Android 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"?>  
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
        android:layout_width="fill_parent"  
        android:layout_height="fill_parent"  
        android:orientation="vertical">  
        <Button  
            android:id="@+id/button1"  
            android:layout_width="match_parent"  
            android:layout_height="wrap_content"  
            android:text="@string/method01"/>  
        <Button  
            android:id="@+id/button2"  
            android:layout_width="match_parent"  
            android:layout_height="wrap_content"  
            android:text="@string/method02"/>  
      
        <Button  
            android:onClick="OnClickButton03"  
            android:id="@+id/button3"  
            android:layout_width="match_parent"  
            android:layout_height="wrap_content"  
            android:text="@string/method03"/>  
      
    </LinearLayout>  

 

 

http://blog.csdn.net/greenappple/article/details/7580958