From 8b968df5a6e0daf3ed90918412760698899f8351 Mon Sep 17 00:00:00 2001
From: donnieSky <qmhs414@gmail.com>
Date: Mon, 31 Jul 2017 17:17:35 +0800
Subject: [PATCH] support databinding

---
 app/build.gradle                              |   4 +
 .../main/java/me/donnie/app/MainActivity.java |  37 +++-
 .../app/databinding/ItemDb1Delegate.java      |  28 +++
 .../app/databinding/ItemDb2Delegate.java      |  28 +++
 .../databinding/ItemDbDefaultDelegate.java    |  29 +++
 .../app/databinding/StringViewModel.java      |  24 +++
 .../app/databinding/TestBindingAdapter.java   |  32 +++
 .../app/databinding/TextMultiDbAdapter.java   |  21 ++
 app/src/main/res/layout/activity_main.xml     |   2 +-
 app/src/main/res/layout/view_db_item.xml      |  38 ++++
 app/src/main/res/layout/view_db_item_1.xml    |  36 ++++
 app/src/main/res/layout/view_db_item_2.xml    |  32 +++
 library/build.gradle                          |   4 +
 .../java/me/donnie/adapter/BaseAdapter.java   |   2 +-
 .../me/donnie/adapter/MultiItemAdapter.java   |   2 +-
 .../adapter/databinding/BaseBindHolder.java   |  28 +++
 .../databinding/BaseBindingAdapter.java       | 200 ++++++++++++++++++
 .../databinding/MultiItemBindingAdapter.java  |  74 +++++++
 .../delegate/ItemViewDelegate.java            |  19 ++
 .../delegate/ItemViewDelegateManager.java     |  98 +++++++++
 .../delegate/ItemViewDelegateManager.java     |   1 -
 local.properties                              |  12 ++
 22 files changed, 741 insertions(+), 10 deletions(-)
 create mode 100644 app/src/main/java/me/donnie/app/databinding/ItemDb1Delegate.java
 create mode 100644 app/src/main/java/me/donnie/app/databinding/ItemDb2Delegate.java
 create mode 100644 app/src/main/java/me/donnie/app/databinding/ItemDbDefaultDelegate.java
 create mode 100644 app/src/main/java/me/donnie/app/databinding/StringViewModel.java
 create mode 100644 app/src/main/java/me/donnie/app/databinding/TestBindingAdapter.java
 create mode 100644 app/src/main/java/me/donnie/app/databinding/TextMultiDbAdapter.java
 create mode 100644 app/src/main/res/layout/view_db_item.xml
 create mode 100644 app/src/main/res/layout/view_db_item_1.xml
 create mode 100644 app/src/main/res/layout/view_db_item_2.xml
 create mode 100644 library/src/main/java/me/donnie/adapter/databinding/BaseBindHolder.java
 create mode 100644 library/src/main/java/me/donnie/adapter/databinding/BaseBindingAdapter.java
 create mode 100644 library/src/main/java/me/donnie/adapter/databinding/MultiItemBindingAdapter.java
 create mode 100644 library/src/main/java/me/donnie/adapter/databinding/delegate/ItemViewDelegate.java
 create mode 100644 library/src/main/java/me/donnie/adapter/databinding/delegate/ItemViewDelegateManager.java
 create mode 100644 local.properties

diff --git a/app/build.gradle b/app/build.gradle
index 8d0f812..a35460a 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -14,6 +14,10 @@ android {
         preDexLibraries = preDexEnabled && !isCi
     }
 
+    dataBinding {
+        enabled = true
+    }
+
     lintOptions {
         abortOnError false
     }
diff --git a/app/src/main/java/me/donnie/app/MainActivity.java b/app/src/main/java/me/donnie/app/MainActivity.java
index 3468826..ccbf321 100644
--- a/app/src/main/java/me/donnie/app/MainActivity.java
+++ b/app/src/main/java/me/donnie/app/MainActivity.java
@@ -1,5 +1,6 @@
 package me.donnie.app;
 
+import android.databinding.ObservableArrayList;
 import android.os.Bundle;
 import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.LinearLayoutManager;
@@ -10,15 +11,21 @@
 import java.util.ArrayList;
 import java.util.List;
 
-import me.donnie.adapter.BaseAdapter;
 import me.donnie.adapter.BaseViewHolder;
+import me.donnie.adapter.databinding.BaseBindingAdapter;
 import me.donnie.adapter.wrapper.Walle;
+import me.donnie.app.databinding.StringViewModel;
+import me.donnie.app.databinding.TextMultiDbAdapter;
 
 public class MainActivity extends AppCompatActivity implements Walle.OnLoadMoreListener {
 
     private RecyclerView rv;
 
