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：