CheckBox的OnCheckedChangeListener事件

让CheckBox二选一

布局文件

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.test.MainActivity" >

   <CheckBox  
        android:id="@+id/football"  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:layout_alignParentLeft="true"  
        android:layout_below="@+id/gender"  
        android:text="足球" />  
    <CheckBox  
        android:id="@+id/basketball"  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:layout_alignParentLeft="true"  
        android:layout_below="@+id/football"  
        android:text="蓝球" /> 

</RelativeLayout>

这是代码：

package com.example.test;

import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity {

    private CheckBox cbFootBall;
    private CheckBox cbBasketBall;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        cbFootBall = (CheckBox) super.findViewById(R.id.football);
        cbBasketBall = (CheckBox) super.findViewById(R.id.basketball);
        
        //给cbFootBall注册OnCheckedChangeListener事件  
        cbFootBall.setOnCheckedChangeListener(new BootBallOnCheckedChangeListener());
        // 给cbBasketBall注册OnCheckedChangeListener事件
        cbBasketBall.setOnCheckedChangeListener(new BasketBallOnCheckedChangeListener());
    }

    private class BootBallOnCheckedChangeListener implements CompoundButton.OnCheckedChangeListener {

        public void onCheckedChanged(CompoundButton button, boolean isChecked) {
            String str = "";
            if (isChecked) {
                cbBasketBall.setChecked(false);    //    设置cbBasketBall的选中状态为false
                str = cbFootBall.getText().toString();
                Toast.makeText(getApplicationContext(), "您的爱好是：" + str,0).show();
            }
        }
    }

    private class BasketBallOnCheckedChangeListener implements CompoundButton.OnCheckedChangeListener {

        public void onCheckedChanged(CompoundButton button, boolean isChecked) {
            String str = "";
            if (cbBasketBall.isChecked()) {
                cbFootBall.setChecked(false);    //    设置cbFootBall的选中状态为false
                str = cbBasketBall.getText().toString();
                Toast.makeText(getApplicationContext(), "您的爱好是：" + str, 0).show();
            }
        }
    }
}