android_radioButton自学

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" >

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/hello" />
	<RadioGroup
	    android:layout_width="fill_parent"
	    android:layout_height="wrap_content"
	    android:id="@+id/genderRg">
	    
	    <RadioButton 
	        android:layout_width="wrap_content"
	    	android:layout_height="wrap_content"
	   	 	android:id="@+id/maleRb"
	   	 	android:text="@string/maleTxt"/>
	    <RadioButton 
	        android:layout_width="wrap_content"
	    	android:layout_height="wrap_content"
	   	 	android:id="@+id/femaleRb"
	   	 	android:text="@string/femaleTxt"/>
	</RadioGroup>
</LinearLayout>

 

strings.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <string name="hello">性别选择</string>
    <string name="app_name">RadioButton</string>
    <string name="maleTxt">男</string>
    <string name="femaleTxt">女</string>

</resources>

 

RadioButtonActivity.java

package com.qianlong.activity;

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 RadioButtonActivity extends Activity {
	private RadioGroup genderRg;
	private RadioButton maleRb;
	private RadioButton femaleRb;
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        this.genderRg = (RadioGroup) this.findViewById(R.id.genderRg);
        this.maleRb = (RadioButton) this.findViewById(R.id.maleRb);
        this.femaleRb = (RadioButton) this.findViewById(R.id.femaleRb);
        
        this.genderRg.setOnCheckedChangeListener(new OnCheckedChangeListener() {
			
			@Override
			public void onCheckedChanged(RadioGroup group, int checkedId) {
				int maleRbId = RadioButtonActivity.this.maleRb.getId();
				int femaleRbId = RadioButtonActivity.this.femaleRb.getId();
				String youchecked = "您选择了：";
				if(maleRbId == checkedId) {
					youchecked += "男";
					Toast.makeText(RadioButtonActivity.this, youchecked, Toast.LENGTH_SHORT).show();
				}
				if(femaleRbId == checkedId) {
					youchecked += "女";
					Toast.makeText(RadioButtonActivity.this, youchecked, Toast.LENGTH_SHORT).show();
				}
			}
		});
    }
}