Android编程单选项框RadioGroup综合应用示例

<?xml version="1.0" encoding="utf-8"?>
<resources>
 <string name="hello">Hello World, RadioGroupDemo</string>
 <string name="app_name">RadioGroupDemo</string>
 <string name="tr_radio_op1">帅哥</string>
 <string name="tr_radio_op2">美女</string>
 <string name="str_radio_question1">请问你是？</string>
</resources>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:Android="http://schemas.android.com/apk/res/android"
 android:orientation="vertical"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent"
 >
 <!--第一個TextView -->
 <TextView
  android:id="@+id/myTextView"
  android:layout_width="228px"
  android:layout_height="49px"
  android:text="@string/str_radio_question1"
  android:textSize="30sp"
 />
 <!--建立一個RadioGroup -->
 <RadioGroup
  android:id="@+id/myRadioGroup"
  android:layout_width="137px"
  android:layout_height="216px"
  android:orientation="vertical"
  >
  <!--第一個RadioButton -->
  <RadioButton
   android:id="@+id/myRadioButton1"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:text="@string/tr_radio_op1"
  />
  <!--第二個RadioButton -->
  <RadioButton
   android:id="@+id/myRadioButton2"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:text="@string/tr_radio_op2"
  />
  </RadioGroup>
</LinearLayout>

package com.android.test;
import android.app.Activity;
import android.os.Bundle;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;
public class RadioGroupDemo extends Activity
{
 public TextView mTextView1;
 public RadioGroup mRadioGroup1;
 public RadioButton mRadio1,mRadio2;
 public void onCreate(Bundle savedInstanceState)
 {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  /*取得 TextView、RadioGroup、RadioButton对象*/
  mTextView1 = (TextView) findViewById(R.id.myTextView);
  mRadioGroup1 = (RadioGroup) findViewById(R.id.myRadioGroup);
  mRadio1 = (RadioButton) findViewById(R.id.myRadioButton1);
  mRadio2 = (RadioButton) findViewById(R.id.myRadioButton2);
  /*RadioGroup用OnCheckedChangeListener来运行*/
  mRadioGroup1.setOnCheckedChangeListener(mChangeRadio);
 }
 private RadioGroup.OnCheckedChangeListener mChangeRadio = new
      RadioGroup.OnCheckedChangeListener()
 {
  @Override
  public void onCheckedChanged(RadioGroup group, int checkedId)
  {
   // TODO Auto-generated method stub
   if(checkedId==mRadio1.getId())
   {
    /*把mRadio1的内容传到mTextView1*/
    mTextView1.setText(mRadio1.getText());
   }
   else if(checkedId==mRadio2.getId())
   {
    /*把mRadio2的内容传到mTextView1*/
    mTextView1.setText(mRadio2.getText());
   }
  }
 };
}