-    private Test2Adapter adapter;
+    //private Test2Adapter adapter;
+
+    //private TestBindingAdapter mAdapter;
+
+    private TextMultiDbAdapter mAdapter;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -26,7 +33,8 @@ protected void onCreate(Bundle savedInstanceState) {
         setContentView(R.layout.activity_main);
         rv = (RecyclerView) findViewById(R.id.rv);
         rv.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false));
-        adapter = new Test2Adapter();
+        //adapter = new Test2Adapter();
+        mAdapter = new TextMultiDbAdapter();
 
         Walle walle = Walle.newBuilder()
                 .enableHeader(true)
@@ -36,12 +44,13 @@ protected void onCreate(Bundle savedInstanceState) {
                 .enableLoadMore(true)
                 .loadmoreRes(R.layout.view_load_more)
                 .addLoadMoreListener(this)
-                .wrapperAdapter(adapter).build();
+                .wrapperAdapter(mAdapter).build();
         rv.setAdapter(walle.getWrapperAdapter());
+        //rv.setAdapter(mAdapter);
 
-        adapter.setData(getdatas());
+        mAdapter.setData(getViewModels());
 
-        adapter.setOnItemClickListener(new BaseAdapter.OnItemClickListener() {
+        mAdapter.setOnItemClickListener(new BaseBindingAdapter.OnItemClickListener() {
             @Override
             public void onItemClick(View view, BaseViewHolder holder, int position) {
                 Toast.makeText(MainActivity.this, "点击"+(position - 1), Toast.LENGTH_SHORT).show();
@@ -49,6 +58,22 @@ public void onItemClick(View view, BaseViewHolder holder, int position) {
         });
     }
 
