder builder=new StringBuilder();
+        builder.append("LIBRARY{");
+        builder.append(String.format("0x%02x", getPackageId()));
+        builder.append(':');
+        String name=getPackageName();
+        if(name==null){
+            name="NULL";
+        }
+        builder.append(name);
+        builder.append('}');
+        return builder.toString();
+    }
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/value/ResConfig.java b/src/main/java/com/reandroid/lib/arsc/value/ResConfig.java
new file mode 100644
index 0000000..624be98
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/value/ResConfig.java
@@ -0,0 +1,607 @@
+package com.reandroid.lib.arsc.value;
+
+import com.reandroid.lib.arsc.base.Block;
+import com.reandroid.lib.arsc.base.BlockArray;
+import com.reandroid.lib.arsc.io.BlockLoad;
+import com.reandroid.lib.arsc.io.BlockReader;
+import com.reandroid.lib.arsc.item.ByteArray;
+import com.reandroid.lib.arsc.item.ByteItem;
+import com.reandroid.lib.arsc.item.IntegerItem;
+import com.reandroid.lib.arsc.item.ShortItem;
+
+import java.io.IOException;
+
+public class ResConfig extends BlockArray<Block> implements BlockLoad {
+    private final IntegerItem configSize;
+    private final ShortItem mcc;
+    private final ShortItem mnc;
+    private final ByteItem languageIn0;
+    private final ByteItem languageIn1;
+    private final ByteItem countryIn0;
+    private final ByteItem countryIn1;
+    private final ByteItem orientation;
+    private final ByteItem touchscreen;
+    private final ShortItem density;
+    private final ByteItem keyboard;
+    private final ByteItem navigation;
+    private final ByteItem inputFlags;
+    private final ByteItem inputPad0;
+    private final ShortItem screenWidth;
+    private final ShortItem  screenHeight;
+    private final ShortItem sdkVersion;
+    private final ShortItem minorVersion;
+    private final ByteItem screenLayout;
+    private final ByteItem uiMode;
+    private final ShortItem smallestScreenWidthDp;
+    private final ShortItem screenWidthDp;
+    private final ShortItem screenHeightDp;
+    private final ByteArray localeScript;
+    private final ByteArray localeVariant;
+    private final ByteItem screenLayout2;
+    private final ByteItem colorMode;
+    private final ShortItem reservedPadding;
+    private final ByteArray skipSizeGreater56;
+    private final ByteArray exceedingSize;
+    private final ByteArray remainingSize;
+    private int mCurrentSize;
+    private boolean mIsUpdatingSize;
+
+    private String mQualifiers;
+
+
+    public ResConfig(){
+        super();
+
+        this.configSize = new IntegerItem(64);
+        this.mcc = new ShortItem();
+        this.mnc = new ShortItem();
+        this.languageIn0 = new ByteItem();
+        this.languageIn1 = new ByteItem();
+        this.countryIn0 = new ByteItem();
+        this.countryIn1 = new ByteItem();
+        this.orientation = new ByteItem();
+        this.touchscreen = new ByteItem();
+        this.density = new ShortItem();
+        this.keyboard = new ByteItem();
+        this.navigation = new ByteItem();
+        this.inputFlags = new ByteItem();
+        this.inputPad0 = new ByteItem();
+        this.screenWidth = new ShortItem();
+        this.screenHeight = new ShortItem();
+        this.sdkVersion = new ShortItem();
+        this.minorVersion = new ShortItem();
+        this.screenLayout = new ByteItem();
+        this.uiMode = new ByteItem();
+        this.smallestScreenWidthDp = new ShortItem();
+        this.screenWidthDp = new ShortItem();
+        this.screenHeightDp = new ShortItem();
+        // size sum=44;
+        this.localeScript = new ByteArray(4);
+        this.localeVariant = new ByteArray(8);
+        this.screenLayout2 = new ByteItem();
+        this.colorMode = new ByteItem();
+        this.reservedPadding = new ShortItem();
+        this.skipSizeGreater56 = new ByteArray(4);
+        this.exceedingSize = new ByteArray(8);
+        this.remainingSize = new ByteArray();
+
+        configSize.setBlockLoad(this);
+        initChildes();
+        mCurrentSize=64;
+        setConfigSize(mCurrentSize);
+    }
+
+    @Override
+    protected void onRefreshed() {
+
+    }
+
+    @Override
+    public Block newInstance() {
+        return null;
+    }
+
+    @Override
+    public Block[] newInstance(int len) {
+        return new Block[len];
+    }
+
+    public void parseName(String name){
+        ResConfigHelper.parseQualifiers(this, name);
+        mQualifiers=null;
+    }
+
+
+    private void initChildes(){
+        add(configSize);
+        add(mcc);
+        add(mnc);
+        add(languageIn0);
+        add(languageIn1);
+        add(countryIn0);
+        add(countryIn1);
+        add(orientation);
+        add(touchscreen);
+        add(density);
+        add(keyboard);
+        add(navigation);
+        add(inputFlags);
+        add(inputPad0);
+        add(screenWidth);
+        add(screenHeight);
+        add(sdkVersion);
+        add(minorVersion);
+        add(screenLayout);
+        add(uiMode);
+        add(smallestScreenWidthDp);
+        add(screenWidthDp);
+        add(screenHeightDp);
+        add(localeScript);
+        add(localeVariant);
+        add(screenLayout2);
+        add(colorMode);
+        add(reservedPadding);
+        add(skipSizeGreater56);
+        add(exceedingSize);
+        add(remainingSize);
+    }
+    private void resetToDefault(){
+        configSize.set(0);
+        mcc.set((short) 0);
+        mnc.set((short) 0);
+        languageIn0.set((byte)0);
+        languageIn1.set((byte)0);
+        countryIn0.set((byte)0);
+        countryIn1.set((byte)0);
+        orientation.set((byte)0);
+        touchscreen.set((byte)0);
+        density.set((short) 0);
+        keyboard.set((byte)0);
+        navigation.set((byte)0);
+        inputFlags.set((byte)0);
+        inputPad0.set((byte)0);
+        screenWidth.set((short) 0);
+        screenHeight.set((short) 0);
+        sdkVersion.set((short) 0);
+        minorVersion.set((short) 0);
+        screenLayout.set((byte)0);
+        uiMode.set((byte)0);
+        smallestScreenWidthDp.set((byte)0);
+        screenWidthDp.set((byte)0);
+        screenHeightDp.set((byte)0);
+        localeScript.clear();
+        localeVariant.clear();
+        screenLayout2.set((byte)0);
+        colorMode.set((byte)0);
+        reservedPadding.set((short) 0);
+        skipSizeGreater56.clear();
+        exceedingSize.clear();
+        remainingSize.clear();
+        mCurrentSize=0;
+        setConfigSize(DEFAULT_CONFIG_SIZE);
+    }
+    public void setConfigSize(int i){
+        this.configSize.set(i);
+        updateConfigSize(i);
+    }
+    public int getConfigSize(){
+        return this.configSize.get();
+    }
+    public void setMcc(short sh){
+        this.mcc.set(sh);
+    }
+    public short getMcc(){
+        return this.mcc.get();
+    }
+    public void setMnc(short sh){
+        this.mnc.set(sh);
+    }
+    public short getMnc(){
+        return this.mnc.get();
+    }
+    public void setLanguageIn0(byte b){
+        byte old=languageIn0.get();
+        this.languageIn0.set(b);
+        valuesChanged(b, old);
+    }
+    public byte getLanguageIn0(){
+        return this.languageIn0.get();
+    }
+    public void setLanguageIn1(byte b){
+        byte old=languageIn1.get();
+        this.languageIn1.set(b);
+        valuesChanged(b, old);
+    }
+    public byte getLanguageIn1(){
+        return this.languageIn1.get();
+    }
+    public char[] getLanguage(){
+        byte b0=getLanguageIn0();
+        byte b1=getLanguageIn1();
+        return unpackLanguageOrRegion(b0, b1, 'a');
+    }
+    public void setLanguage(char[] chs){
+        byte[] bts;
+        if(isNull(chs)){
+            bts=new byte[2];
+        }else {
+            bts=packLanguageOrRegion(chs);
+        }
+        setLanguageIn0(bts[0]);
+        setLanguageIn1(bts[1]);
+    }
+    public void setCountryIn0(byte b){
+        byte old=countryIn0.get();
+        this.countryIn0.set(b);
+        valuesChanged(b, old);
+    }
+    public byte getCountryIn0(){
+        return this.countryIn0.get();
+    }
+    public void setCountryIn1(byte b){
+        byte old=countryIn1.get();
+        this.countryIn1.set(b);
+        valuesChanged(b, old);
+    }
+    public byte getCountryIn1(){
+        return this.countryIn1.get();
+    }
+    public char[] getRegion(){
+        byte b0=getCountryIn0();
+        byte b1=getCountryIn1();
