android监听器OnClickListener的简单示例

界面为一个textview和一个button，实现点击一下button文本显示加1 (大部分内容eclipse生成，只需添加部分代码)

XML文件：

主程序：

package com.derek.study_clicklistener;

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

public class MainActivity extends Activity {
	
	private Button button;
	private TextView textView;
	int count=0;
	
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        textView=(TextView)findViewById(R.id.textView);
        button=(Button)findViewById(R.id.button);
        button.setText("+1");
        textView.setText("Hello Android World");
        ClickListener clickListener=new ClickListener();
        button.setOnClickListener(clickListener);
    }
    
    class ClickListener implements OnClickListener{

		@Override
		public void onClick(View v) {
			// TODO Auto-generated method stub
			count++;
			textView.setText(count+"");
		}
	
    }

    @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;
    }
    
}