Android(安卓)onClick事件三种实现方法

import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.Toast;public class HelloActivity extends Activity {    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        Button btnMethod01;        Button btnMethod02;        Button btnMethod03;                btnMethod01 = (Button)findViewById(R.id.button1);        btnMethod02 = (Button)findViewById(R.id.button2);        btnMethod03 = (Button)findViewById(R.id.button3);                //第一种方法：匿名类        btnMethod01.setOnClickListener(new Button.OnClickListener(){            public void onClick(View v){                Toast.makeText(HelloActivity.this,R.string.method01                        ,Toast.LENGTH_SHORT).show();            }                    });                //添加监听事件        btnMethod02.setOnClickListener(new button1OnClickListener());    }    //第二种方法：内部类实现  有两部 1.写内部类 2.添加监听事件    private class button1OnClickListener implements OnClickListener{        public void onClick(View v){            Toast.makeText(HelloActivity.this,R.string.method02,                    Toast.LENGTH_SHORT).show();        }            }    //第三种方法：用xml方法配置，该名称要与  main.xml 中button03的     //android:onClick="OnClickButton03"的名字一样    public void OnClickButton03(View v){        Toast.makeText(HelloActivity.this,R.string.method03                ,Toast.LENGTH_SHORT).show();    }    }

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

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