+    private ObservableArrayList<StringViewModel> getViewModels() {
+        ObservableArrayList<StringViewModel> models = new ObservableArrayList<>();
+        for (int i = 0; i < 30; i++) {
+            String txt = "";
+            if (i == 2) {
+                txt = ""+2;
+            } else if (i == 3) {
+                txt = ""+3;
+            } else {
+                txt = "This is Test -- "+i;
+            }
+            models.add(new StringViewModel(txt));
+        }
+        return models;
+    }
+
     private List<String> getdatas() {
         List<String> data = new ArrayList<>();
         for (int i = 0; i < 30 ; i++) {
diff --git a/app/src/main/java/me/donnie/app/databinding/ItemDb1Delegate.java b/app/src/main/java/me/donnie/app/databinding/ItemDb1Delegate.java
new file mode 100644
index 0000000..6952ee6
--- /dev/null
+++ b/app/src/main/java/me/donnie/app/databinding/ItemDb1Delegate.java
@@ -0,0 +1,28 @@
+package me.donnie.app.databinding;
+
+import me.donnie.adapter.databinding.delegate.ItemViewDelegate;
+import me.donnie.app.R;
+
+/**
+ * @author donnieSky
+ * @created_at 2017/7/31.
+ * @description
+ */
+
+public class ItemDb1Delegate implements ItemViewDelegate<StringViewModel, me.donnie.app.databinding.ViewDbItem1Binding> {
+    @Override
+    public int getItemViewLayoutId() {
+        return R.layout.view_db_item_1;
+    }
+
+    @Override
+    public boolean isForViewType(StringViewModel item, int position) {
+        return item.getTxt().equals("2");
+    }
+
+    @Override
+    public void convert(me.donnie.app.databinding.ViewDbItem1Binding binding, StringViewModel stringViewModel, int position) {
+        binding.setViewModel(stringViewModel);
+        binding.executePendingBindings();
+    }
+}
diff --git a/app/src/main/java/me/donnie/app/databinding/ItemDb2Delegate.java b/app/src/main/java/me/donnie/app/databinding/ItemDb2Delegate.java
new file mode 100644
index 0000000..2a8a7ac
--- /dev/null
+++ b/app/src/main/java/me/donnie/app/databinding/ItemDb2Delegate.java
@@ -0,0 +1,28 @@
+package me.donnie.app.databinding;
+
+import me.donnie.adapter.databinding.delegate.ItemViewDelegate;
+import me.donnie.app.R;
+
+/**
+ * @author donnieSky
+ * @created_at 2017/7/31.
+ * @description
+ */
+
+public class ItemDb2Delegate implements ItemViewDelegate<StringViewModel, me.donnie.app.databinding.ViewDbItem2Binding> {
+    @Override
+    public int getItemViewLayoutId() {
+        return R.layout.view_db_item_2;
+    }
+
+    @Override
+    public boolean isForViewType(StringViewModel item, int position) {
+        return item.getTxt().equals("3");
+    }
+
+    @Override
+    public void convert(me.donnie.app.databinding.ViewDbItem2Binding binding, StringViewModel stringViewModel, int position) {
+        binding.setViewModel(stringViewModel);
+        binding.executePendingBindings();
+    }
+}
diff --git a/app/src/main/java/me/donnie/app/databinding/ItemDbDefaultDelegate.java b/app/src/main/java/me/donnie/app/databinding/ItemDbDefaultDelegate.java
new file mode 100644
index 0000000..4432603
--- /dev/null
+++ b/app/src/main/java/me/donnie/app/databinding/ItemDbDefaultDelegate.java
@@ -0,0 +1,29 @@
+package me.donnie.app.databinding;
+
+import me.donnie.adapter.databinding.delegate.ItemViewDelegate;
+import me.donnie.app.R;
+
+/**
+ * @author donnieSky
+ * @created_at 2017/7/31.
+ * @description
+ */
+
+public class ItemDbDefaultDelegate implements ItemViewDelegate<StringViewModel, ViewDbItemBinding> {
+    @Override
+    public int getItemViewLayoutId() {
+        return R.layout.view_db_item;
+    }
+
+    @Override
+    public boolean isForViewType(StringViewModel item, int position) {
+        return !item.getTxt().equals("2") &&
+                !item.getTxt().equals("3");
+    }
+
+    @Override
+    public void convert(ViewDbItemBinding binding, StringViewModel stringViewModel, int position) {
+        binding.setViewModel(stringViewModel);
+        binding.executePendingBindings();
+    }
+}
diff --git a/app/src/main/java/me/donnie/app/databinding/StringViewModel.java b/app/src/main/java/me/donnie/app/databinding/StringViewModel.java
new file mode 100644
index 0000000..2760827
--- /dev/null
+++ b/app/src/main/java/me/donnie/app/databinding/StringViewModel.java
@@ -0,0 +1,24 @@
+package me.donnie.app.databinding;
+
+import android.databinding.BaseObservable;
+import android.databinding.Bindable;
+
+/**
+ * @author donnieSky
+ * @created_at 2017/7/31.
+ * @description
+ */
+
+public class StringViewModel extends BaseObservable {
+
+    private String txt;
+
+    public StringViewModel(String txt) {
+        this.txt = txt;
+    }
+
+    @Bindable
+    public String getTxt() {
+        return txt;
+    }
+}
diff --git a/app/src/main/java/me/donnie/app/databinding/TestBindingAdapter.java b/app/src/main/java/me/donnie/app/databinding/TestBindingAdapter.java
new file mode 100644
index 0000000..45024df
--- /dev/null
+++ b/app/src/main/java/me/donnie/app/databinding/TestBindingAdapter.java
@@ -0,0 +1,32 @@
+package me.donnie.app.databinding;
+
+import me.donnie.adapter.BaseViewHolder;
+import me.donnie.adapter.databinding.BaseBindingAdapter;
+import me.donnie.app.R;
+
+/**
+ * @author donnieSky
+ * @created_at 2017/7/31.
+ * @description
+ */
+