+        return unpackLanguageOrRegion(b0, b1, '0');
+    }
+    public void setRegion(char[] chs){
+        byte[] bts;
+        if(isNull(chs)){
+            bts=new byte[2];
+        }else {
+            bts=packLanguageOrRegion(chs);
+        }
+        setCountryIn0(bts[0]);
+        setCountryIn1(bts[1]);
+    }
+    public void setOrientation(byte b){
+        byte old=orientation.get();
+        this.orientation.set(b);
+        valuesChanged(b, old);
+    }
+    public byte getOrientation(){
+        return this.orientation.get();
+    }
+    public void setTouchscreen(byte b){
+        byte old=touchscreen.get();
+        this.touchscreen.set(b);
+        valuesChanged(b, old);
+    }
+    public byte getTouchscreen(){
+        return this.touchscreen.get();
+    }
+    public void setDensity(short sh){
+        short old=density.get();
+        this.density.set(sh);
+        valuesChanged(sh, old);
+    }
+    public short getDensity(){
+        return this.density.get();
+    }
+    public void setKeyboard(byte b){
+        this.keyboard.set(b);
+    }
+    public byte getKeyboard(){
+        return this.keyboard.get();
+    }
+    public void setNavigation(byte b){
+        this.navigation.set(b);
+    }
+    public byte getNavigation(){
+        return this.navigation.get();
+    }
+    public void setInputFlags(byte b){
+        this.inputFlags.set(b);
+    }
+    public byte getInputFlags(){
+        return this.inputFlags.get();
+    }
+    public void setInputPad0(byte b){
+        this.inputPad0.set(b);
+    }
+    public byte getInputPad0(){
+        return this.inputPad0.get();
+    }
+    public void setScreenSize(short w, short h){
+        this.setScreenWidth(w);
+        this.setScreenHeight(h);
+    }
+    public void setScreenWidth(short sh){
+        short old=screenWidth.get();
+        this.screenWidth.set(sh);
+        valuesChanged(sh, old);
+    }
+    public short getScreenWidth(){
+        return this.screenWidth.get();
+    }
+    public void setScreenHeight(short sh){
+        short old=screenHeight.get();
+        this.screenHeight.set(sh);
+        valuesChanged(sh, old);
+    }
+    public short getScreenHeight(){
+        return this.screenHeight.get();
+    }
+    public void setSdkVersion(short sh){
+        short old=sdkVersion.get();
+        this.sdkVersion.set(sh);
+        valuesChanged(sh, old);
+    }
+    public short getSdkVersion(){
+        return this.sdkVersion.get();
+    }
+    public void setMinorVersion(short sh){
+        this.minorVersion.set(sh);
+    }
+    public short getMinorVersion(){
+        return this.minorVersion.get();
+    }
+    public void setScreenLayout(byte b){
+        this.screenLayout.set(b);
+    }
+    public byte getScreenLayout(){
+        return this.screenLayout.get();
+    }
+    public void setUiMode(byte b){
+        this.uiMode.set(b);
+    }
+    public byte getUiMode(){
+        return this.uiMode.get();
+    }
+    public void setSmallestScreenWidthDp(short sh){
+        this.smallestScreenWidthDp.set(sh);
+    }
+    public short getSmallestScreenWidthDp(){
+        return this.smallestScreenWidthDp.get();
+    }
+    public void setScreenWidthDp(short sh){
+        this.screenWidthDp.set(sh);
+    }
+    public short getScreenWidthDp(){
+        return this.screenWidthDp.get();
+    }
+    public void setScreenHeightDp(short sh){
+        this.screenHeightDp.set(sh);
+    }
+    public short getScreenHeightDp(){
+        return this.screenHeightDp.get();
+    }
+    public void setLocaleScript(byte[] bts){
+        this.localeScript.set(bts);
+    }
+    public void setLocaleScript(char[] chs){
+        byte[] bts=toByteArray(chs, localeScript.size());
+        this.localeScript.set(bts);
+    }
+    public char[] getLocaleScript(){
+        byte[] bts=localeScript.toArray();
+        return toCharArray(bts);
+    }
+    public void setLocaleVariant(byte[] bts){
+        this.localeVariant.set(bts);
+    }
+    public void setLocaleVariant(char[] chs){
+        byte[] bts=toByteArray(chs, localeVariant.size());
+        this.localeVariant.set(bts);
+    }
+    public char[] getLocaleVariant(){
+        return toCharArray(localeVariant.toArray());
+    }
+    public void setScreenLayout2(byte b){
+        this.screenLayout2.set(b);
+    }
+    public byte getScreenLayout2(){
+        return this.screenLayout2.get();
+    }
+    public void setColorMode(byte b){
+        this.colorMode.set(b);
+    }
+    public byte getColorMode(){
+        return this.colorMode.get();
+    }
+    public void setReservedPadding(short sh){
+        this.reservedPadding.set(sh);
+    }
+    public short getReservedPadding(){
+        return this.reservedPadding.get();
+    }
+
+    private void valuesChanged(int val, int old){
+        if(val==old){
+            return;
+        }
+        valuesChanged();
+    }
+    private void valuesChanged(){
+        mQualifiers=null;
+    }
+
+    public String getQualifiers(){
+        if(mQualifiers==null){
+            mQualifiers= ResConfigHelper.toQualifier(this);
+        }
+        return mQualifiers;
+    }
+    @Override
+    public int countBytes(){
+        if(mIsUpdatingSize){
+            return super.countBytes();
+        }
+        return mCurrentSize;
+    }
+
+    private void updateConfigSize(int sz){
+        if(sz==mCurrentSize){
+            return;
+        }
+        mIsUpdatingSize=true;
+        mCurrentSize=sz;
+        localeScript.setSize(4);
+        if(sz<=48){
+            localeVariant.setSize(4);
+            exceedingSize.setSize(0);
+            remainingSize.setSize(0);
+            skipSizeGreater56.setSize(0);
+            mIsUpdatingSize=false;
+            return;
+        }
+        if(sz==KNOWN_CONFIG_BYTES){
+            localeVariant.setSize(8);
+            skipSizeGreater56.setSize(4);
+            exceedingSize.setSize(0);
+            remainingSize.setSize(0);
+            mIsUpdatingSize=false;
+            return;
+        }
+        if(sz<KNOWN_CONFIG_BYTES){
+            int i=sz-KNOWN_CONFIG_BYTES;
+            localeVariant.setSize(i);
+            skipSizeGreater56.setSize(0);
+            exceedingSize.setSize(0);
+            remainingSize.setSize(0);
+            mIsUpdatingSize=false;
+            return;
+        }
+        int ex=sz-KNOWN_CONFIG_BYTES;
+        localeVariant.setSize(8);
+        skipSizeGreater56.setSize(4);
+        exceedingSize.setSize(ex);
+        int rem=sz-64;
+        remainingSize.setSize(rem);
+        mIsUpdatingSize=false;
+    }
+
+    @Override
+    public void onBlockLoaded(BlockReader reader, Block sender) throws IOException {
+        if(sender==configSize){
+            if(configSize.get()!=64){
+                configSize.get();
+            }
+            setConfigSize(configSize.get());
+        }
+    }
+
+    @Override
+    public String toString(){
+        String q=getQualifiers();
+        if(q.trim().length()==0){
+            return "[DEFAULT]";
+        }
+        return q;
+    }
+
+
+    private static char[] unpackLanguageOrRegion(byte b0, byte b1, char base){
+        if ((((b0 >> 7) & 1) == 1)) {
+            int first = b1 & 0x1F;
+            int x=((b1 & 0xE0) >> 5);
+            int y=((b0 & 0x03) << 3);
+            int second = x + y;
+            int third = (b0 & 0x7C) >> 2;
+
+            return new char[] { (char) (first + base), (char) (second + base), (char) (third + base) };
+        }
+        return new char[] { (char) b0, (char) b1 };
+    }
+    private static byte[] packLanguageOrRegion(char[] chs){
+        if(chs==null || chs.length<2){
+            return new byte[2];
+        }
+        if(chs.length==2 || chs.length>3){
+            byte[] result=new byte[2];
+            result[0]=(byte) chs[0];
+            result[1]=(byte) chs[1];
+            return result;
+        }
+        int base=getBase(chs[0]);
+        int first=chs[0] - base;
+        int second=chs[1] - base;
+        int third=chs[2] - base;
+
+        int b1Right=first & 0x1F;
+
+        int b0Left=third;
+        b0Left=b0Left << 2;
+
+        int b1Left=second & 7;
+        b1Left=b1Left<<5;
+
+        int b1=(b1Left | b1Right);
+
+        int b0Right=second >> 3;
+        b0Right=b0Right & 0x3;
+
+        int b0=(b0Left | b0Right);
+        return new byte[] { (byte) b0, (byte) b1 };
+    }
+    private static int getBase(char ch){
+        int result=ch;
+        if(ch>='0' && ch<='9'){
+            result='0';
+        }else if(ch>='a' && ch<='z'){
