android 中单选和复选框监听操作

单选按钮RadioGroup、复选框CheckBox都有OnCheckedChangeListener事件，我们一起了解一下。

 package com.genwoxue.oncheckedchanged;

 import android.os.Bundle;
 import android.app.Activity;
 import android.widget.RadioGroup;
 import android.widget.RadioButton;
 import android.widget.RadioGroup.OnCheckedChangeListener;              //引入OnCheckedChangeListener事件相关包
 import android.widget.CheckBox;
 import android.widget.CompoundButton;
 import android.widget.Toast;

 public class MainActivity extends Activity {
     private RadioGroup GenderGroup=null;
     private RadioButton rbMale=null;
     private RadioButton rbFemale=null;
     private CheckBox cbFootBall=null;
     private CheckBox cbBasketBall=null;

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

         GenderGroup=(RadioGroup)super.findViewById(R.id.gender);
         rbMale=(RadioButton)super.findViewById(R.id.male);
         rbFemale=(RadioButton)super.findViewById(R.id.female);
         cbFootBall=(CheckBox)super.findViewById(R.id.football);
         cbBasketBall=(CheckBox)super.findViewById(R.id.basketball);
         //在GenderGroup注册OnCheckedChangeListener事件
                   GenderGroup.setOnCheckedChangeListener(new GenderOnCheckedChangeListener());
                   //在cbFootBall注册OnCheckedChangeListener事件
         cbFootBall.setOnCheckedChangeListener(new BootBallOnCheckedChangeListener());
                   //在cbBasketBall注册OnCheckedChangeListener事件

         cbBasketBall.setOnCheckedChangeListener(new BasketBallOnCheckedChangeListener());
     }

     private class GenderOnCheckedChangeListener implements OnCheckedChangeListener{
         @Override
         public void onCheckedChanged(RadioGroup group,int checkedId){
             String sGender="";
             if(rbFemale.getId()==checkedId){
                 sGender=rbFemale.getText().toString();
             }
             if(rbMale.getId()==checkedId){
                 sGender=rbMale.getText().toString();
             }
             Toast.makeText(getApplicationContext(), "您选择的性别是："+sGender, Toast.LENGTH_LONG).show();
         }

     }

     private class BootBallOnCheckedChangeListener implements CompoundButton.OnCheckedChangeListener{
         @Override
         public void onCheckedChanged(CompoundButton button, boolean isChecked){
             String sFav="";
             if(isChecked){
                 sFav=cbFootBall.getText().toString();
                 sFav=sFav+"选中！";
             }
             else
                 sFav=sFav+"未迁中";
             Toast.makeText(getApplicationContext(), "您选择的爱好是："+sFav, Toast.LENGTH_LONG).show();
         }
     }

     private class BasketBallOnCheckedChangeListener implements CompoundButton.OnCheckedChangeListener{
         @Override
         public void onCheckedChanged(CompoundButton button,boolean isChecked){
             String sFav="";
             if(cbBasketBall.isChecked()){
                 sFav=cbBasketBall.getText().toString();
                 sFav=sFav+"选中！";
             }
             else
                 sFav=sFav+"未迁中";
             Toast.makeText(getApplicationContext(), "您选择的爱好是："+sFav, Toast.LENGTH_LONG).show();
         }
     }

 }

管单选按钮和复选框都有OnCheckedChange事件，但注意二者区别。

　　效果如下：