1)/res/layout/main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<RadioGroup
android:id="@+id/radiogroup"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
>
<RadioButton
android:id="@+id/radiobutton1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Radio按鍵1"
android:checked="true"
/>
<RadioButton
android:id="@+id/radiobutton2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Radio按鍵2"
/>
<RadioButton
android:id="@+id/radiobutton3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Radio按鍵3"
/>
</RadioGroup>
</LinearLayout>
2)com.sxt.RadioGroupActivity.java
package com.sxt;
import android.app.Activity;
import android.os.Bundle;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.RadioGroup.OnCheckedChangeListener;
import android.widget.Toast;
public class RadioGroupActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
RadioGroup radioGroup = (RadioGroup)this.findViewById(R.id.radiogroup);
final RadioButton radioButton1 = (RadioButton)this.findViewById(R.id.radiobutton1);
final RadioButton radioButton2 = (RadioButton)this.findViewById(R.id.radiobutton2);
final RadioButton radioButton3 = (RadioButton)this.findViewById(R.id.radiobutton3);
radioGroup.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
// TODO Auto-generated method stub
if(checkedId == radioButton1.getId())
{
Toast.makeText(RadioGroupActivity.this, "radio button id1:"+checkedId, Toast.LENGTH_SHORT).show();
}
if(checkedId == radioButton2.getId())
{
Toast.makeText(RadioGroupActivity.this, "radio button id2:"+checkedId, Toast.LENGTH_SHORT).show();
}
if(checkedId == radioButton3.getId())
{
Toast.makeText(RadioGroupActivity.this, "radio button id3:"+checkedId, Toast.LENGTH_SHORT).show();
}
}
});
}
}
3)如圖