+            result='a';
+        }else if(ch>='A' && ch<='Z'){
+            result='A';
+        }
+        result=result+32;
+        return result;
+    }
+    private static byte[] toByteArray(char[] chs, int len){
+        byte[] bts=new byte[len];
+        if(chs==null){
+            return bts;
+        }
+        int sz=chs.length;
+        for(int i=0; i<sz;i++){
+            bts[i]= (byte) chs[i];
+        }
+        return bts;
+    }
+    private static char[] toCharArray(byte[] bts){
+        if(isNull(bts)){
+            return null;
+        }
+        int sz=bts.length;
+        char[] chs=new char[sz];
+        for(int i=0; i<sz;i++){
+            chs[i]= (char) bts[i];
+        }
+        return chs;
+    }
+    private static boolean isNull(char[] chs){
+        if(chs==null){
+            return true;
+        }
+        for(int i=0;i<chs.length;i++){
+            if(chs[i]!=0){
+                return false;
+            }
+        }
+        return true;
+    }
+    private static boolean isNull(byte[] bts){
+        if(bts==null){
+            return true;
+        }
+        for(int i=0;i<bts.length;i++){
+            if(bts[i]!=0){
+                return false;
+            }
+        }
+        return true;
+    }
+
+
+    private static final int KNOWN_CONFIG_BYTES = 56;
+
+    private static final int DEFAULT_CONFIG_SIZE = 64;
+
+
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/value/ResConfigHelper.java b/src/main/java/com/reandroid/lib/arsc/value/ResConfigHelper.java
new file mode 100644
index 0000000..df9537a
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/value/ResConfigHelper.java
@@ -0,0 +1,1094 @@
+package com.reandroid.lib.arsc.value;
+
+
+
+import java.util.*;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+public class ResConfigHelper {
+    public static ResConfig fromQualifiers(String qualifiers){
+        ResConfig result=new ResConfig();
+        result.setConfigSize(64);
+        parseQualifiers(result, qualifiers);
+        return result;
+    }
+    static String toQualifier(ResConfig resConfig){
+        StringBuilder builder=new StringBuilder();
+        builder.append(decodeLanguageAndCountry(resConfig));
+        builder.append(decodeOrientation(resConfig));
+        builder.append(decodeScreenLayout(resConfig));
+        builder.append(decodeScreenLayout2(resConfig));
+        builder.append(decodeScreenSize(resConfig));
+        builder.append(decodeDensity(resConfig));
+        builder.append(decodeScreenHeightDp(resConfig));
+        builder.append(decodeSmallestScreenWidthDp(resConfig));
+        builder.append(decodeScreenWidthDp(resConfig));
+        builder.append(decodeNavigation(resConfig));
+        builder.append(decodeUiMode(resConfig));
+        builder.append(decodeTouchscreen(resConfig));
+        builder.append(decodeKeyboard(resConfig));
+        builder.append(decodeInputFlags(resConfig));
+        builder.append(decodeMccMnc(resConfig));
+        builder.append(decodeSdkVersion(resConfig));
+        return sortQualifiers(builder.toString());
+    }
+
+    static void parseQualifiers(ResConfig resConfig, String name){
+        if(resConfig == null || name==null){
+            return;
+        }
+        String[] split=name.split("-");
+        if(isNull(split)){
+            return;
+        }
+        encode(resConfig, split);
+    }
+    public static String sortQualifiers(String qualifiers){
+        if(!qualifiers.startsWith("-")){
+            return qualifiers;
+        }
+        String[] split=qualifiers.split("-");
+        if(isNull(split)){
+            return qualifiers;
+        }
+        int len=split.length;
+        Set<String> qSet=new HashSet<>();
+        for(int i=0; i<len;i++){
+            String q=split[i];
+            if(q!=null){
+                qSet.add(q);
+            }
+        }
+        List<String> qList=new ArrayList<>(qSet);
+        Comparator<String> cmp=new Comparator<String>() {
+            @Override
+            public int compare(String s1, String s2) {
+                return s1.compareTo(s2);
+            }
+        };
+        qList.sort(cmp);
+        StringBuilder builder=new StringBuilder();
+        for(String q:qList){
+            builder.append('-');
+            builder.append(q);
+        }
+        return builder.toString();
+    }
+    private static void encode(ResConfig resConfig, String[] split){
+        encodeDensity(resConfig, split);
+        encodeScreenHeightDp(resConfig, split);
+        encodeScreenWidthDp(resConfig, split);
+        encodeSmallestScreenWidthDp(resConfig, split);
+        encodeNavigation(resConfig, split);
+        encodeInputFlags(resConfig, split);
+        encodeSdkVersion(resConfig, split);
+        encodeKeyboard(resConfig, split);
+        encodeTouchscreen(resConfig, split);
+        encodeUiMode(resConfig, split);
+        encodeOrientation(resConfig, split);
+        encodeScreenLayout(resConfig, split);
+        encodeScreenLayout2(resConfig, split);
+        encodeMcc(resConfig, split);
+        encodeMnc(resConfig, split);
+        encodeScreenSize(resConfig, split);
+        encodeLanguageAndCountry(resConfig, split);
+    }
+
+    private static void encodeLanguageAndCountry(ResConfig resConfig, String[] split){
+        if(split==null){
+            return;
+        }
+        String lang=null;
+        String country=null;
+        for(int i=0;i<split.length;i++){
+            String s=split[i];
+            if(s==null){
+                continue;
+            }
+            if(lang==null){
+                if(isLanguageName(s)){
+                    lang=s;
+                    split[i]=null;
+                }else if(isCountryName(s)){
+                    country=s;
+                    split[i]=null;
+                }
+                continue;
+            }
+            if(country!=null){
+                break;
+            }
+            if(isCountryName(s)){
+                country=s;
+                split[i]=null;
+                break;
+            }
+            break;
+        }
+        if(lang!=null){
+            char[] chs=lang.toCharArray();
+            resConfig.setLanguage(chs);
+        }
+        if(country==null){
+            return;
+        }
+        if(country.length()>2 && country.startsWith("r")){
+            country=country.substring(1);
+        }
+        char[] chs=country.toCharArray();
+        resConfig.setRegion(chs);
+    }
+    private static String decodeLanguageAndCountry(ResConfig resConfig) {
+        StringBuilder builder = new StringBuilder();
+        char[] localeVariant=resConfig.getLocaleVariant();
+        char[] localeScript=resConfig.getLocaleScript();
+        char[] region=resConfig.getRegion();
+        char[] language=resConfig.getLanguage();
+        if (localeVariant == null && localeScript == null && (region[0] != '\00' || language[0] != '\00') &&
+                region.length != 3) {
+            builder.append("-").append(language);
+            if (region[0] != '\00') {
+                builder.append("-r").append(region);
+            }
+        } else {
+            if (language[0] == '\00' && region[0] == '\00') {
+                return builder.toString();
+            }
+            builder.append("-b+");
+            if (language[0] != '\00') {
+                builder.append(language);
+            }
+            if (localeScript != null && localeScript.length == 4) {
+                builder.append("+").append(localeScript);
+            }
+            if ((region.length == 2 || region.length == 3) && region[0] != '\00') {
+                builder.append("+").append(region);
+            }
+            if (localeVariant != null && localeVariant.length >= 5) {
+                builder.append("+").append(toUpper(localeVariant));
+            }
+        }
+        return builder.toString();
+    }
+    private static void encodeNavigation(ResConfig resConfig, String[] split){
+        byte navigation=0;
+        for(int i=0;i<split.length;i++){
+            String s=split[i];
+            if(s==null){
+                continue;
+            }
+            switch (s) {
+                case "nonav":
+                    navigation = NAVIGATION_NONAV;
+                    break;
+                case "dpad":
+                    navigation = NAVIGATION_DPAD;
+                    break;
+                case "trackball":
+                    navigation = NAVIGATION_TRACKBALL;
