CheckBox的OnCheckedChangeListener事件_移动开发_编程开发_程序员俱乐部

让CheckBox二选一

布局文件

 1 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 2     xmlns:tools="http://schemas.android.com/tools"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5     tools:context="com.example.test.MainActivity" >
 6 
 7    <CheckBox  
 8         android:id="@+id/football"  
 9         android:layout_width="wrap_content"  
10         android:layout_height="wrap_content"  
11         android:layout_alignParentLeft="true"  
12         android:layout_below="@+id/gender"  
13         android:text="足球" />  
14     <CheckBox  
15         android:id="@+id/basketball"  
16         android:layout_width="wrap_content"  
17         android:layout_height="wrap_content"  
18         android:layout_alignParentLeft="true"  
19         android:layout_below="@+id/football"  
20         android:text="蓝球" /> 
21 
22 </RelativeLayout>

这是代码：

 1 package com.example.test;
 2 
 3 import android.os.Bundle;
 4 import android.support.v7.app.ActionBarActivity;
 5 import android.widget.CheckBox;
 6 import android.widget.CompoundButton;
 7 import android.widget.Toast;
 8 
 9 public class MainActivity extends ActionBarActivity {
10 
11     private CheckBox cbFootBall;
12     private CheckBox cbBasketBall;
13 
14     @Override
15     protected void onCreate(Bundle savedInstanceState) {
16         super.onCreate(savedInstanceState);
17         setContentView(R.layout.activity_main);
18 
19         cbFootBall = (CheckBox) super.findViewById(R.id.football);
20         cbBasketBall = (CheckBox) super.findViewById(R.id.basketball);
21         
22         //给cbFootBall注册OnCheckedChangeListener事件  
23         cbFootBall.setOnCheckedChangeListener(new BootBallOnCheckedChangeListener());
24         // 给cbBasketBall注册OnCheckedChangeListener事件
25         cbBasketBall.setOnCheckedChangeListener(new BasketBallOnCheckedChangeListener());
26     }
27 
28     private class BootBallOnCheckedChangeListener implements CompoundButton.OnCheckedChangeListener {
29 
30         public void onCheckedChanged(CompoundButton button, boolean isChecked) {
31             String str = "";
32             if (isChecked) {
33                 cbBasketBall.setChecked(false);    //    设置cbBasketBall的选中状态为false
34                 str = cbFootBall.getText().toString();
35                 Toast.makeText(getApplicationContext(), "您的爱好是：" + str,0).show();
36             }
37         }
38     }
39 
40     private class BasketBallOnCheckedChangeListener implements CompoundButton.OnCheckedChangeListener {
41 
42         public void onCheckedChanged(CompoundButton button, boolean isChecked) {
43             String str = "";
44             if (cbBasketBall.isChecked()) {
45                 cbFootBall.setChecked(false);    //    设置cbFootBall的选中状态为false
46                 str = cbBasketBall.getText().toString();
47                 Toast.makeText(getApplicationContext(), "您的爱好是：" + str, 0).show();
48             }
49         }
50     }
51 }