0112常用控件+RadioGroup+CheckBox+提示语用法TOAST

<RadioGroup>单选按钮的组

要确定哪些单选按钮<RadioButton>在同一个组中

对单选按钮绑定的是RadioGroup而不是RadioButton

输入new RadioGroup后自动生成匿名内部类

genderGroup.setOnCheckedChangeListener(new

RadioGroup.OnCheckedChangeListener() {

@Override

public void onCheckedChanged(RadioGroup group,

int checkedId) {

// TODO Auto-generated method stub

//1哪一组里面的控件被点击了将会传进去

//2组里的哪一个RadioButton被点击了传进去，

即用户所点击的id

if(femaleButton.getId()==checkedId)

{System.out.println("female");}

else if (maleButton.getId()==checkedId)

{System.out.println("male");}

}

});

<Checkbox>的使用

不存在组的概念

提示语用法TOAST

Toast.makeText(RadioTest.this, "你已经选择了female", Toast.LENGTH_LONG).show();

RadioTest.java

  1 package com.example.mars_activity07;
  2 
  3 import android.os.Bundle;
  4 import android.widget.CheckBox;
  5 import android.widget.CompoundButton;
  6 import android.widget.RadioButton;
  7 import android.widget.RadioGroup;
  8 import android.widget.Toast;
  9 import android.app.Activity;
 10 
 11 
 12 public class RadioTest extends Activity {
 13 
 14     private RadioGroup genderGroup;
 15     private RadioButton femaleButton;
 16     private RadioButton maleButton;
 17     private CheckBox swim;
 18     private CheckBox run;
 19     private CheckBox read;
 20     
 21     @Override
 22     protected void onCreate(Bundle savedInstanceState) {
 23         super.onCreate(savedInstanceState);
 24         setContentView(R.layout.radio);
 25         genderGroup=(RadioGroup)findViewById(R.id.genderGroup);
 26         femaleButton=(RadioButton)findViewById(R.id.femaleButton);
 27         maleButton=(RadioButton)findViewById(R.id.maleButton);
 28         swim=(CheckBox)findViewById(R.id.swim);
 29         run=(CheckBox)findViewById(R.id.run);
 30         read=(CheckBox)findViewById(R.id.read);
 31         //绑定监听器，这里需要绑定的是RadioGroup
 32         //匿名内部类
 33         //查阅api知道OncheckedChangeListener是RG一个接口
 34         genderGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
 35             
 36             @Override
 37             public void onCheckedChanged(RadioGroup group, int checkedId) {
 38                 // TODO Auto-generated method stub
 39                 //1哪一组里面的控件被点击了将会传进去
 40                 //2组里的哪一个RadioButton被点击了传进去，即用户所点击的id
 41                 if(femaleButton.getId()==checkedId)
 42                 {System.out.println("female");
 43                 Toast.makeText(RadioTest.this, "你已经选择了female", Toast.LENGTH_LONG).show();
 44                 }
 45                 else if (maleButton.getId()==checkedId)
 46                 {System.out.println("male");}
 47                 
 48                     
 49                 
 50             }
 51         });
 52         //为多选按钮添加监听器，与Radio是对一组绑定，而这个需要对每一个按钮绑定，他们的绑定方式与之前的button也不同
 53         swim.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
 54             
 55             @Override
 56             public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
 57                 // TODO Auto-generated method stub
 58                 
 59                 if(isChecked)
 60                 {
 61                     System.out.println("swim");
 62                 }
 63                 
 64             }
 65         });
 66         
 67         run.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
 68             
 69             @Override
 70             public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
 71                 // TODO Auto-generated method stub
 72                 if(isChecked)
 73                 {
 74                     System.out.println("run");
 75                 }
 76                 
 77             }
 78         });
 79         
 80         read.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
 81             
 82             @Override
 83             public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
 84                 // TODO Auto-generated method stub
 85                 if(isChecked)
 86                 {
 87                     System.out.println("read");
 88                 }
 89                 
 90             }
 91         });
 92         
 93     
 94     
 95         
 96         
 97         
 98 
 99     
100      
101     }
102 
103     
104     
105 }

radio.xml

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5     android:orientation="vertical" >
 6     <RadioGroup
 7         android:id="@+id/genderGroup"
 8         android:layout_height="wrap_content"
 9         android:layout_width="wrap_content"
10         android:orientation="vertical">
11         <RadioButton
12             android:id="@+id/femaleButton"
13             android:layout_height="wrap_content"
14             android:layout_width="wrap_content"
15             android:text="@string/female"/>
16         <RadioButton
17             android:id="@+id/maleButton"
18             android:layout_height="wrap_content"
19             android:layout_width="wrap_content"
20             android:text="@string/male"/>
21         <RadioButton
22             android:id="@+id/uncertainButton"
23             android:layout_height="wrap_content"
24             android:layout_width="wrap_content"
25             android:text="@string/uncertain"/>
26         
27         "
28     </RadioGroup> 
29     
30     
31     <CheckBox 
32         android:id="@+id/swim"
33         android:layout_height="wrap_content"
34         android:layout_width="wrap_content"
35         android:text="@string/swim"
36         />
37     
38     
39      <CheckBox 
40         android:id="@+id/run"
41         android:layout_height="wrap_content"
42         android:layout_width="wrap_content"
43         android:text="@string/run"
44         />
45     
46      <CheckBox 
47         android:id="@+id/read"
48         android:layout_height="wrap_content"
49         android:layout_width="wrap_content"
50         android:text="@string/read"
51         />
52     
53 </LinearLayout>