5、自己定义方法，配置Android:onclick属性

import android.media.JetPlayer.OnJetEventListener;
import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.app.Dialog;
import android.content.DialogInterface;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.Toast;

public class MainActivity extends Activity implements OnClickListener{

	Button button1,button2,button4,button5;
	ImageButton button3;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		button1 = (Button)findViewById(R.id.button1);
		button1.setOnClickListener(new OnClickListener() {
			//第一种方式：匿名内部内实现的按钮点击事件
			@Override
			public void onClick(View arg0) {
				// TODO Auto-generated method stub
				Toast.makeText(MainActivity.this, "匿名内部内实现的按钮点击事件", Toast.LENGTH_SHORT).show();
			}
		});
		
		
		button2 = (Button)findViewById(R.id.button2);
		button2.setOnClickListener(this);
		
		//第三种：创建实例化接口对象
		button3 = (ImageButton)findViewById(R.id.button3);
		OnClickListener listener = new OnClickListener(){

			@Override
			public void onClick(View arg0) {
				// TODO Auto-generated method stub
				Toast.makeText(MainActivity.this, "创建实例化接口对象", Toast.LENGTH_SHORT).show();
			}
		};
		button3.setOnClickListener(listener);
		
		
		//第四种方式：使用内部类
		button4 = (Button)findViewById(R.id.button4);
		button4.setOnClickListener(new MyOnClickListener());
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

	//另外一种方式：实现View.onClickListener接口实现接口中的onClick()方法
	@Override
	public void onClick(View arg0) {
		// TODO Auto-generated method stub
		switch(arg0.getId()){
		case R.id.button2:
			Toast.makeText(this, "实现View.onClickListener接口实现接口中的onClick()方法",Toast.LENGTH_SHORT).show();
			break;
		}
	}
	
	
	class MyOnClickListener implements OnClickListener{

		@Override
		public void onClick(View arg0) {
			// TODO Auto-generated method stub
			Toast.makeText(MainActivity.this, "内部类的方式", Toast.LENGTH_SHORT).show();
		}
		
	}
	
	
	//第五种方式：自己定义方法：配置android:onClick属性
	public void onButton(View view){
		switch(view.getId()){
		case R.id.button5:
			Toast.makeText(this, "自己定义方法，配置android:onClick属性", Toast.LENGTH_SHORT).show();
			break;
		}
	}
	
	
	public void onButton7(View view){
		Toast.makeText(this, "aaaaaaaaaaaaaaaaaaaaa", Toast.LENGTH_SHORT).show();
		setContentView(R.layout.activity_main2);
	}

}