diff --git a/src/main/java/com/reandroid/lib/arsc/array/StagedAliasEntryArray.java b/src/main/java/com/reandroid/lib/arsc/array/StagedAliasEntryArray.java
index 9b977c7..ce11d4d 100644
--- a/src/main/java/com/reandroid/lib/arsc/array/StagedAliasEntryArray.java
+++ b/src/main/java/com/reandroid/lib/arsc/array/StagedAliasEntryArray.java
@@ -21,10 +21,13 @@
  import com.reandroid.lib.arsc.io.BlockReader;
  import com.reandroid.lib.arsc.item.IntegerItem;
  import com.reandroid.lib.arsc.value.StagedAliasEntry;
+ import com.reandroid.lib.json.JSONArray;
+ import com.reandroid.lib.json.JSONConvert;
 
  import java.io.IOException;
 
- public class StagedAliasEntryArray extends BlockArray<StagedAliasEntry> implements BlockLoad {
+ public class StagedAliasEntryArray extends BlockArray<StagedAliasEntry>
+         implements BlockLoad, JSONConvert<JSONArray> {
      private final IntegerItem count;
      public StagedAliasEntryArray(IntegerItem count){
          super();
@@ -57,4 +60,29 @@
      private void updateCount(){
          this.count.set(childesCount());
      }
+
+     @Override
+     public JSONArray toJson() {
+         StagedAliasEntry[] childes=getChildes();
+         if(childes==null||childes.length==0){
+             return null;
+         }
+         JSONArray jsonArray=new JSONArray();
+         for(int i=0;i<childes.length;i++){
+             jsonArray.put(i, childes[i].toJson());
+         }
+         return jsonArray;
+     }
+     @Override
+     public void fromJson(JSONArray json) {
+         clearChildes();
+         if(json==null){
+             return;
+         }
+         int length = json.length();
+         setChildesCount(length);
+         for(int i=0;i<length;i++){
+             get(i).fromJson(json.getJSONObject(i));
+         }
+     }
  }
diff --git a/src/main/java/com/reandroid/lib/arsc/chunk/PackageBlock.java b/src/main/java/com/reandroid/lib/arsc/chunk/PackageBlock.java
index 548721a..adba58f 100755
--- a/src/main/java/com/reandroid/lib/arsc/chunk/PackageBlock.java
+++ b/src/main/java/com/reandroid/lib/arsc/chunk/PackageBlock.java
@@ -33,6 +33,7 @@ package com.reandroid.lib.arsc.chunk;
  import com.reandroid.lib.arsc.pool.TypeStringPool;
  import com.reandroid.lib.arsc.value.EntryBlock;
  import com.reandroid.lib.arsc.value.LibraryInfo;
+ import com.reandroid.lib.json.JSONArray;
  import com.reandroid.lib.json.JSONConvert;
  import com.reandroid.lib.json.JSONObject;
 
