RadioButton实现多选一

 1     <RadioGroup
 2         android:id="@+id/radioGroup1"
 3         android:layout_width="match_parent"
 4         android:layout_height="wrap_content" >
 5 
 6         <RadioButton
 7             android:layout_width="wrap_content"
 8             android:layout_height="wrap_content"
 9             android:text="男"
10             android:textColor="#FFFFFF" />
11 
12         <RadioButton
13             android:layout_width="wrap_content"
14             android:layout_height="wrap_content"
15             android:text="女"
16             android:textColor="#FFFFFF" />
17     </RadioGroup>

 1 public void onClick(View v) {
 2                 // TODO Auto-generated method stub
 3                 int len = radioGroup1.getChildCount();
 4                 for (int i = 0; i < len; i++) {
 5                     RadioButton radio = (RadioButton) radioGroup1.getChildAt(i);11                 }
12             }

1 if (radio.isChecked()) {

4                         break;
5                     }

1 Toast.makeText(Activity01.this, radio.getText(),
2                                 Toast.LENGTH_LONG).show();

 1 package fry;
 2 
 3 import com.example.RadioButtonDemo1.R;
 4 
 5 import android.app.Activity;
 6 import android.os.Bundle;
 7 import android.view.View;
 8 import android.view.View.OnClickListener;
 9 import android.widget.Button;
10 import android.widget.RadioButton;
11 import android.widget.RadioGroup;
12 import android.widget.TextView;
13 import android.widget.Toast;
14 
15 public class Activity01 extends Activity {
16     private Button btn_chooseGender;
17     private RadioGroup radioGroup1;
18     private TextView tv_answer;
19 
20     @Override
21     protected void onCreate(Bundle savedInstanceState) {
22         // TODO Auto-generated method stub
23         super.onCreate(savedInstanceState);
24         setContentView(R.layout.activity01);
25 
26         btn_chooseGender = (Button) findViewById(R.id.btn_chooseGender);
27         radioGroup1 = (RadioGroup) findViewById(R.id.radioGroup1);
28         tv_answer = (TextView) findViewById(R.id.tv_answer);
29         /*
30          * RadioButton实现多选一方法
31          * 1、将多个RadioButton放在一个RadioGroup里面
32          * 2、在RadioGroup里面取出每个RadioButton 
33          * 3、检查每个RadioButton是否被选取
34          * 4、取出被选取的那个RadioButton里面的值
35          */
36         btn_chooseGender.setOnClickListener(new OnClickListener() {
37 
38             @Override
39             public void onClick(View v) {
40                 // TODO Auto-generated method stub
41                 int len = radioGroup1.getChildCount();
42                 for (int i = 0; i < len; i++) {
43                     RadioButton radio = (RadioButton) radioGroup1.getChildAt(i);
44                     if (radio.isChecked()) {
45                         Toast.makeText(Activity01.this, radio.getText(),
46                                 Toast.LENGTH_LONG).show();
47                         break;
48                     }
49                 }
50             }
51         });
52     }
53 }

 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:background="@android:color/black"
 6     android:orientation="vertical" >
 7 
 8     <TextView
 9         android:layout_width="match_parent"
10         android:layout_height="wrap_content"
11         android:text="性别"
12         android:textAppearance="?android:attr/textAppearanceLarge"
13         android:layout_gravity="center_horizontal"
14         android:textColor="#FFFFFF" />
15 
16     <RadioGroup
17         android:id="@+id/radioGroup1"
18         android:layout_width="match_parent"
19         android:layout_height="wrap_content" >
20 
21         <RadioButton
22             android:layout_width="wrap_content"
23             android:layout_height="wrap_content"
24             android:text="男"
25             android:textColor="#FFFFFF" />
26 
27         <RadioButton
28             android:layout_width="wrap_content"
29             android:layout_height="wrap_content"
30             android:text="女"
31             android:textColor="#FFFFFF" />
32     </RadioGroup>
33 
34     <Button 
35         android:id="@+id/btn_chooseGender"
36         android:layout_width="match_parent"
37         android:layout_height="wrap_content"
38         android:text="选择性别"
39         android:textColor="#FFFFFF" />
40         />
41         
42     <TextView
43         android:id="@+id/tv_answer"
44         android:layout_width="match_parent"
45         android:layout_height="wrap_content"
46         android:text=""
47         android:textAppearance="?android:attr/textAppearanceLarge"
48         android:layout_gravity="center_horizontal"
49         android:textColor="#FFFFFF" />
50 </LinearLayout>