+public class TestBindingAdapter extends BaseBindingAdapter<StringViewModel, ViewDbItemBinding, BaseViewHolder> {
+
+    public TestBindingAdapter() {
+        super(R.layout.view_db_item);
+    }
+
+    /*@Override
+    protected void convert(BaseBindHolder<ViewDbItemBinding> holder, StringViewModel model, int position) {
+        StringViewModel viewModel = getItem(position);
+        ViewDbItemBinding itemBinding = holder.binding;
+        itemBinding.setViewModel(viewModel);
+        itemBinding.executePendingBindings();
+    }*/
+
+    @Override
+    protected void convert(ViewDbItemBinding binding, StringViewModel stringViewModel, int position) {
+        binding.setViewModel(stringViewModel);
+        binding.executePendingBindings();
+    }
+}
diff --git a/app/src/main/java/me/donnie/app/databinding/TextMultiDbAdapter.java b/app/src/main/java/me/donnie/app/databinding/TextMultiDbAdapter.java
new file mode 100644
index 0000000..36723e0
--- /dev/null
+++ b/app/src/main/java/me/donnie/app/databinding/TextMultiDbAdapter.java
@@ -0,0 +1,21 @@
+package me.donnie.app.databinding;
+
+import me.donnie.adapter.BaseViewHolder;
+import me.donnie.adapter.databinding.MultiItemBindingAdapter;
+
+/**
+ * @author donnieSky
+ * @created_at 2017/7/31.
+ * @description
+ */
+
+public class TextMultiDbAdapter extends MultiItemBindingAdapter<StringViewModel, BaseViewHolder> {
+
+    public TextMultiDbAdapter() {
+        super(null);
+
+        addItemViewDelegate(new ItemDbDefaultDelegate());
+        addItemViewDelegate(new ItemDb1Delegate());
+        addItemViewDelegate(new ItemDb2Delegate());
+    }
+}
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 41547a4..dd167bf 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -6,4 +6,4 @@
     android:id="@+id/rv"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context="me.donnie.app.MainActivity"/>
+    tools:context="me.donnie.app.MainActivity"/>
\ No newline at end of file
diff --git a/app/src/main/res/layout/view_db_item.xml b/app/src/main/res/layout/view_db_item.xml
new file mode 100644
index 0000000..65e583c
--- /dev/null
+++ b/app/src/main/res/layout/view_db_item.xml
@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <data>
+        <variable
+            name="viewModel"
+            type="me.donnie.app.databinding.StringViewModel"/>
+    </data>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="100dp"
+        android:background="?attr/selectableItemBackground"
+        android:gravity="center_vertical"
+        android:orientation="horizontal"
+        android:padding="20dp">
+
+        <ImageView
+            android:id="@+id/img"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:src="@mipmap/ic_launcher"/>
+
+        <TextView
+            android:id="@+id/txt"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginLeft="20dp"
+            android:text="@{viewModel.txt}"
+            android:textColor="@android:color/black"
+            android:textSize="20sp"/>
+
+
+    </LinearLayout>
+</layout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/view_db_item_1.xml b/app/src/main/res/layout/view_db_item_1.xml
new file mode 100644
index 0000000..5d765e2
--- /dev/null
+++ b/app/src/main/res/layout/view_db_item_1.xml
@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <data>
+        <variable
+            name="viewModel"
+            type="me.donnie.app.databinding.StringViewModel"/>
+    </data>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="100dp"
+        android:background="?attr/selectableItemBackground"
+        android:gravity="center_vertical"
+        android:orientation="horizontal"
+        android:padding="20dp">
+
+        <Button
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="test"/>
+
+        <TextView
+            android:id="@+id/txt1"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginLeft="20dp"
+            android:text="@{viewModel.txt}"
+            android:textColor="@android:color/black"
+            android:textSize="20sp"/>
+
+    </LinearLayout>
+</layout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/view_db_item_2.xml b/app/src/main/res/layout/view_db_item_2.xml
new file mode 100644
index 0000000..bfa3dec
--- /dev/null
+++ b/app/src/main/res/layout/view_db_item_2.xml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <data>
+        <variable
+            name="viewModel"
+            type="me.donnie.app.databinding.StringViewModel"/>
+    </data>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="100dp"
+        android:background="?attr/selectableItemBackground"
+        android:gravity="center_vertical"
+        android:orientation="horizontal"
+        android:padding="20dp">
+
+        <TextView
+            android:id="@+id/txt3"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:background="@color/colorPrimary"
+            android:gravity="center"
+            android:text="@{viewModel.txt}"
+            android:textColor="@android:color/white"
+            android:textSize="30sp"/>
+
+    </LinearLayout>
+</layout>
\ No newline at end of file
diff --git a/library/build.gradle b/library/build.gradle
index ee29f86..4652de9 100644
--- a/library/build.gradle
+++ b/library/build.gradle
@@ -12,6 +12,10 @@ android {
         abortOnError false
     }
 
