1.配置

只需要在model builder.gradle中android中配置如下即可：

dataBinding {
        enabled = true
    }

如果還想使用lambda表示式，則再加入①②
①：在model 中新增

compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

②在專案builder.gradle中新增

dependencies {
        ……
        classpath 'me.tatarka:gradle-retrolambda:3.2.5'
 

    }

allprojects {
    repositories {
        ……
        apply plugin: 'me.tatarka.retrolambda'
    }
}

2.配置貼圖

root builder.grale

model builder.grale

3.簡單使用

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

    android:fitsSystemWindows="true"
    tools:context="com.databding.MainActivity">
    <data>
        <variable
            name="title"
            type="com.databding.entity.User"></variable>

        <variable
            name="presenter"
            type="com.databding.MainActivity.Presetner"
 
></variable>
    </data>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <EditText
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:hint="請輸入"
            android:onTextChanged="@{presenter.onTextChanged}" />


        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@{title.name}" />

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:onClick="@{presenter.onClick}"
            android:text="@{title.info}" />

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:onClick="@{()-> presenter.CustomClick(title)}"
            android:text="@{title.add}" />
    </LinearLayout>

</layout>

package com.databding;

import android.databinding.DataBindingUtil;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Toast;

import com.databding.databinding.DataMainBinding;
import com.databding.entity.User;

public class MainActivity extends AppCompatActivity {
    private User user = new User("吳新喜", "Android學習小學生", "安徽亳州");
    DataMainBinding binding;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        binding = DataBindingUtil.setContentView(this, R.layout.data_main);
        binding.setTitle(user);
        binding.setPresenter(new Presetner());
    }

    public class Presetner {
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            user.setName(s.toString());
            binding.setTitle(user);
        }

        public void onClick(View view) {
            Toast.makeText(MainActivity.this, "HHAHA", Toast.LENGTH_SHORT).show();
        }

        public void CustomClick(User user) {
            Toast.makeText(MainActivity.this, user.getName(), Toast.LENGTH_SHORT).show();
        }
    }
}

4.演示