+                    break;
+                case "wheel":
+                    navigation = NAVIGATION_WHEEL;
+                    break;
+                default:
+                    continue;
+            }
+            split[i]=null;
+            break;
+        }
+        resConfig.setNavigation(navigation);
+    }
+    private static String decodeNavigation(ResConfig resConfig){
+        StringBuilder ret=new StringBuilder();
+        switch (resConfig.getNavigation()) {
+            case NAVIGATION_NONAV:
+                ret.append("-nonav");
+                break;
+            case NAVIGATION_DPAD:
+                ret.append("-dpad");
+                break;
+            case NAVIGATION_TRACKBALL:
+                ret.append("-trackball");
+                break;
+            case NAVIGATION_WHEEL:
+                ret.append("-wheel");
+                break;
+        }
+        return ret.toString();
+    }
+    private static void encodeInputFlags(ResConfig resConfig, String[] split){
+        int inputFlags=0;
+        for(int i=0;i<split.length;i++){
+            String s=split[i];
+            if(s==null){
+                continue;
+            }
+            int val;
+            switch (s) {
+                case "keysexposed":
+                    val = (KEYSHIDDEN_NO);
+                    break;
+                case "keyshidden":
+                    val = (KEYSHIDDEN_YES);
+                    break;
+                case "keyssoft":
+                    val = (KEYSHIDDEN_SOFT);
+                    break;
+                case "navexposed":
+                    val = (NAVHIDDEN_NO);
+                    break;
+                case "navhidden":
+                    val = (NAVHIDDEN_YES);
+                    break;
+                default:
+                    continue;
+            }
+            inputFlags=(inputFlags | val);
+            split[i]=null;
+        }
+        resConfig.setInputFlags((byte)inputFlags);
+    }
+    private static String decodeInputFlags(ResConfig resConfig){
+        StringBuilder ret=new StringBuilder();
+        int inputFlags=resConfig.getInputFlags();
+        switch (inputFlags & MASK_KEYSHIDDEN) {
+            case KEYSHIDDEN_NO:
+                ret.append("-keysexposed");
+                break;
+            case KEYSHIDDEN_YES:
+                ret.append("-keyshidden");
+                break;
+            case KEYSHIDDEN_SOFT:
+                ret.append("-keyssoft");
+                break;
+        }
+        switch (inputFlags & MASK_NAVHIDDEN) {
+            case NAVHIDDEN_NO:
+                ret.append("-navexposed");
+                break;
+            case NAVHIDDEN_YES:
+                ret.append("-navhidden");
+                break;
+        }
+        return ret.toString();
+    }
+    private static void encodeKeyboard(ResConfig resConfig, String[] split){
+        byte keyboard=0;
+        for(int i=0;i<split.length;i++){
+            String s=split[i];
+            if(s==null){
+                continue;
+            }
+            switch (s) {
+                case "nokeys":
+                    keyboard = KEYBOARD_NOKEYS;
+                    break;
+                case "qwerty":
+                    keyboard = KEYBOARD_QWERTY;
+                    break;
+                case "12key":
+                    keyboard = KEYBOARD_12KEY;
+                    break;
+                default:
+                    continue;
+            }
+            split[i]=null;
+            break;
+        }
+        resConfig.setKeyboard(keyboard);
+    }
+    private static String decodeKeyboard(ResConfig resConfig){
+        StringBuilder ret=new StringBuilder();
+        switch (resConfig.getKeyboard()) {
+            case KEYBOARD_NOKEYS:
+                ret.append("-nokeys");
+                break;
+            case KEYBOARD_QWERTY:
+                ret.append("-qwerty");
+                break;
+            case KEYBOARD_12KEY:
+                ret.append("-12key");
+                break;
+        }
+        return ret.toString();
+    }
+    private static void encodeDensity(ResConfig resConfig, String[] split){
+        int density=0;
+        for(int i=0;i<split.length;i++){
+            String s=split[i];
+            if(s==null){
+                continue;
+            }
+            Matcher matcher=PATTERN_DENSITY.matcher(s);
+            if(!matcher.find()){
+                continue;
+            }
+            String d=matcher.group("A");
+            if("l".equals(d)){
+                density = DENSITY_LOW;
+            }else if("m".equals(d)){
+                density = DENSITY_MEDIUM;
+            }else if("h".equals(d)){
+                density = DENSITY_HIGH;
+            }else if("tv".equals(d)){
+                density = DENSITY_TV;
+            }else if("xh".equals(d)){
+                density = DENSITY_XHIGH;
+            }else if("xxh".equals(d)){
+                density = DENSITY_XXHIGH;
+            }else if("xxxh".equals(d)){
+                density = DENSITY_XXXHIGH;
+            }else if("any".equals(d)){
+                density = DENSITY_ANY;
+            }else if("no".equals(d)){
+                density = DENSITY_NONE;
+            }else if(isDecimal(d)){
+                density = Integer.parseInt(d);
+            }else {
+                continue;
+            }
+            split[i]=null;
+            break;
+        }
+        resConfig.setDensity((short) density);
+    }
+    private static String decodeDensity(ResConfig resConfig){
+        StringBuilder ret=new StringBuilder();
+        int density=resConfig.getDensity();
+        switch (density) {
+            case DENSITY_DEFAULT:
+                break;
+            case DENSITY_LOW:
+                ret.append("-ldpi");
+                break;
+            case DENSITY_MEDIUM:
+                ret.append("-mdpi");
+                break;
+            case DENSITY_HIGH:
+                ret.append("-hdpi");
+                break;
+            case DENSITY_TV:
+                ret.append("-tvdpi");
+                break;
+            case DENSITY_XHIGH:
+                ret.append("-xhdpi");
+                break;
+            case DENSITY_XXHIGH:
+                ret.append("-xxhdpi");
+                break;
+            case DENSITY_XXXHIGH:
+                ret.append("-xxxhdpi");
+                break;
+            case DENSITY_ANY:
+                ret.append("-anydpi");
+                break;
+            case DENSITY_NONE:
+                ret.append("-nodpi");
+                break;
+            default:
+                ret.append('-').append(density).append("dpi");
+        }
+        return ret.toString();
+    }
+    private static void encodeTouchscreen(ResConfig resConfig, String[] split){
+        byte touchscreen=0;
+        for(int i=0;i<split.length;i++){
+            String s=split[i];
+            if(s==null){
+                continue;
+            }
+            switch (s) {
+                case "notouch":
+                    touchscreen = TOUCHSCREEN_NOTOUCH;
+                    break;
+                case "stylus":
+                    touchscreen = TOUCHSCREEN_STYLUS;
+                    break;
+                case "finger":
+                    touchscreen = TOUCHSCREEN_FINGER;
+                    break;
+                default:
+                    continue;
+            }
+            split[i]=null;
+            break;
+        }
+        resConfig.setTouchscreen(touchscreen);
+    }
+    private static String decodeTouchscreen(ResConfig resConfig){
+        StringBuilder ret=new StringBuilder();
+        byte touchscreen=resConfig.getTouchscreen();
+        switch (touchscreen) {
+            case TOUCHSCREEN_NOTOUCH:
+                ret.append("-notouch");
+                break;
+            case TOUCHSCREEN_STYLUS:
+                ret.append("-stylus");
+                break;
+            case TOUCHSCREEN_FINGER:
+                ret.append("-finger");
+                break;
+        }
+        return ret.toString();
+    }
+    private static void encodeUiMode(ResConfig resConfig, String[] split){
+        int uiMode=0;
+        for(int i=0;i<split.length;i++){
+            String s=split[i];
+            if(s==null){
+                continue;
+            }
+            int val;
+            switch (s) {
+                case "car":
+                    val = (UI_MODE_TYPE_CAR);
+                    break;
