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。

 

 1 package com.genwoxue.oncheckedchanged;

 2 

 3 import android.os.Bundle;

 4 import android.app.Activity;

 5 import android.widget.RadioGroup;

 6 import android.widget.RadioButton;

 7 import android.widget.RadioGroup.OnCheckedChangeListener;              //引入OnCheckedChangeListener事件相关包

 8 import android.widget.CheckBox;

 9 import android.widget.CompoundButton;

10 import android.widget.Toast;

11 

12 

13 public class MainActivity extends Activity {

14     private RadioGroup GenderGroup=null;

15     private RadioButton rbMale=null;

16     private RadioButton rbFemale=null;

17     private CheckBox cbFootBall=null;

18     private CheckBox cbBasketBall=null;

19     

20     @Override

21     protected void onCreate(Bundle savedInstanceState) {

22         super.onCreate(savedInstanceState);

23         setContentView(R.layout.activity_main);

24         

25         GenderGroup=(RadioGroup)super.findViewById(R.id.gender);

26         rbMale=(RadioButton)super.findViewById(R.id.male);

27         rbFemale=(RadioButton)super.findViewById(R.id.female);

28         cbFootBall=(CheckBox)super.findViewById(R.id.football);

29         cbBasketBall=(CheckBox)super.findViewById(R.id.basketball);

30         //在GenderGroup注册OnCheckedChangeListener事件

31                   GenderGroup.setOnCheckedChangeListener(new GenderOnCheckedChangeListener());

32                   //在cbFootBall注册OnCheckedChangeListener事件

33         cbFootBall.setOnCheckedChangeListener(new BootBallOnCheckedChangeListener());

34                   //在cbBasketBall注册OnCheckedChangeListener事件

35 

36         cbBasketBall.setOnCheckedChangeListener(new BasketBallOnCheckedChangeListener());

37     }

38     

39     private class GenderOnCheckedChangeListener implements OnCheckedChangeListener{

40         @Override

41         public void onCheckedChanged(RadioGroup group,int checkedId){

42             String sGender="";

43             if(rbFemale.getId()==checkedId){

44                 sGender=rbFemale.getText().toString();

45             }

46             if(rbMale.getId()==checkedId){

47                 sGender=rbMale.getText().toString();

48             }

49             Toast.makeText(getApplicationContext(), "您选择的性别是："+sGender, Toast.LENGTH_LONG).show();

50         }

51         

52     }

53     

54     private class BootBallOnCheckedChangeListener implements CompoundButton.OnCheckedChangeListener{

55         @Override

56         public void onCheckedChanged(CompoundButton button, boolean isChecked){

57             String sFav="";

58             if(isChecked){

59                 sFav=cbFootBall.getText().toString();

60                 sFav=sFav+"选中！";

61             }

62             else

63                 sFav=sFav+"未迁中";

64             Toast.makeText(getApplicationContext(), "您选择的爱好是："+sFav, Toast.LENGTH_LONG).show();

65         }

66     }

67     

68     private class BasketBallOnCheckedChangeListener implements CompoundButton.OnCheckedChangeListener{

69         @Override

70         public void onCheckedChanged(CompoundButton button,boolean isChecked){

71             String sFav="";

72             if(cbBasketBall.isChecked()){

73                 sFav=cbBasketBall.getText().toString();

74                 sFav=sFav+"选中！";

75             }

76             else

77                 sFav=sFav+"未迁中";

78             Toast.makeText(getApplicationContext(), "您选择的爱好是："+sFav, Toast.LENGTH_LONG).show();

79         }

80     }

81     

82 }

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：