Working with RadioButton

ScreenShots:

 

 

 

activity_main.xml:
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/RelativeLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:text="Developed by Shrikant" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/textView1"
        android:text="Select Gender:"
        android:textAppearance="?android:attr/textAppearanceMedium" />

    <RadioGroup
        android:id="@+id/radioGroup1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/textView2"
        android:orientation="horizontal" >

        <RadioButton
            android:id="@+id/femaleradio"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Female" />

        <RadioButton
            android:id="@+id/maleradio"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Male" />
    </RadioGroup>

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/radioGroup1"
        android:text="Submit" />

</RelativeLayout>

MainActivity.java:
package com.shrikant.radiobutton;

import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Toast;
import android.view.View.OnClickListener;
public class MainActivity extends Activity {
RadioGroup rg;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button btn=(Button)findViewById(R.id.button1);
        rg=(RadioGroup)findViewById(R.id.radioGroup1);
        btn.setOnClickListener(new OnClickListener() {
           
            @Override
            public void onClick(View v) {
                int id=rg.getCheckedRadioButtonId();
                RadioButton rb=(RadioButton)findViewById(id);
               
                String gender=rb.getText().toString();
                Toast.makeText(getApplicationContext(),gender+"Selected", Toast.LENGTH_LONG).show();
               
            }
        });
    }
  
}