onClick()方法的应用

package com.x;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.LinearLayout;

public class OnClickDemoActivity extends Activity implements OnClickListener{
/** Called when the activity is first created. */
private final int mystyle=ViewGroup.LayoutParams.WRAP_CONTENT; //显示风格
private int count1=0;
private int count2=0;
private Button button1;
private Button button2;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
LinearLayout linearLayout=new LinearLayout(this); //线性布局
linearLayout.setOrientation(LinearLayout.VERTICAL); //垂直布局
setContentView(linearLayout); //采用设定的布局
button1=new Button(this);
button1.setText("按钮1");
button1.setOnClickListener(this);
linearLayout.addView(button1,new LinearLayout.LayoutParams(mystyle,mystyle));

button2=new Button(this);
button2.setText("按钮2");
button2.setOnClickListener(this);
linearLayout.addView(button2,new LinearLayout.LayoutParams(mystyle,mystyle));
}

public void onClick(View v){
if(v==button1){
count1++;
if(count1==5)
finish();
else
button1.setText("被单击的次数是："+count1);
}
if(v==button2){
count2++;
if(count2==5)
finish();
else
button2.setText("被单击的次数是："+count2);
}
}
}

 

运行结果：

 

注：Button上的数字为点击按钮的次数，当点击的次数达到5时，将退出程序。