+                case "desk":
+                    val = (UI_MODE_TYPE_DESK);
+                    break;
+                case "television":
+                    val = (UI_MODE_TYPE_TELEVISION);
+                    break;
+                case "smallui":
+                    val = (UI_MODE_TYPE_SMALLUI);
+                    break;
+                case "mediumui":
+                    val = (UI_MODE_TYPE_MEDIUMUI);
+                    break;
+                case "largeui":
+                    val = (UI_MODE_TYPE_LARGEUI);
+                    break;
+                case "godzillaui":
+                    val = (UI_MODE_TYPE_GODZILLAUI);
+                    break;
+                case "hugeui":
+                    val = (UI_MODE_TYPE_HUGEUI);
+                    break;
+                case "appliance":
+                    val = (UI_MODE_TYPE_APPLIANCE);
+                    break;
+                case "watch":
+                    val = (UI_MODE_TYPE_WATCH);
+                    break;
+                case "vrheadset":
+                    val = (UI_MODE_TYPE_VR_HEADSET);
+                    break;
+                default:
+                    continue;
+            }
+            uiMode=(uiMode | val);
+            split[i]=null;
+        }
+        for(int i=0;i<split.length;i++){
+            String s=split[i];
+            if(s==null){
+                continue;
+            }
+            int val;
+            if("night".equals(s)){
+                val = (UI_MODE_NIGHT_YES);
+            }else if("notnight".equals(s)){
+                val = (UI_MODE_NIGHT_NO);
+            }else {
+                continue;
+            }
+            uiMode=(uiMode | val);
+            split[i]=null;
+        }
+        resConfig.setUiMode((byte)uiMode);
+    }
+    private static String decodeUiMode(ResConfig resConfig){
+        StringBuilder ret=new StringBuilder();
+        byte uiMode=resConfig.getUiMode();
+        switch (uiMode & MASK_UI_MODE_TYPE) {
+            case UI_MODE_TYPE_CAR:
+                ret.append("-car");
+                break;
+            case UI_MODE_TYPE_DESK:
+                ret.append("-desk");
+                break;
+            case UI_MODE_TYPE_TELEVISION:
+                ret.append("-television");
+                break;
+            case UI_MODE_TYPE_SMALLUI:
+                ret.append("-smallui");
+                break;
+            case UI_MODE_TYPE_MEDIUMUI:
+                ret.append("-mediumui");
+                break;
+            case UI_MODE_TYPE_LARGEUI:
+                ret.append("-largeui");
+                break;
+            case UI_MODE_TYPE_GODZILLAUI:
+                ret.append("-godzillaui");
+                break;
+            case UI_MODE_TYPE_HUGEUI:
+                ret.append("-hugeui");
+                break;
+            case UI_MODE_TYPE_APPLIANCE:
+                ret.append("-appliance");
+                break;
+            case UI_MODE_TYPE_WATCH:
+                ret.append("-watch");
+                break;
+            case UI_MODE_TYPE_VR_HEADSET:
+                ret.append("-vrheadset");
+                break;
+        }
+        switch (uiMode & MASK_UI_MODE_NIGHT) {
+            case UI_MODE_NIGHT_YES:
+                ret.append("-night");
+                break;
+            case UI_MODE_NIGHT_NO:
+                ret.append("-notnight");
+                break;
+        }
+        return ret.toString();
+    }
+    private static void encodeOrientation(ResConfig resConfig, String[] split){
+        byte orientation=0;
+        for(int i=0;i<split.length;i++){
+            String s=split[i];
+            if(s==null){
+                continue;
+            }
+            if("port".equals(s)){
+                orientation = ORIENTATION_PORT;
+            }else if("land".equals(s)){
+                orientation = ORIENTATION_LAND;
+            }else {
+                continue;
+            }
+            split[i]=null;
+            break;
+        }
+        resConfig.setOrientation(orientation);
+    }
+    private static String decodeOrientation(ResConfig resConfig){
+        StringBuilder ret=new StringBuilder();
+        byte orientation=resConfig.getOrientation();
+        switch (orientation) {
+            case ORIENTATION_PORT:
+                ret.append("-port");
+                break;
+            case ORIENTATION_LAND:
+                ret.append("-land");
+                break;
+            case ORIENTATION_SQUARE:
+                ret.append("-square");
+                break;
+        }
+        return ret.toString();
+    }
+    private static void encodeScreenLayout(ResConfig resConfig, String[] split){
+        int screenLayout=0;
+        for(int i=0;i<split.length;i++){
+            String s=split[i];
+            if(s==null){
+                continue;
+            }
+            int val;
+            switch (s) {
+                case "ldrtl":
+                    val = (SCREENLAYOUT_LAYOUTDIR_RTL);
+                    break;
+                case "ldltr":
+                    val = (SCREENLAYOUT_LAYOUTDIR_LTR);
+                    break;
+                case "small":
+                    val = (SCREENSIZE_SMALL);
+                    break;
+                case "normal":
+                    val = (SCREENSIZE_NORMAL);
+                    break;
+                case "large":
+                    val = (SCREENSIZE_LARGE);
+                    break;
+                case "xlarge":
+                    val = (SCREENSIZE_XLARGE);
+                    break;
+                case "long":
+                    val = (SCREENLONG_YES);
+                    break;
+                case "notlong":
+                    val = (SCREENLONG_NO);
+                    break;
+                default:
+                    continue;
+            }
+            screenLayout = (screenLayout | val);
+            split[i]=null;
+        }
+        resConfig.setScreenLayout((byte) screenLayout);
+    }
+    private static String decodeScreenLayout(ResConfig resConfig){
+        StringBuilder ret=new StringBuilder();
+        byte screenLayout=resConfig.getScreenLayout();
+        switch (screenLayout & MASK_LAYOUTDIR) {
+            case SCREENLAYOUT_LAYOUTDIR_RTL:
+                ret.append("-ldrtl");
+                break;
+            case SCREENLAYOUT_LAYOUTDIR_LTR:
+                ret.append("-ldltr");
+        }
+        switch (screenLayout & MASK_SCREENSIZE) {
+            case SCREENSIZE_SMALL:
+                ret.append("-small");
+                break;
+            case SCREENSIZE_NORMAL:
+                ret.append("-normal");
+                break;
+            case SCREENSIZE_LARGE:
+                ret.append("-large");
+                break;
+            case SCREENSIZE_XLARGE:
+                ret.append("-xlarge");
+                break;
+        }
+        switch (screenLayout & MASK_SCREENLONG) {
+            case SCREENLONG_YES:
+                ret.append("-long");
+                break;
+            case SCREENLONG_NO:
+                ret.append("-notlong");
+                break;
+        }
+        return ret.toString();
+    }
+    private static void encodeScreenLayout2(ResConfig resConfig, String[] split){
+        int screenLayout2=0;
+        for(int i=0;i<split.length;i++){
+            String s=split[i];
+            if(s==null){
+                continue;
+            }
+            int val;
+            if("round".equals(s)){
+                val = (SCREENLAYOUT_ROUND_YES);
+            }else if("notround".equals(s)){
+                val = (SCREENLAYOUT_ROUND_NO);
+            }else {
+                continue;
+            }
+            screenLayout2 = (screenLayout2 | val);
+            split[i]=null;
+            break;
+        }
+        resConfig.setScreenLayout2((byte) screenLayout2);
+    }
+    private static String decodeScreenLayout2(ResConfig resConfig){
+        StringBuilder ret=new StringBuilder();
+        switch (resConfig.getScreenLayout2() & MASK_SCREENROUND) {
+            case SCREENLAYOUT_ROUND_NO:
+                ret.append("-notround");
+                break;
+            case SCREENLAYOUT_ROUND_YES:
+                ret.append("-round");
+                break;
+        }
+        return ret.toString();
+    }
+    private static void encodeMcc(ResConfig resConfig, String[] split){
+        short sh=(short)0;
+        for(int i=0;i<split.length;i++){
+            String s=split[i];
