diff --git a/build.gradle b/build.gradle
index e1a253c..c457c13 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.3.1'
+        classpath 'com.android.tools.build:gradle:2.3.2'
         classpath 'com.github.dcendents:android-maven-gradle-plugin:1.5'
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
diff --git a/library/src/main/java/me/donnie/adapter/BaseAdapter.java b/library/src/main/java/me/donnie/adapter/BaseAdapter.java
index 0db3e75..93d14a4 100644
--- a/library/src/main/java/me/donnie/adapter/BaseAdapter.java
+++ b/library/src/main/java/me/donnie/adapter/BaseAdapter.java
@@ -11,7 +11,7 @@
  * @description
  */
 
-public abstract class BaseAdapter<T> extends MultiItemAdapter<T, ViewHolder> {
+public abstract class BaseAdapter<T> extends MultiItemAdapter<T> {
 
     public BaseAdapter(final int layoutResId, List<T> datas) {
         super(datas);
diff --git a/library/src/main/java/me/donnie/adapter/MultiItemAdapter.java b/library/src/main/java/me/donnie/adapter/MultiItemAdapter.java
index 78f10fd..9423c59 100644
--- a/library/src/main/java/me/donnie/adapter/MultiItemAdapter.java
+++ b/library/src/main/java/me/donnie/adapter/MultiItemAdapter.java
@@ -34,7 +34,7 @@
  * @description
  */
 
-public abstract class MultiItemAdapter<T, K extends ViewHolder> extends RecyclerView.Adapter<K> {
+public abstract class MultiItemAdapter<T> extends RecyclerView.Adapter<ViewHolder> {
 
     private static final String TAG = MultiItemAdapter.class.getSimpleName();
 
@@ -160,17 +160,17 @@ public int getItemViewType(int position) {
     }
 
     @Override
-    public K onCreateViewHolder(ViewGroup parent, int viewType) {
+    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
         mContext = parent.getContext();
         this.mInflater = LayoutInflater.from(mContext);
         ItemViewDelegate itemViewDelegate = mItemViewDelegateManager.getItemViewDelegate(viewType);
-        K holder =  (K) K.createBaseViewHolder(mContext, parent, itemViewDelegate.getItemViewLayoutId());
+        ViewHolder holder =  ViewHolder.createBaseViewHolder(mContext, parent, itemViewDelegate.getItemViewLayoutId());
         bindViewClickListener(holder);
         return holder;
     }
 
     @Override
-    public void onBindViewHolder(K holder, int position) {
+    public void onBindViewHolder(ViewHolder holder, int position) {
         convert(holder, mDatas.get(position));
     }
 
@@ -201,7 +201,7 @@ protected void startAnim(Animator animator, int position) {
         animator.setInterpolator(mInterpolator);
     }
 
-    public void convert(K holder, T t) {
+    public void convert(ViewHolder holder, T t) {
         mItemViewDelegateManager.convert(holder, t, holder.getAdapterPosition());
     }
 
diff --git a/library/src/main/java/me/donnie/adapter/Walle.java b/library/src/main/java/me/donnie/adapter/Walle.java
index 2dfa933..9cd7dbc 100644
--- a/library/src/main/java/me/donnie/adapter/Walle.java
+++ b/library/src/main/java/me/donnie/adapter/Walle.java
@@ -146,6 +146,10 @@ public WrapperAdapter getWrapperAdapter() {
         return wrapperAdapter;
     }
 
+    public void addTo(RecyclerView recyclerView) {
+        recyclerView.setAdapter(wrapperAdapter);
+    }
+
     private class WrapperAdapter extends RecyclerView.Adapter<ViewHolder> {
 
         private static final int VIEW_TYPE_EMPTY = 1;