直接上代码，大家可以参考下

(1)自身类作为事件监听器

package cn.edu.gdmec.s07150745.work5;

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{

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

Button btn1 = (Button) findViewById(R.id.btn1);

btn1.setText("单击");

btn1.setOnClickListener(this);

}

@Override

public void onClick(View v) {

Toast.makeText(this,"已单击我...",Toast.LENGTH_SHORT).show();

System.out.println("已单击我...");

}

}

(2)外部类作为事件监听器：

package cn.edu.gdmec.s07150745.work5;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

public class Act2 extends AppCompatActivity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_act2);

Button btn2 = (Button) findViewById(R.id.btn2);

btn2.setText("单击");

btn2.setOnClickListener(new OuterClass("已单击我..."));

}

}

class OuterClass implements View.OnClickListener{

private String str="已单击我....";

public OuterClass(String str){

super();

this.str=str;

}

@Override

public void onClick(View v) {

System.out.println(str);

}

}

(3)内部类作为事件监听器：

package cn.edu.gdmec.s07150745.work5;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.Toast;

public class Act3 extends AppCompatActivity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_act3);

Button btn3 = (Button) findViewById(R.id.btn3);

btn3.setText("单击");

btn3.setOnClickListener(new OuterClass());

}

class OuterClass implements View.OnClickListener{

@Override

public void onClick(View v) {

Toast.makeText(Act3.this,"已单击我...",Toast.LENGTH_SHORT).show();

System.out.println("已单击我...");

}

}

}

(4)匿名类作为事件监听器：

package cn.edu.gdmec.s07150745.work5;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.Toast;

public class Act4 extends AppCompatActivity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_act4);

Button btn4 = (Button) findViewById(R.id.btn4);

btn4.setText("单击");

btn4.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

Toast.makeText(Act4.this,"已单击我...",Toast.LENGTH_SHORT).show();

System.out.println("已单击我...");

}

});

}

}

以上四种方法之后，在xml文件中给每一个事件即activity里面定义多一个android label即可。不忘在每个activity里面添加如下蓝色的一段代码哦。

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