+    dataBinding {
+        enabled = true
+    }
+
     defaultConfig {
         minSdkVersion 14
         targetSdkVersion 25
diff --git a/library/src/main/java/me/donnie/adapter/BaseAdapter.java b/library/src/main/java/me/donnie/adapter/BaseAdapter.java
index 07fb5ce..eb21c58 100644
--- a/library/src/main/java/me/donnie/adapter/BaseAdapter.java
+++ b/library/src/main/java/me/donnie/adapter/BaseAdapter.java
@@ -101,7 +101,7 @@ public int getItemCount() {
         return mData.size();
     }
 
-    protected abstract void convert(BaseViewHolder holder, T t, int position);
+    protected abstract void convert(VH holder, T t, int position);
 
     protected void setListener(final ViewGroup parent, final BaseViewHolder viewHolder, int viewType) {
         viewHolder.itemView.setOnClickListener(new View.OnClickListener() {
diff --git a/library/src/main/java/me/donnie/adapter/MultiItemAdapter.java b/library/src/main/java/me/donnie/adapter/MultiItemAdapter.java
index 148d776..c64beda 100644
--- a/library/src/main/java/me/donnie/adapter/MultiItemAdapter.java
+++ b/library/src/main/java/me/donnie/adapter/MultiItemAdapter.java
@@ -44,7 +44,7 @@ public void onBindViewHolder(VH holder, int position) {
     }
 
