·         Start a new project, named RadioButtonDemo.

·         Open the res/layout/main.xml file and add two RadioButtons, nested in a RadioGroup (inside the LinearLayout):

<?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 android:layout_width="fill_parent"

                 android:layout_height="wrap_content"

                 android:orientation="vertical" >

               <RadioButton android:id="@+id/radio_male"

                             android:layout_width="wrap_content"

                             android:layout_height="wrap_content"

                             android:text="Male"/>

               <RadioButton android:id="@+id/radio_female"

                             android:layout_width="wrap_content"

                             android:layout_height="wrap_content"

                             android:text="Female"/>

    </RadioGroup>

</LinearLayout>

·     Now when each RadioButton is selected, you need a View.OnClickListener. so add the following code in the Activity:

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.RadioButton;

import android.widget.Toast;

  

public class RadioButtonActivity  extends Activity {

       

        private OnClickListener  radioListener=  new OnClickListener() {

               public void onClick(View v) {

                     RadioButton rb=(RadioButton)v;

                     Toast.makeText(RadioButtonActivity.this, rb.getText(), 

                                                           Toast.

                                                          Toast.LENGTH_SHORT).show();

              }

       };

       

     @Override

     public void onCreate(Bundle savedInstanceState) {

         super.onCreate(savedInstanceState);

         setContentView(R.layout.main);

         final RadioButton radioMale=(RadioButton)findViewById(R.id.radio_male);

         final RadioButton radioFemale=(RadioButton)findViewById(R.id.radio_female);

         radioMale.setOnClickListener(radioListener);

         radioFemale.setOnClickListener(radioListener);

    }

}

·         Run the application

Your output is something like below:

When any radio button is selected by the user, the radiobutton text will display in the toast message.