RadioGroup组与onCheckedChanged事件

setOnCheckedChangeListener监听check事件

clearCheck选择状态消除

<?xml version="1.0" encoding="utf-8"?>
<AbsoluteLayout 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"
    android:layout_x="37px"
    android:layout_y="3px"
  />
  <!--建立一個RadioGroup -->
  <RadioGroup
    android:id="@+id/myRadioGroup"
    android:layout_width="137px"
    android:layout_height="216px"
    android:orientation="vertical"
    android:layout_x="3px"
    android:layout_y="54px"
    >
    <!--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"
    />

    <Button
        android:onClick="bt"
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Button" />

    </RadioGroup>  

</AbsoluteLayout>

package com.example.radiogroup;

import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.View;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.RadioGroup.OnCheckedChangeListener;
import android.widget.TextView;

public class MainActivity extends ActionBarActivity {
	public TextView mTextView1;
	public RadioGroup mRadioGroup1;
	public RadioButton mRadio1,mRadio2;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);

		 mTextView1 = (TextView) findViewById(R.id.myTextView);
		 mRadioGroup1 = (RadioGroup) findViewById(R.id.myRadioGroup);
		 mRadio1 = (RadioButton) findViewById(R.id.myRadioButton1);
		 mRadio2 = (RadioButton) findViewById(R.id.myRadioButton2); 

		 mRadioGroup1.setOnCheckedChangeListener(new OnCheckedChangeListener() {

			@Override
			public void onCheckedChanged(RadioGroup group, int checkedId) {
				// TODO Auto-generated method stub
				if(mRadio1.getId() == checkedId){
					mTextView1.setText("nan");
				}else{
					mTextView1.setText("nv");
				}
			}
		});
	}
	public void bt(View view){
		//将选择状态消除掉
		mRadioGroup1.clearCheck();
	}
}