Android事件

package com.fish.helloworld;

import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends Activity {

	private TextView m_TextView;
	private backButton_OnClickListener backButtonListener = new backButton_OnClickListener();
	private clearButton_OnClickListener clearButtonListener = new clearButton_OnClickListener();
	
	class backButton_OnClickListener implements OnClickListener{
		public void onClick(View v){
			m_TextView.setText("back");
		}
	}
	
	class clearButton_OnClickListener implements OnClickListener{
		public void onClick(View v){
			m_TextView.setText("clear");
		}
	}
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.skeleton_activity);
		
		m_TextView = (TextView)findViewById(R.id.text1);
		final Button backButton = (Button)findViewById(R.id.back);
		final Button clearButton = (Button)findViewById(R.id.clear);
		
		backButton.setOnClickListener(backButtonListener);
		clearButton.setOnClickListener(clearButtonListener);
	}

}