Radio Button Sample

The code has been written in two files
a) main.xml
b) radioActivity.java

The code is as follows

a) main.xml

<?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">
<RadioGroup xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="wrap_content"
android:layout_height="wrap_content">
<RadioButton android:id="@+id/radio1"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:text="Rock" />
<RadioButton android:id="@+id/radio2"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:text="Scissors" />
<RadioButton android:id="@+id/radio3"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:text="Paper" />
</RadioGroup>
<TextView
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:id = "@+id/textview"/>
</LinearLayout>

b) radioActivity.java

package org.example.radio;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.CompoundButton;

import android.widget.RadioButton;

import android.widget.RadioGroup;

import android.widget.TextView;

import android.widget.RadioGroup.OnCheckedChangeListener;

public class radioActivity extends Activity implements OnClickListener{

/** Called when the activity is first created. */

RadioGroup rg;

RadioButton rd1, rd2, rd3;

TextView tv;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

rd1 = (RadioButton)findViewById(R.id.radio1);

rd2 = (RadioButton)findViewById(R.id.radio2);

rd3 = (RadioButton)findViewById(R.id.radio3);

tv = (TextView)findViewById(R.id.textview);

rd1.setOnClickListener(this);

rd2.setOnClickListener(this);

rd3.setOnClickListener(this);

rd1.setChecked(true);

}

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

switch (v.getId()) {

case R.id.radio1:

tv.setText("Radio Button1 is selected");

break;

case R.id.radio2:

tv.setText("Radio Button2 is selected");

break;

case R.id.radio3:

tv.setText("Radio Button3 is selected");

break;

default:

break;

}

}

}