     @Override
-    protected void convert(BaseViewHolder holder, T t, int position) {
+    protected void convert(VH holder, T t, int position) {
         mItemViewDelegateManager.convert(holder, t, position);
     }
 
diff --git a/library/src/main/java/me/donnie/adapter/databinding/BaseBindHolder.java b/library/src/main/java/me/donnie/adapter/databinding/BaseBindHolder.java
new file mode 100644
index 0000000..e4de7ed
--- /dev/null
+++ b/library/src/main/java/me/donnie/adapter/databinding/BaseBindHolder.java
@@ -0,0 +1,28 @@
+package me.donnie.adapter.databinding;
+
+import android.content.Context;
+import android.databinding.DataBindingUtil;
+import android.databinding.ViewDataBinding;
+import android.support.annotation.LayoutRes;
+import android.support.annotation.NonNull;
+import android.support.v7.widget.RecyclerView;
+import android.view.LayoutInflater;
+import android.view.ViewGroup;
+
+/**
+ * @author donnieSky
+ * @created_at 2017/7/31.
+ * @description
+ */
+
+public class BaseBindHolder<B extends ViewDataBinding> extends RecyclerView.ViewHolder {
+
+    public final B binding;
+
+    public BaseBindHolder(@NonNull Context context,
+                          @NonNull ViewGroup parent,
+                          @LayoutRes int layoutResId) {
+        super(LayoutInflater.from(context).inflate(layoutResId, parent, false));
+        this.binding = DataBindingUtil.bind(itemView);
+    }
+}
diff --git a/library/src/main/java/me/donnie/adapter/databinding/BaseBindingAdapter.java b/library/src/main/java/me/donnie/adapter/databinding/BaseBindingAdapter.java
new file mode 100644
index 0000000..45d8d8f
--- /dev/null
+++ b/library/src/main/java/me/donnie/adapter/databinding/BaseBindingAdapter.java
@@ -0,0 +1,200 @@
+package me.donnie.adapter.databinding;
+
+import android.databinding.DataBindingUtil;
+import android.databinding.ObservableArrayList;
+import android.databinding.ViewDataBinding;
+import android.support.annotation.IntRange;
+import android.support.annotation.LayoutRes;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.support.v7.widget.RecyclerView;
+import android.view.View;
+import android.view.ViewGroup;
+
+import java.util.Collection;
+
+import me.donnie.adapter.BaseViewHolder;
+
+/**
+ * @author donnieSky
+ * @created_at 2017/7/31.
+ * @description
+ */
+
+public abstract class BaseBindingAdapter<T, B extends ViewDataBinding, VH extends BaseViewHolder> extends RecyclerView.Adapter<VH> {
+
+    protected ObservableArrayList<T> mData;
+    protected ListChangedCallback itemsChangeCallback;
+    protected int mLayoutResId;
+
+    protected OnItemClickListener mOnItemClickListener;
+
+    @NonNull
+    public ObservableArrayList<T> getData() {
+        return mData;
+    }
+
+    public void setData(@Nullable ObservableArrayList<T> data) {
+        mData = data == null ? new ObservableArrayList<T>() : data;
+        notifyDataSetChanged();
+    }
+
+    private void compatibilityDataSizeChanged(int size) {
+        final int dataSize = mData == null ? 0 : mData.size();
+        if (dataSize == size) {
+            notifyDataSetChanged();
+        }
+    }
+
+    public void addData(@IntRange(from = 0) int position, @NonNull Collection<? extends T> newData) {
+        mData.addAll(position, newData);
+        notifyItemRangeInserted(position, newData.size());
+        compatibilityDataSizeChanged(newData.size());
+    }
+
+    public void addData(@NonNull Collection<? extends T> newData) {
+        mData.addAll(newData);
+        notifyItemRangeInserted(mData.size() - newData.size(), newData.size());
+        compatibilityDataSizeChanged(newData.size());
+    }
+
+    public void replaceData(@NonNull Collection<? extends T> data) {
+        mData.clear();
+        mData.addAll(data);
+        notifyDataSetChanged();
+    }
+
+    @Nullable
+    public T getItem(@IntRange(from = 0) int position) {
+        if (position < mData.size()) {
+            return mData.get(position);
+        } else {
+            return null;
+        }
+    }
+
+    public BaseBindingAdapter(@Nullable ObservableArrayList<T> data) {
+        this(0, data);
+    }
+
+    public BaseBindingAdapter(@LayoutRes int layoutResId) {
+        this(layoutResId, null);
+    }
+
+    public BaseBindingAdapter(@LayoutRes int layoutResId, @Nullable ObservableArrayList<T> data) {
+        this.mData = data == null ? new ObservableArrayList<T>() : data;
+        if (layoutResId != 0) {
+            this.mLayoutResId = layoutResId;
+        }
+        this.itemsChangeCallback = new ListChangedCallback();
+    }
+
+    @Override
+    public VH onCreateViewHolder(ViewGroup parent, int viewType) {
+        BaseViewHolder holder = BaseViewHolder.createViewHolder(parent.getContext(), parent, mLayoutResId);
+        setListener(parent, holder, viewType);
+        return (VH) holder;
+    }
+
+    @Override
+    public void onBindViewHolder(VH holder, int position) {
+        B binding = DataBindingUtil.bind(holder.itemView);
+        convert(binding, mData.get(position), position);
+    }
+
+    @Override
+    public int getItemCount() {
+        return mData.size();
+    }
+
+    protected abstract void convert(B binding, T t, int position);
+
+    protected void setListener(final ViewGroup parent, final BaseViewHolder holder, int viewType) {
+        holder.itemView.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                if (mOnItemClickListener != null) {
+                    int position = holder.getAdapterPosition();
+                    mOnItemClickListener.onItemClick(v, holder, position);
+                }
+            }
+        });
+    }
+
+    @Override
+    public void onAttachedToRecyclerView(RecyclerView recyclerView) {
+        super.onAttachedToRecyclerView(recyclerView);
+        this.mData.addOnListChangedCallback(itemsChangeCallback);
