首先介紹一種新的實(shí)體類的寫法（當(dāng)數(shù)據(jù)發(fā)生變化的時(shí)候凉蜂，ui界面也會(huì)發(fā)生更新）

public class User {
    public ObservableField<String> name = new ObservableField<>();
    public ObservableField<Integer> age = new ObservableField<>()存筏；
}

在xml中的使用
<TextView
            android:id="@+id/tv_name"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@{`這個(gè)人的姓名是` + user.name}" />

在Activity中的使用（set方法發(fā)生了變化）
User user = new User();
user.name.set("wu");
user.age.set(i);

接下來進(jìn)入正題耸别，如何實(shí)現(xiàn)DataBinding和RecyclerView的使用

1.在Activity中添加RecyclerView控件

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_second"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.administrator.databindingproject.SecondActivity">

<android.support.v7.widget.RecyclerView
    android:id="@+id/recyclerView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    />

</RelativeLayout>

2.新建一個(gè)Item文件（列表的展現(xiàn)形式）

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android">


    <data>
        <import type="com.example.administrator.databindingproject.User" />
        <variable
            name="user"
            type="User" />
    </data>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="0.1dp"
            android:background="#333333" />

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="40dp"
            android:background="#ffffff"
            android:orientation="horizontal"
            android:paddingLeft="10dp">

            <TextView
                android:id="@+id/tv_name"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_vertical"
                android:text="@{`這個(gè)人的姓名是` + user.name}" />

            <TextView
                android:id="@+id/tv_age"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_vertical"
                android:layout_marginLeft="20dp"
                android:text="@{String.valueOf(user.age)}" />
        </LinearLayout>
    </LinearLayout>

</layout>

3.新建一個(gè)Adapter

package com.example.administrator.databindingproject;

import android.content.Context;
import android.databinding.DataBindingUtil;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.example.administrator.databindingproject.databinding.ItemSecondBinding;

import java.util.List;

/**
 * Created by $wu on 2017-09-09 上午 10:40.
 */

public class SecondAdapter extends RecyclerView.Adapter {

    private List<User> users;
    private Context context;

    public SecondAdapter(List<User> users, Context context) {
       if(this.users == null){
        this.users = new ArryList<User>();
   }  
        this.users = users;
        this.context = context;
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        LayoutInflater inflater = LayoutInflater.from(context);
        ItemSecondBinding binding = DataBindingUtil.inflate(inflater, R.layout.item_second, parent, false);
        return new MyViewHolder(binding.getRoot());
    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
        ItemSecondBinding binding = DataBindingUtil.getBinding(holder.itemView);
        binding.setUser(users.get(position));
        binding.executePendingBindings();
    }


    @Override
    public int getItemCount() {
        return users.size();
    }


    public class MyViewHolder extends RecyclerView.ViewHolder {
        public MyViewHolder(View itemView) {
            super(itemView);
        }
    }

}

4.在Activity中為RecyclerView設(shè)置數(shù)據(jù)

 private void initView() {
        RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recyclerView);
        recyclerView.setLayoutManager(new LinearLayoutManager(this));
        List<User> users = new ArrayList<>();
        for (int i = 0; i < 30; i++) {
            User user = new User();
            user.name.set("wu");
            user.age.set(i);
            users.add(user);
        }
        SecondAdapter adapter = new SecondAdapter(users, this);
        recyclerView.setAdapter(adapter);
    }

之前的文章介紹了DataBinding的基本使用http://www.reibang.com/p/da4e72a9885c