diff --git a/src/main/java/com/reandroid/lib/arsc/value/attribute/AttributeBag.java b/src/main/java/com/reandroid/lib/arsc/value/attribute/AttributeBag.java
index b9f87c5..3adf592 100755
--- a/src/main/java/com/reandroid/lib/arsc/value/attribute/AttributeBag.java
+++ b/src/main/java/com/reandroid/lib/arsc/value/attribute/AttributeBag.java
@@ -240,4 +240,7 @@ public class AttributeBag {
         AttributeBagItem[] bagItems=AttributeBagItem.create(resValueBag.getBagItems());
         return bagItems!=null;
     }
+
+    public static final short TYPE_ENUM = 0x0001;
+    public static final short TYPE_FLAG = 0x0002;
 }
diff --git a/src/main/java/com/reandroid/lib/arsc/value/attribute/AttributeBagItem.java b/src/main/java/com/reandroid/lib/arsc/value/attribute/AttributeBagItem.java
index 2ac56bc..1182191 100755
--- a/src/main/java/com/reandroid/lib/arsc/value/attribute/AttributeBagItem.java
+++ b/src/main/java/com/reandroid/lib/arsc/value/attribute/AttributeBagItem.java
@@ -107,8 +107,7 @@ public class AttributeBagItem {
             return false;
         }
         ResValueBagItem item=getBagItem();
-        short low=item.getDataHigh();
-        return low==0x0001;
+        return item.getDataHigh()==AttributeBag.TYPE_ENUM;
     }
     public boolean isFlag(){
         AttributeItemType type=getItemType();
@@ -116,8 +115,7 @@ public class AttributeBagItem {
             return false;
         }
         ResValueBagItem item=getBagItem();
-        short low=item.getDataHigh();
-        return low==0x0002;
+        return item.getDataHigh()==AttributeBag.TYPE_FLAG;
     }
     @Override
     public String toString(){