@@ -289,11 +290,11 @@ package com.reandroid.lib.arsc.chunk;
         mSpecStringPoolCount.set(mSpecStringPool.countStrings());
     }
     private void refreshTypeIdOffset(){
-        int smallestId=getSpecTypePairArray().getSmallestTypeId();
-        if(smallestId>0){
-            smallestId=smallestId-1;
-        }
-        mTypeIdOffset.set(smallestId);
+        // TODO: find solution
+        //int largest=getSpecTypePairArray().getHighestTypeId();
+        //int count=getTypeStringPool().countStrings();
+        //mTypeIdOffset.set(count-largest);
+        mTypeIdOffset.set(0);
     }
     public void onEntryAdded(EntryBlock entryBlock){
         updateEntry(entryBlock);
@@ -321,6 +322,12 @@ package com.reandroid.lib.arsc.chunk;
         if(libraryInfoArray.childesCount()>0){
             jsonObject.put(NAME_libraries,libraryInfoArray.toJson());
         }
+        StagedAlias stagedAlias =
+                StagedAlias.mergeAll(getStagedAliasList().getChildes());
+        if(stagedAlias!=null){
+            jsonObject.put(NAME_staged_aliases,
+                    stagedAlias.getStagedAliasEntryArray().toJson());
+        }
         return jsonObject;
     }
     @Override
@@ -330,6 +337,12 @@ package com.reandroid.lib.arsc.chunk;
         getSpecTypePairArray().fromJson(json.getJSONArray(NAME_specs));
         LibraryInfoArray libraryInfoArray = mLibraryBlock.getLibraryInfoArray();
         libraryInfoArray.fromJson(json.optJSONArray(NAME_libraries));
+        if(json.has(NAME_staged_aliases)){
+            StagedAlias stagedAlias=new StagedAlias();
+            stagedAlias.getStagedAliasEntryArray()
+                    .fromJson(json.getJSONArray(NAME_staged_aliases));
+            mStagedAliasList.add(stagedAlias);
+        }
     }
     public void merge(PackageBlock packageBlock){
         if(packageBlock==null||packageBlock==this){
@@ -376,4 +389,5 @@ package com.reandroid.lib.arsc.chunk;
     public static final String JSON_FILE_NAME = "package.json";
     private static final String NAME_specs="specs";
     private static final String NAME_libraries="libraries";
+    private static final String NAME_staged_aliases="staged_aliases";
 }
diff --git a/src/main/java/com/reandroid/lib/arsc/chunk/StagedAlias.java b/src/main/java/com/reandroid/lib/arsc/chunk/StagedAlias.java
index c9d856c..35a1d1a 100644
--- a/src/main/java/com/reandroid/lib/arsc/chunk/StagedAlias.java
+++ b/src/main/java/com/reandroid/lib/arsc/chunk/StagedAlias.java
@@ -30,7 +30,7 @@
          stagedAliasEntryArray = new StagedAliasEntryArray(count);
          addChild(stagedAliasEntryArray);
      }
-     public void addStagedAliasEntries(StagedAlias stagedAlias){
+     public void merge(StagedAlias stagedAlias){
          if(stagedAlias==null||stagedAlias==this){
              return;
          }
@@ -58,4 +58,21 @@
          return getClass().getSimpleName()+
                  ": count="+getStagedAliasEntryCount();
      }
+     public static StagedAlias mergeAll(Collection<StagedAlias> stagedAliasList){
+         if(stagedAliasList.size()==0){
+             return null;
+         }
+         StagedAlias result=new StagedAlias();
+         for(StagedAlias stagedAlias:stagedAliasList){
+             if(stagedAlias.isNull()){
+                 continue;
+             }
+             result.merge(stagedAlias);
+         }
+         if(!result.isNull()){
+             result.refresh();
+             return result;
+         }
+         return null;
+     }
  }
diff --git a/src/main/java/com/reandroid/lib/arsc/value/StagedAliasEntry.java b/src/main/java/com/reandroid/lib/arsc/value/StagedAliasEntry.java
index a8be2f7..53ad8f9 100644
--- a/src/main/java/com/reandroid/lib/arsc/value/StagedAliasEntry.java
+++ b/src/main/java/com/reandroid/lib/arsc/value/StagedAliasEntry.java
@@ -1,8 +1,10 @@
 package com.reandroid.lib.arsc.value;
 
 import com.reandroid.lib.arsc.item.ByteArray;
+import com.reandroid.lib.json.JSONConvert;
+import com.reandroid.lib.json.JSONObject;
 
-public class StagedAliasEntry extends ByteArray {
+public class StagedAliasEntry extends ByteArray implements JSONConvert<JSONObject> {
     public StagedAliasEntry(){
         super(8);
     }
@@ -23,4 +25,18 @@ public class StagedAliasEntry extends ByteArray {
         return "stagedResId="+String.format("0x%08x",getStagedResId())
                 +", finalizedResId="+String.format("0x%08x",getFinalizedResId());
     }
+    @Override
+    public JSONObject toJson() {
+        JSONObject jsonObject=new JSONObject();
+        jsonObject.put(NAME_staged_resource_id, getStagedResId());
+        jsonObject.put(NAME_finalized_resource_id, getFinalizedResId());
+        return jsonObject;
+    }
+    @Override
+    public void fromJson(JSONObject json) {
+        setStagedResId(json.getInt(NAME_staged_resource_id));
+        setFinalizedResId(json.getInt(NAME_finalized_resource_id));
+    }
+    public static final String NAME_staged_resource_id = "staged_resource_id";
+    public static final String NAME_finalized_resource_id = "finalized_resource_id";
 }