+            if(s==null){
+                continue;
+            }
+            Matcher matcher=PATTERN_MCC_MNC.matcher(s);
+            if(!matcher.find()){
+                continue;
+            }
+            String mccMnc=matcher.group("A");
+            int val=Integer.parseInt(matcher.group("B"));
+            if(val==0){
+                val=-1;
+            }
+            sh=(short)val;
+            if(!"mcc".equals(mccMnc)){
+                continue;
+            }
+            split[i]=null;
+            break;
+        }
+        resConfig.setMcc(sh);
+    }
+    private static void encodeMnc(ResConfig resConfig, String[] split){
+        short sh=(short)0;
+        for(int i=0;i<split.length;i++){
+            String s=split[i];
+            if(s==null){
+                continue;
+            }
+            Matcher matcher=PATTERN_MCC_MNC.matcher(s);
+            if(!matcher.find()){
+                continue;
+            }
+            String mccMnc=matcher.group("A");
+            int val=Integer.parseInt(matcher.group("B"));
+            sh=(short)val;
+            if(!"mnc".equals(mccMnc)){
+                continue;
+            }
+            split[i]=null;
+            break;
+        }
+        resConfig.setMnc(sh);
+    }
+    private static String decodeMccMnc(ResConfig resConfig){
+        short mcc=resConfig.getMcc();
+        short mnc=resConfig.getMnc();
+        int size=resConfig.getConfigSize();
+        StringBuilder ret = new StringBuilder();
+        if (mcc != 0) {
+            ret.append("-mcc").append(String.format("%03d", mcc));
+            if (mnc != -1) {
+                if (mnc != 0) {
+                    ret.append("-mnc");
+                    if (size <= 32) {
+                        if (mnc > 0 && mnc < 10) {
+                            ret.append(String.format("%02d", mnc));
+                        } else {
+                            ret.append(String.format("%03d", mnc));
+                        }
+                    } else {
+                        ret.append(mnc);
+                    }
+                }
+            } else {
+                ret.append("-mnc00");
+            }
+        } else {
+            if (mnc != 0) {
+                ret.append("-mnc").append(mnc);
+            }
+        }
+        return ret.toString();
+    }
+    private static void encodeSmallestScreenWidthDp(ResConfig resConfig, String[] split){
+        int val=0;
+        for(int i=0;i<split.length;i++){
+            String s=split[i];
+            if(s==null){
+                continue;
+            }
+            Matcher matcher=PATTERN_SCREEN_SMALLEST_DP.matcher(s);
+            if(!matcher.find()){
+                continue;
+            }
+            String pre=matcher.group("A");
+            if(!pre.equals("sw")){
+                continue;
+            }
+            val=Integer.parseInt(matcher.group("B"));
+            split[i]=null;
+            break;
+        }
+        resConfig.setSmallestScreenWidthDp((short)val);
+    }
+    private static String decodeSmallestScreenWidthDp(ResConfig resConfig){
+        int smallestScreenWidthDp=resConfig.getSmallestScreenWidthDp();
+        StringBuilder builder=new StringBuilder();
+        if(smallestScreenWidthDp!=0){
+            builder.append("-sw");
+            builder.append(smallestScreenWidthDp);
+            builder.append("dp");
+        }
+        return builder.toString();
+    }
+    private static void encodeScreenHeightDp(ResConfig resConfig, String[] split){
+        int val=0;
+        for(int i=0;i<split.length;i++){
+            String s=split[i];
+            if(s==null){
+                continue;
+            }
+            Matcher matcher=PATTERN_SCREEN_DP.matcher(s);
+            if(!matcher.find()){
+                continue;
+            }
+            String pre=matcher.group("A");
+            if(!pre.equals("h")){
+                continue;
+            }
+            val=Integer.parseInt(matcher.group("B"));
+            split[i]=null;
+            break;
+        }
+        resConfig.setScreenHeightDp((short)val);
+    }
+    private static String decodeScreenHeightDp(ResConfig resConfig){
+        int screenHeightDp=resConfig.getScreenHeightDp();
+        StringBuilder builder=new StringBuilder();
+        if(screenHeightDp!=0){
+            builder.append("-h");
+            builder.append(screenHeightDp);
+            builder.append("dp");
+        }
+        return builder.toString();
+    }
+    private static void encodeScreenWidthDp(ResConfig resConfig, String[] split){
+        int val=0;
+        for(int i=0;i<split.length;i++){
+            String s=split[i];
+            if(s==null){
+                continue;
+            }
+            Matcher matcher=PATTERN_SCREEN_DP.matcher(s);
+            if(!matcher.find()){
+                continue;
+            }
+            String pre=matcher.group("A");
+            if(!pre.equals("w")){
+                continue;
+            }
+            val=Integer.parseInt(matcher.group("B"));
+            split[i]=null;
+            break;
+        }
+        resConfig.setScreenWidthDp((short)val);
+    }
+    private static String decodeScreenWidthDp(ResConfig resConfig){
+        int screenWidthDp=resConfig.getScreenWidthDp();
+        StringBuilder builder=new StringBuilder();
+        if(screenWidthDp!=0){
+            builder.append("-w");
+            builder.append(screenWidthDp);
+            builder.append("dp");
+        }
+        return builder.toString();
+    }
+    private static void encodeSdkVersion(ResConfig resConfig, String[] split){
+        int val=0;
+        for(int i=0;i<split.length;i++){
+            String s=split[i];
+            if(s==null){
+                continue;
+            }
+            Matcher matcher=PATTERN_SDK_VERSION.matcher(s);
+            if(!matcher.find()){
+                continue;
+            }
+            val=Integer.parseInt(matcher.group("A"));
+            split[i]=null;
+            break;
+        }
+        resConfig.setSdkVersion((short)val);
+    }
+    private static String decodeSdkVersion(ResConfig resConfig){
+        int sdkVersion=resConfig.getSdkVersion();
+        StringBuilder builder=new StringBuilder();
+        if(sdkVersion!=0){
+            builder.append("-v");
+            builder.append(sdkVersion);
+        }
+        return builder.toString();
+    }
+    private static String decodeScreenSize(ResConfig resConfig){
+        short width=resConfig.getScreenWidth();
+        short height=resConfig.getScreenHeight();
+        if(width==0||height==0){
+            return "";
+        }
+        if (width > height) {
+            return String.format("%dx%d", width, height);
+        } else {
+            return String.format("%dx%d", height, width);
+        }
+    }
+    private static void encodeScreenSize(ResConfig resConfig, String[] split){
+        for(int i=0;i<split.length;i++){
+            String s=split[i];
+            if(s==null){
+                continue;
+            }
+            Matcher matcher=PATTERN_SCREEN_SIZE.matcher(s);
+            if(!matcher.find()){
+                continue;
+            }
+            int a=Integer.parseInt(matcher.group("A"));
+            int b=Integer.parseInt(matcher.group("B"));
+            short w;
+            short h;
+            if(a>b){
+                w=(short)a;
+                h=(short)b;
+            }else {
+                w=(short)b;
+                h=(short)a;
+            }
+            resConfig.setScreenSize(w, h);
+            split[i]=null;
+            break;
+        }
+    }
+
+    private static boolean isLanguageName(String str){
+        if(str==null){
+            return false;
+        }
+        Matcher matcher=PATTERN_LANG_NAME.matcher(str);
+        return matcher.find();
+    }
+    private static boolean isCountryName(String str){
+        if(str==null){
+            return false;
+        }
+        Matcher matcher=PATTERN_COUNTRY_NAME.matcher(str);
+        return matcher.find();
+    }
+    private static char[] toUpper(char[] chs){
+        for(int i=0;i<chs.length;i++){
+            chs[i]=Character.toUpperCase(chs[i]);
+        }
+        return chs;
+    }
+    private static boolean isNull(String[] split){
+        if(split==null){
+            return true;
+        }
+        if(split.length==0){
+            return true;
+        }
+        boolean result=true;
+        for(int i=0;i<split.length;i++){