+    }
+
+    @Override
+    public void onDetachedFromRecyclerView(RecyclerView recyclerView) {
+        super.onDetachedFromRecyclerView(recyclerView);
+        this.mData.removeOnListChangedCallback(itemsChangeCallback);
+    }
+
+    protected void resetItems(ObservableArrayList<T> newItems) {
+        this.mData = newItems;
+    }
+
+    protected void onChanged(ObservableArrayList<T> newItems) {
+        resetItems(newItems);
+        notifyDataSetChanged();
+    }
+
+    protected void onItemRangeChanged(ObservableArrayList<T> newItems, int positionStart, int itemCount) {
+        resetItems(newItems);
+        notifyItemRangeChanged(positionStart, itemCount);
+    }
+
+    protected void onItemRangeInserted(ObservableArrayList<T> newItems, int positionStart, int itemCount) {
+        resetItems(newItems);
+        notifyItemRangeInserted(positionStart, itemCount);
+    }
+
+    protected void onItemRangeMoved(ObservableArrayList<T> newItems) {
+        resetItems(newItems);
+        notifyDataSetChanged();
+    }
+
+    protected void onItemRangeRemoved(ObservableArrayList<T> newItems, int positionStart, int itemCount) {
+        resetItems(newItems);
+        notifyItemRangeRemoved(positionStart, itemCount);
+    }
+
+    private class ListChangedCallback extends ObservableArrayList.OnListChangedCallback<ObservableArrayList<T>> {
+
+        @Override
+        public void onChanged(ObservableArrayList<T> sender) {
+            BaseBindingAdapter.this.onChanged(sender);
+        }
+
+        @Override
+        public void onItemRangeChanged(ObservableArrayList<T> sender, int positionStart, int itemCount) {
+            BaseBindingAdapter.this.onItemRangeChanged(sender, positionStart, itemCount);
+        }
+
+        @Override
+        public void onItemRangeInserted(ObservableArrayList<T> sender, int positionStart, int itemCount) {
+            BaseBindingAdapter.this.onItemRangeInserted(sender, positionStart, itemCount);
+        }
+
+        @Override
+        public void onItemRangeMoved(ObservableArrayList<T> sender, int fromPosition, int toPosition, int itemCount) {
+            BaseBindingAdapter.this.onItemRangeMoved(sender);
+        }
+
+        @Override
+        public void onItemRangeRemoved(ObservableArrayList<T> sender, int positionStart, int itemCount) {
+            BaseBindingAdapter.this.onItemRangeRemoved(sender, positionStart, itemCount);
+        }
+    }
+
+    public interface OnItemClickListener {
+        void onItemClick(View view, BaseViewHolder holder, int position);
+    }
+
+    public void setOnItemClickListener(OnItemClickListener onItemClickListener) {
+        mOnItemClickListener = onItemClickListener;
+    }
+}
diff --git a/library/src/main/java/me/donnie/adapter/databinding/MultiItemBindingAdapter.java b/library/src/main/java/me/donnie/adapter/databinding/MultiItemBindingAdapter.java
new file mode 100644
index 0000000..7693c2a
--- /dev/null
+++ b/library/src/main/java/me/donnie/adapter/databinding/MultiItemBindingAdapter.java
@@ -0,0 +1,74 @@
+package me.donnie.adapter.databinding;
+
+import android.databinding.DataBindingUtil;
+import android.databinding.ObservableArrayList;
+import android.databinding.ViewDataBinding;
+import android.support.annotation.Nullable;
+import android.view.ViewGroup;
+
+import me.donnie.adapter.BaseViewHolder;
+import me.donnie.adapter.databinding.delegate.ItemViewDelegate;
+import me.donnie.adapter.databinding.delegate.ItemViewDelegateManager;
+
+/**
+ * @author donnieSky
+ * @created_at 2017/7/31.
+ * @description
+ */
+
+public abstract class MultiItemBindingAdapter<T, VH extends BaseViewHolder> extends BaseBindingAdapter<T, ViewDataBinding, VH> {
+
+    protected ItemViewDelegateManager mItemViewDelegateManager;
+
+    public MultiItemBindingAdapter(@Nullable ObservableArrayList<T> data) {
+        super(data);
+        mItemViewDelegateManager = new ItemViewDelegateManager<>();
+    }
+
+    @Override
+    public int getItemViewType(int position) {
+        if (!useItemViewDelegateManager()) {
+            return super.getItemViewType(position);
+        }
+        return mItemViewDelegateManager.getItemViewType(mData.get(position), position);
+    }
+
+    @Override
+    public VH onCreateViewHolder(ViewGroup parent, int viewType) {
+        ItemViewDelegate itemViewDelegate = mItemViewDelegateManager.getItemViewDelegate(viewType);
+        int layoutResId = itemViewDelegate.getItemViewLayoutId();
+        BaseViewHolder holder = BaseViewHolder.createViewHolder(parent.getContext(), parent, layoutResId);
+        setListener(parent, holder, viewType);
+        return (VH)holder;
+    }
+
+    @Override
+    public void onBindViewHolder(VH holder, int position) {
+        ViewDataBinding binding = DataBindingUtil.bind(holder.itemView);
+        convert(binding, mData.get(position), position);
+    }
+
+    @Override
+    protected void convert(ViewDataBinding binding, T t, int position) {
+        mItemViewDelegateManager.convert(binding, t, position);
+    }
+
+    /*@Override
+    protected void convert(B binding, T t, int position) {
+        mItemViewDelegateManager.convert(binding, t, position);
+    }*/
+
+    protected boolean useItemViewDelegateManager() {
+        return mItemViewDelegateManager.getItemViewDelegateCount() > 0;
+    }
+
+    public BaseBindingAdapter addItemViewDelegate(ItemViewDelegate itemViewDelegate) {
+        mItemViewDelegateManager.addDelegate(itemViewDelegate);
+        return this;
+    }
+
+    public BaseBindingAdapter addItemViewDelegate(int viewType, ItemViewDelegate itemViewDelegate) {
+        mItemViewDelegateManager.addDelegate(viewType, itemViewDelegate);
+        return this;
+    }
+}
diff --git a/library/src/main/java/me/donnie/adapter/databinding/delegate/ItemViewDelegate.java b/library/src/main/java/me/donnie/adapter/databinding/delegate/ItemViewDelegate.java
