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：