+            String s=split[i];
+            if(s==null){
+                continue;
+            }
+            s=s.trim();
+            if(s.length()==0){
+                split[i]=null;
+                continue;
+            }
+            result=false;
+        }
+        return result;
+    }
+    private static boolean isDecimal(String str){
+        if(str==null){
+            return false;
+        }
+        Matcher matcher=PATTERN_NUMBER.matcher(str);
+        return matcher.find();
+    }
+
+    private static final Pattern PATTERN_SDK_VERSION=Pattern.compile("^-?v(?<A>[0-9]+)$");
+
+    private static final Pattern PATTERN_SCREEN_DP=Pattern.compile("^(?<A>[wh])(?<B>[0-9]+)dp$");
+
+    private static final Pattern PATTERN_SCREEN_SMALLEST_DP=Pattern.compile("^(?<A>(sw)|(sh))(?<B>[0-9]+)dp$");
+
+    private static final Pattern PATTERN_LANG_NAME=Pattern.compile("^[a-z]{2}$");
+
+    private static final Pattern PATTERN_COUNTRY_NAME=Pattern.compile("^[a-zA-Z]{2,3}$");
+
+    private static final Pattern PATTERN_MCC_MNC=Pattern.compile("^(?<A>m[cn]c)(?<B>[0-9]{2,3})$");
+
+    private static final Pattern PATTERN_DENSITY=Pattern.compile("^(?<A>[^\\s]+)dpi$");
+
+    private static final Pattern PATTERN_NUMBER=Pattern.compile("^[0-9]+$");
+
+    private static final Pattern PATTERN_SCREEN_SIZE=Pattern.compile("^-?(?<A>[0-9]+)x(?<B>[0-9]+)$");
+
+
+    private final static short MASK_LAYOUTDIR = 0xc0;
+    private final static short SCREENLAYOUT_LAYOUTDIR_ANY = 0x00;
+    private final static short SCREENLAYOUT_LAYOUTDIR_LTR = 0x40;
+    private final static short SCREENLAYOUT_LAYOUTDIR_RTL = 0x80;
+    private final static short SCREENLAYOUT_LAYOUTDIR_SHIFT = 0x06;
+
+
+    private final static byte MASK_SCREENSIZE = 0x0f;
+    private final static byte SCREENSIZE_ANY = 0x00;
+    private final static byte SCREENSIZE_SMALL = 0x01;
+    private final static byte SCREENSIZE_NORMAL = 0x02;
+    private final static byte SCREENSIZE_LARGE = 0x03;
+    private final static byte SCREENSIZE_XLARGE = 0x04;
+
+    private final static byte MASK_SCREENLONG = 0x30;
+    private final static byte SCREENLONG_ANY = 0x00;
+    private final static byte SCREENLONG_NO = 0x10;
+    private final static byte SCREENLONG_YES = 0x20;
+
+
+    private final static short MASK_SCREENROUND = 0x03;
+    private final static short SCREENLAYOUT_ROUND_ANY = 0;
+    private final static short SCREENLAYOUT_ROUND_NO = 0x1;
+    private final static short SCREENLAYOUT_ROUND_YES = 0x2;
+
+
+    private final static byte ORIENTATION_ANY = 0;
+    private final static byte ORIENTATION_PORT = 1;
+    private final static byte ORIENTATION_LAND = 2;
+    private final static byte ORIENTATION_SQUARE = 3;
+
+    private final static byte MASK_UI_MODE_TYPE = 0x0f;
+    private final static byte UI_MODE_TYPE_ANY = 0x00;
+    private final static byte UI_MODE_TYPE_NORMAL = 0x01;
+    private final static byte UI_MODE_TYPE_DESK = 0x02;
+    private final static byte UI_MODE_TYPE_CAR = 0x03;
+    private final static byte UI_MODE_TYPE_TELEVISION = 0x04;
+    private final static byte UI_MODE_TYPE_APPLIANCE = 0x05;
+    private final static byte UI_MODE_TYPE_WATCH = 0x06;
+    private final static byte UI_MODE_TYPE_VR_HEADSET = 0x07;
+
+
+    private final static byte MASK_UI_MODE_NIGHT = 0x30;
+    private final static byte UI_MODE_NIGHT_ANY = 0x00;
+    private final static byte UI_MODE_NIGHT_NO = 0x10;
+    private final static byte UI_MODE_NIGHT_YES = 0x20;
+
+
+    private final static byte UI_MODE_TYPE_GODZILLAUI = 0x0b;
+    private final static byte UI_MODE_TYPE_SMALLUI = 0x0c;
+    private final static byte UI_MODE_TYPE_MEDIUMUI = 0x0d;
+    private final static byte UI_MODE_TYPE_LARGEUI = 0x0e;
+    private final static byte UI_MODE_TYPE_HUGEUI = 0x0f;
+
+
+    private final static byte TOUCHSCREEN_ANY = 0;
+    private final static byte TOUCHSCREEN_NOTOUCH = 1;
+    private final static byte TOUCHSCREEN_STYLUS = 2;
+    private final static byte TOUCHSCREEN_FINGER = 3;
+
+    private final static byte MASK_KEYSHIDDEN = 0x3;
+    private final static byte KEYSHIDDEN_ANY = 0x0;
+    private final static byte KEYSHIDDEN_NO = 0x1;
+    private final static byte KEYSHIDDEN_YES = 0x2;
+    private final static byte KEYSHIDDEN_SOFT = 0x3;
+
+    private final static byte KEYBOARD_ANY = 0;
+    private final static byte KEYBOARD_NOKEYS = 1;
+    private final static byte KEYBOARD_QWERTY = 2;
+    private final static byte KEYBOARD_12KEY = 3;
+
+    private final static byte MASK_NAVHIDDEN = 0xc;
+    private final static byte NAVHIDDEN_ANY = 0x0;
+    private final static byte NAVHIDDEN_NO = 0x4;
+    private final static byte NAVHIDDEN_YES = 0x8;
+
+
+    private final static byte NAVIGATION_ANY = 0;
+    private final static byte NAVIGATION_NONAV = 1;
+    private final static byte NAVIGATION_DPAD = 2;
+    private final static byte NAVIGATION_TRACKBALL = 3;
+    private final static byte NAVIGATION_WHEEL = 4;
+
+
+    private final static int DENSITY_DEFAULT = 0;
+    private final static int DENSITY_LOW = 120;
+    private final static int DENSITY_MEDIUM = 160;
+    private final static int DENSITY_400 = 190;
+    private final static int DENSITY_TV = 213;
+    private final static int DENSITY_HIGH = 240;
+    private final static int DENSITY_XHIGH = 320;
+    private final static int DENSITY_XXHIGH = 480;
+    private final static int DENSITY_XXXHIGH = 640;
+    private final static int DENSITY_ANY = -2;
+    private final static int DENSITY_NONE = -1;
+
+
+}
+
diff --git a/src/main/java/com/reandroid/lib/arsc/value/ResValueBag.java b/src/main/java/com/reandroid/lib/arsc/value/ResValueBag.java
new file mode 100644
index 0000000..2bb257a
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/value/ResValueBag.java
@@ -0,0 +1,165 @@
+package com.reandroid.lib.arsc.value;
+
+import com.reandroid.lib.arsc.array.ResValueBagItemArray;
+import com.reandroid.lib.arsc.base.Block;
+import com.reandroid.lib.arsc.base.BlockCounter;
+import com.reandroid.lib.arsc.io.BlockReader;
+import com.reandroid.lib.arsc.item.IntegerItem;
+
+import java.io.IOException;
+import java.io.OutputStream;
+import java.util.List;
+
+public class ResValueBag extends BaseResValue {
+
+    private final IntegerItem mParentId;
+    private final IntegerItem mCount;
+    private final ResValueBagItemArray mResValueBagItemArray;
+    public ResValueBag(){
+        super(0);
+        mParentId =new IntegerItem();
+        mCount=new IntegerItem();
+        mResValueBagItemArray=new ResValueBagItemArray();
+
+        mParentId.setParent(this);
+        mParentId.setIndex(0);
+        mCount.setParent(this);
+        mCount.setIndex(1);
+        mResValueBagItemArray.setParent(this);
+        mResValueBagItemArray.setIndex(2);
+    }
+    public ResValueBagItemArray getResValueBagItemArray(){
+        return mResValueBagItemArray;
+    }
+
+    public int getParentId(){
+        return mParentId.get();
+    }
+    public void setParentId(int id){
+        mParentId.set(id);
+    }
+    public int getCount(){
+        return mCount.get();
+    }
+    public void setCount(int count){
+        if(count<0){
+            count=0;
+        }
+        mCount.set(count);
+    }
+
+    @Override
+    public byte[] getBytes() {
+        byte[] results = mParentId.getBytes();
+        results=addBytes(results, mCount.getBytes());
+        results=addBytes(results, mResValueBagItemArray.getBytes());
+        return results;
+    }
+    @Override
+    public int countBytes() {
+        int result;
+        result = mParentId.countBytes();
+        result+=mCount.countBytes();
+        result+=mResValueBagItemArray.countBytes();
+        return result;
+    }
+    @Override
+    public void onCountUpTo(BlockCounter counter) {
+        if(countSubChildes(counter, mParentId)){
+            return;
+        }
+        if(countSubChildes(counter, mCount)){
+            return;
+        }
+        countSubChildes(counter, mResValueBagItemArray);
+    }
+    private boolean countSubChildes(BlockCounter counter, Block child){
+        if(counter.FOUND){
+            return true;
+        }
+        if(counter.END==child){
+            counter.FOUND=true;
+            return true;
+        }
+        int c=child.countBytes();
+        counter.addCount(c);
+        return false;
+    }
+
+    private void refreshCount(){
+        setCount(getResValueBagItemArray().childesCount());
+    }
+    @Override