new file mode 100644
index 0000000..029430c
--- /dev/null
+++ b/library/src/main/java/me/donnie/adapter/databinding/delegate/ItemViewDelegate.java
@@ -0,0 +1,19 @@
+package me.donnie.adapter.databinding.delegate;
+
+import android.databinding.ViewDataBinding;
+
+/**
+ * @author donnieSky
+ * @created_at 2017/7/31.
+ * @description
+ */
+
+public interface ItemViewDelegate<T, B extends ViewDataBinding> {
+
+    int getItemViewLayoutId();
+
+    boolean isForViewType(T item, int position);
+
+    void convert(B binding, T t, int position);
+
+}
diff --git a/library/src/main/java/me/donnie/adapter/databinding/delegate/ItemViewDelegateManager.java b/library/src/main/java/me/donnie/adapter/databinding/delegate/ItemViewDelegateManager.java
new file mode 100644
index 0000000..903c424
--- /dev/null
+++ b/library/src/main/java/me/donnie/adapter/databinding/delegate/ItemViewDelegateManager.java
@@ -0,0 +1,98 @@
+package me.donnie.adapter.databinding.delegate;
+
+import android.databinding.ViewDataBinding;
+import android.support.v4.util.SparseArrayCompat;
+
+/**
+ * @author donnieSky
+ * @created_at 2017/7/31.
+ * @description
+ */
+
+public class ItemViewDelegateManager<T, B extends ViewDataBinding> {
+
+    SparseArrayCompat<ItemViewDelegate<T, B>> delegates = new SparseArrayCompat<>();
+
+    public int getItemViewDelegateCount() {
+        return delegates.size();
+    }
+
+    public ItemViewDelegateManager<T, B> addDelegate(ItemViewDelegate<T, B> delegate) {
+        int viewType = delegates.size();
+        if (delegate != null) {
+            delegates.put(viewType, delegate);
+            viewType++;
+        }
+        return this;
+    }
+
+    public ItemViewDelegateManager<T, B> addDelegate(int viewType, ItemViewDelegate<T, B> delegate) {
+        if (delegates.get(viewType) != null) {
+            throw new IllegalArgumentException(
+                    "An ItemViewDelegate is already registered for the viewType = "
+                            + viewType
+                            + ". Already registered ItemViewDelegate is "
+                            + delegates.get(viewType));
+        }
+        delegates.put(viewType, delegate);
+        return this;
+    }
+
+    public ItemViewDelegateManager<T, B> removeDelegate(ItemViewDelegate<T, B> delegate) {
+        if (delegate == null) {
+            throw new NullPointerException("ItemViewDelegate is null");
+        }
+        int indexToRemove = delegates.indexOfValue(delegate);
+
+        if (indexToRemove >= 0) {
+            delegates.removeAt(indexToRemove);
+        }
+        return this;
+    }
+
+    public ItemViewDelegateManager<T, B> removeDelegate(int itemType) {
+        int indexToRemove = delegates.indexOfKey(itemType);
+        if (indexToRemove >= 0) {
+            delegates.removeAt(indexToRemove);
+        }
+        return this;
+    }
+
+    public int getItemViewType(T item, int position) {
+        int delegatesCount = delegates.size();
+        for (int i = delegatesCount - 1; i >= 0; i--) {
+            ItemViewDelegate<T, B> delegate = delegates.valueAt(i);
+            if (delegate.isForViewType(item, position)) {
+                return delegates.keyAt(i);
+            }
+        }
+        throw new IllegalArgumentException(
+                "No ItemViewDelegate added that matches position=" + position + " in data source");
+    }
+
+    public void convert(B binding, T item, int position) {
+        int delegatesCount = delegates.size();
+        for (int i = 0; i < delegatesCount; i++) {
+            ItemViewDelegate<T, B> delegate = delegates.valueAt(i);
+            if (delegate.isForViewType(item, position)) {
+                delegate.convert(binding, item, position);
+                return;
+            }
+        }
+        throw new IllegalArgumentException(
+                "No ItemViewDelegateManager added that matches position=" + position + " in data source");
+    }
+
+    public ItemViewDelegate<T, B> getItemViewDelegate(int viewType) {
+        return delegates.get(viewType);
+    }
+
+    public int getItemViewLayoutId(int viewType) {
+        return getItemViewDelegate(viewType).getItemViewLayoutId();
+    }
+
+    public int getItemViewType(ItemViewDelegate<T, B> itemViewDelegate) {
+        return delegates.indexOfValue(itemViewDelegate);
+    }
+
+}
diff --git a/library/src/main/java/me/donnie/adapter/delegate/ItemViewDelegateManager.java b/library/src/main/java/me/donnie/adapter/delegate/ItemViewDelegateManager.java
index c2ebd8c..49a4933 100644
--- a/library/src/main/java/me/donnie/adapter/delegate/ItemViewDelegateManager.java
+++ b/library/src/main/java/me/donnie/adapter/delegate/ItemViewDelegateManager.java
@@ -103,7 +103,6 @@ public void convert(BaseViewHolder holder, T item, int position)
                 "No ItemViewDelegateManager added that matches position=" + position + " in data source");
     }
 
-
     public ItemViewDelegate getItemViewDelegate(int viewType)
     {
         return delegates.get(viewType);
diff --git a/local.properties b/local.properties
new file mode 100644
index 0000000..8d56abd
--- /dev/null
+++ b/local.properties
@@ -0,0 +1,12 @@
+## This file is automatically generated by Android Studio.
+# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
+#
+# This file must *NOT* be checked into Version Control Systems,
+# as it contains information specific to your local configuration.
+#
+# Location of the SDK. This is only used by Gradle.
+# For customization when using a Version Control System, please read the
+# header note.
+#Thu Jul 06 11:33:35 CST 2017
+ndk.dir=D\:\\Google\\adt-bundle-windows-x86_64-20140702\\sdk\\ndk-bundle
+sdk.dir=D\:\\Google\\adt-bundle-windows-x86_64-20140702\\sdk