diff --git a/inspector/src/main/java/com/taobao/weex/devtools/WeexInspector.java b/inspector/src/main/java/com/taobao/weex/devtools/WeexInspector.java
index 721f238..ce6f920 100644
--- a/inspector/src/main/java/com/taobao/weex/devtools/WeexInspector.java
+++ b/inspector/src/main/java/com/taobao/weex/devtools/WeexInspector.java
@@ -385,7 +385,7 @@ protected Initializer(Context context) {
    * Configure what services are to be enabled in this instance of WeexInspector.
    */
   public static class InitializerBuilder {
-    final Context mContext;
+    protected final Context mContext;
 
     // @Nullable DumperPluginsProvider mDumperPlugins;
     @Nullable InspectorModulesProvider mInspectorModules;
diff --git a/inspector/src/main/java/com/taobao/weex/devtools/inspector/database/SqliteDatabaseDriver.java b/inspector/src/main/java/com/taobao/weex/devtools/inspector/database/SqliteDatabaseDriver.java
index 61d1a54..47afc86 100644
--- a/inspector/src/main/java/com/taobao/weex/devtools/inspector/database/SqliteDatabaseDriver.java
+++ b/inspector/src/main/java/com/taobao/weex/devtools/inspector/database/SqliteDatabaseDriver.java
@@ -155,10 +155,10 @@ public Database.ExecuteSQLResponse executeSQL(String databaseName, String query,
     }
   }
 
-  private static String getFirstWord(String s) {
-    s = s.trim();
-    int firstSpace = s.indexOf(' ');
-    return firstSpace >= 0 ? s.substring(0, firstSpace) : s;
+  private static String getFirstWord(String str) {
+    str = str.trim();
+    int firstSpace = str.indexOf(' ');
+    return firstSpace >= 0 ? str.substring(0, firstSpace) : str;
   }
 
   @TargetApi(DatabaseConstants.MIN_API_LEVEL)
diff --git a/inspector/src/main/java/com/taobao/weex/devtools/inspector/elements/AbstractChainedDescriptor.java b/inspector/src/main/java/com/taobao/weex/devtools/inspector/elements/AbstractChainedDescriptor.java
index c951c48..85c3b96 100644
--- a/inspector/src/main/java/com/taobao/weex/devtools/inspector/elements/AbstractChainedDescriptor.java
+++ b/inspector/src/main/java/com/taobao/weex/devtools/inspector/elements/AbstractChainedDescriptor.java
@@ -41,7 +41,7 @@ public abstract class AbstractChainedDescriptor<E> extends Descriptor implements
   public void setSuper(Descriptor superDescriptor) {
     Util.throwIfNull(superDescriptor);
 
-    if (superDescriptor != mSuper) {
+    if (!superDescriptor.equals(mSuper)) {
       if (mSuper != null) {
         throw new IllegalStateException();
       }
diff --git a/inspector/src/main/java/com/taobao/weex/devtools/inspector/elements/Descriptor.java b/inspector/src/main/java/com/taobao/weex/devtools/inspector/elements/Descriptor.java
index c7ccc52..5f13cd8 100644
--- a/inspector/src/main/java/com/taobao/weex/devtools/inspector/elements/Descriptor.java
+++ b/inspector/src/main/java/com/taobao/weex/devtools/inspector/elements/Descriptor.java
@@ -30,7 +30,7 @@ protected final void initialize(Host host) {
     mHost = host;
   }
 
-  final boolean isInitialized() {
+  protected final boolean isInitialized() {
     return mHost != null;
   }
 
diff --git a/inspector/src/main/java/com/taobao/weex/devtools/inspector/network/DecompressionHelper.java b/inspector/src/main/java/com/taobao/weex/devtools/inspector/network/DecompressionHelper.java
index dadd26d..7cc7344 100644
--- a/inspector/src/main/java/com/taobao/weex/devtools/inspector/network/DecompressionHelper.java
+++ b/inspector/src/main/java/com/taobao/weex/devtools/inspector/network/DecompressionHelper.java
@@ -21,8 +21,8 @@
 
 // @VisibleForTest
 public class DecompressionHelper {
-  private static final String GZIP_ENCODING = "gzip";
-  private static final String DEFLATE_ENCODING = "deflate";
+  protected static final String GZIP_ENCODING = "gzip";
+  protected static final String DEFLATE_ENCODING = "deflate";
 
   public static InputStream teeInputWithDecompression(
       NetworkPeerManager peerManager,