<?xml version="1.0" encoding="utf-8"?>

 <LinearLayout

     xmlns:android="http://schemas.android.com/apk/res/android"

     xmlns:tools="http://schemas.android.com/tools"

     android:layout_width="match_parent"

     android:layout_height="match_parent"

     android:orientation="vertical"

     tools:context=".MainActivity">

     <Button

         android:layout_width="match_parent"

         android:layout_height="wrap_content"

         android:layout_marginTop="10dp"

         android:onClick="doClick"

         android:text="xml添加doClock"/>

     <Button

         android:id="@+id/button2"

         android:layout_width="match_parent"

         android:layout_height="wrap_content"

         android:layout_marginTop="10dp"

         android:text="匿名内部类点击"/>

     <Button

         android:id="@+id/button3"

         android:layout_width="match_parent"

         android:layout_height="wrap_content"

         android:layout_marginTop="10dp"

         android:text="自定义点击事件"/>

     <Button

         android:id="@+id/button4"

         android:layout_width="match_parent"

         android:layout_height="wrap_content"

         android:layout_marginTop="10dp"

         android:text="继承方式"/>

     <Button

         android:id="@+id/button5"

         android:layout_width="match_parent"

         android:layout_height="wrap_content"

         android:layout_marginTop="10dp"

         android:text="长按点击事件"/>

 </LinearLayout>

 package com.example.a11658.buttondemo;

 import android.support.v7.app.AppCompatActivity;

 import android.os.Bundle;

 import android.view.View;

 import android.widget.Button;

 import android.widget.Toast;

 public class MainActivity extends AppCompatActivity implements View.OnClickListener {

     Button button2, button3, button4, button5;

     @Override

     protected void onCreate(Bundle savedInstanceState) {

         super.onCreate(savedInstanceState);

         setContentView(R.layout.activity_main);

         initView();

     }

     private void initView() {

         button2 = findViewById(R.id.button2);

         button3 = findViewById(R.id.button3);

         button4 = findViewById(R.id.button4);

         button5 = findViewById(R.id.button5);

         button2.setOnClickListener(new View.OnClickListener() {

             @Override

             public void onClick(View v) {

                 //匿名内部类实现点击事件

                 Toast.makeText(MainActivity.this, "匿名内部类的点击事件", Toast.LENGTH_SHORT).show();

             }

         });

         button3.setOnClickListener(new MyListener());

         button4.setOnClickListener(this);

         button5.setOnLongClickListener(new View.OnLongClickListener() {

             @Override

             public boolean onLongClick(View v) {

                 Toast.makeText(MainActivity.this, "长按事件", Toast.LENGTH_SHORT).show();

                 return false;

             }

         });

     }

     public void doClick(View view) {

         //xml通过onClick实现点击事件

         Toast.makeText(this, "xml点击实现", Toast.LENGTH_SHORT).show();

     }

     @Override

     public void onClick(View v) {

         //继承方式

         Toast.makeText(this, "继承点击", Toast.LENGTH_SHORT).show();

     }

     class MyListener implements View.OnClickListener {

         @Override

         public void onClick(View v) {

             //自定义方式

             Toast.makeText(MainActivity.this, "自定义点击事件", Toast.LENGTH_SHORT).show();

         }

     }

 }