+    protected int onWriteBytes(OutputStream writer) throws IOException {
+        if(isNull()){
+            return 0;
+        }
+        refreshCount();
+        int result;
+        result=mParentId.writeBytes(writer);
+        result+=mCount.writeBytes(writer);
+        result+=mResValueBagItemArray.writeBytes(writer);
+        return result;
+    }
+    @Override
+    public void onReadBytes(BlockReader reader) throws IOException{
+        mResValueBagItemArray.clearChildes();
+        mParentId.readBytes(reader);
+        mCount.readBytes(reader);
+        mResValueBagItemArray.setChildesCount(mCount.get());
+        mResValueBagItemArray.readBytes(reader);
+    }
+
+    @Override
+    public String toString(){
+        StringBuilder builder=new StringBuilder();
+        builder.append(getClass().getSimpleName());
+        builder.append(": parent=");
+        builder.append(String.format("0x%08x", getParentId()));
+        builder.append(", count=");
+        builder.append(getCount());
+        return builder.toString();
+    }
+
+
+    // NOT Applicable
+    @Override
+    void setHeaderSize(short size) {
+    }
+    // NOT Applicable
+    @Override
+    short getHeaderSize() {
+        return HEADER_COMPLEX;
+    }
+    // NOT Applicable
+    @Override
+    void setReserved(byte reserved) {
+    }
+    // NOT Applicable
+    @Override
+    byte getReserved() {
+        return 0;
+    }
+    // NOT Applicable
+    @Override
+    public void setType(byte type) {
+    }
+
+    // NOT Applicable
+    @Override
+    public byte getType() {
+        return 0;
+    }
+
+    // NOT Applicable
+    @Override
+    public int getData() {
+        return 0;
+    }
+
+    // NOT Applicable
+    @Override
+    public void setData(int data) { }
+
+    private final static short HEADER_COMPLEX=0x0010;
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/value/ResValueBagItem.java b/src/main/java/com/reandroid/lib/arsc/value/ResValueBagItem.java
new file mode 100644
index 0000000..732f0b3
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/value/ResValueBagItem.java
@@ -0,0 +1,80 @@
+package com.reandroid.lib.arsc.value;
+
+public class ResValueBagItem extends BaseResValue {
+
+    public ResValueBagItem() {
+        super(BYTES_COUNT);
+        setHeaderSize(BYTES_SIZE);
+    }
+
+    @Override
+    void setHeaderSize(short size) {
+        setShort(OFFSET_SIZE, size);
+    }
+    @Override
+    short getHeaderSize() {
+        return getShort(OFFSET_SIZE);
+    }
+    @Override
+    void setReserved(byte reserved) {
+        setByte(OFFSET_RESERVED, reserved);
+    }
+    @Override
+    byte getReserved() {
+        return getByte(OFFSET_RESERVED);
+    }
+
+
+    public void setId(int id){
+        setInt(OFFSET_ID, id);
+    }
+    public int getId(){
+        return getInt(OFFSET_ID);
+    }
+    @Override
+    public void setType(byte type){
+        setByte(OFFSET_TYPE, type);
+    }
+    @Override
+    public byte getType(){
+        return getByte(OFFSET_TYPE);
+    }
+    @Override
+    public int getData(){
+        return getInt(OFFSET_DATA);
+    }
+    @Override
+    public void setData(int data){
+        setInt(OFFSET_DATA, data);
+    }
+
+    @Override
+    public String toString(){
+        StringBuilder builder=new StringBuilder();
+        builder.append(getClass().getSimpleName());
+        builder.append(" type=");
+        ValueType vt=getValueType();
+        if(vt!=null){
+            builder.append(vt.name());
+        }else {
+            builder.append("Unknown");
+        }
+        builder.append('(');
+        builder.append(String.format("0x%02x", getType()));
+        builder.append(") id=");
+        builder.append(String.format("0x%08x", getId()));
+        builder.append(", data=");
+        builder.append(String.format("0x%08x", getData()));
+        return builder.toString();
+    }
+    private static final int OFFSET_ID=0;
+    private static final int OFFSET_SIZE=4;
+    private static final int OFFSET_RESERVED=6;
+    private static final int OFFSET_TYPE=7;
+    private static final int OFFSET_DATA=8;
+
+    private static final int BYTES_COUNT=12;
+
+    private static final short BYTES_SIZE=0x08;
+
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/value/ResValueInt.java b/src/main/java/com/reandroid/lib/arsc/value/ResValueInt.java
new file mode 100644
index 0000000..f7552cc
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/value/ResValueInt.java
@@ -0,0 +1,77 @@
+package com.reandroid.lib.arsc.value;
+
+import com.reandroid.lib.arsc.io.BlockReader;
+
+
+import java.io.IOException;
+
+public class ResValueInt extends BaseResValue {
+    public ResValueInt() {
+        super(BYTES_COUNT);
+        setHeaderSize(BYTES_SIZE);
+    }
+    @Override
+    void setHeaderSize(short size) {
+        setShort(OFFSET_SIZE, size);
+    }
+    @Override
+    short getHeaderSize() {
+        return getShort(OFFSET_SIZE);
+    }
+    @Override
+    void setReserved(byte reserved) {
+        setByte(OFFSET_RESERVED, reserved);
+    }
+    @Override
+    byte getReserved() {
+        return getByte(OFFSET_RESERVED);
+    }
+    @Override
+    public void setType(byte type){
+        setByte(OFFSET_TYPE, type);
+    }
+    @Override
+    public byte getType(){
+        return getByte(OFFSET_TYPE);
+    }
+    @Override
+    public int getData(){
+        return getInt(OFFSET_DATA);
+    }
+    @Override
+    public void setData(int data){
+        setInt(OFFSET_DATA, data);
+    }
+
+
+    @Override
+    public void onReadBytes(BlockReader reader) throws IOException {
+        super.onReadBytes(reader);
+    }
+    @Override
+    public String toString(){
+        StringBuilder builder=new StringBuilder();
+        builder.append(getClass().getSimpleName());
+        builder.append(" type=");
+        ValueType vt=getValueType();
+        if(vt!=null){
+            builder.append(vt.name());
+        }else {
+            builder.append("Unknown");
+        }
+        builder.append('(');
+        builder.append(String.format("0x%02x", getType()));
+        builder.append("), data=");
+        builder.append(String.format("0x%08x", getData()));
+        return builder.toString();
+    }
+
+    private static final int OFFSET_SIZE=0;
+    private static final int OFFSET_RESERVED=2;
+    private static final int OFFSET_TYPE=3;
+    private static final int OFFSET_DATA=4;
+
+    private static final int BYTES_COUNT=8;
+
+    private static final short BYTES_SIZE=0x08;
+}
diff --git a/src/main/java/com/reandroid/lib/arsc/value/ValueType.java b/src/main/java/com/reandroid/lib/arsc/value/ValueType.java
new file mode 100644
index 0000000..ad1799e
--- /dev/null
+++ b/src/main/java/com/reandroid/lib/arsc/value/ValueType.java
@@ -0,0 +1,56 @@
+package com.reandroid.lib.arsc.value;
+
+
+public enum ValueType {
+
+    NULL((byte) 0x00),
+    REFERENCE((byte) 0x01),
+    ATTRIBUTE((byte) 0x02),
+    STRING((byte) 0x03),
+    FLOAT((byte) 0x04),
+    DIMENSION((byte) 0x05),
+    FRACTION((byte) 0x06),
+    DYNAMIC_REFERENCE((byte) 0x07),
+    DYNAMIC_ATTRIBUTE((byte) 0x08),
+    FIRST_INT((byte) 0x10),
+    INT_DEC((byte) 0x10),
+    INT_HEX((byte) 0x11),
+    INT_BOOLEAN((byte) 0x12),
+    FIRST_COLOR_INT((byte) 0x1c),
+    INT_COLOR_ARGB8((byte) 0x1c),
+    INT_COLOR_RGB8((byte) 0x1d),
+    INT_COLOR_ARGB4((byte) 0x1e),
+    INT_COLOR_RGB4((byte) 0x1f),
+    LAST_COLOR_INT((byte) 0x1f),
+    LAST_INT((byte) 0x1f);
+
+    private final byte mByte;
+    ValueType(byte b) {
+        this.mByte=b;
+    }
+    public byte getByte(){
+        return mByte;
+    }
+    public static ValueType valueOf(byte b){
+        ValueType[] all=values();
+        for(ValueType vt:all){
+            if(vt.mByte==b){
+                return vt;
+            }
+        }
+        return null;
+    }
+    public static ValueType fromName(String name){
+        if(name==null){
+            return null;
+        }
+        name=name.toUpperCase();
+        ValueType[] all=values();
+        for(ValueType vt:all){
+            if(name.equals(vt.name())){
+                return vt;
+            }
+        }
+        return null;
+    }
+}
diff --git a/src/main/resources/lib.properties b/src/main/resources/lib.properties
new file mode 100644
index 0000000..a6b2f63
--- /dev/null
+++ b/src/main/resources/lib.properties
@@ -0,0 +1,4 @@
+lib.name=ARSCLib
+lib.version=${version}
+lib.repo=https://github.com/REAndroid/ARSCLib
+lib.description=Android binary resources read/write library