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Radio Button Example

RadioButton Example
main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.blogspot.csdevbin.radiobutton.Main">
 <RadioGroup
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:id="@+id/genderRadioGrp">
    <RadioButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="male"
        android:id="@+id/radioButton"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="95dp"
        android:checked="false" />

    <RadioButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="female"
        android:id="@+id/radioButton2"
        android:checked="false"
        android:layout_below="@+id/radioButton"
        android:layout_alignLeft="@+id/radioButton"
        android:layout_alignStart="@+id/radioButton" />
 </RadioGroup>
</RelativeLayout>
Main.java
package com.blogspot.csdevbin.radiobutton;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Toast;

public class Main extends AppCompatActivity {


    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        RadioGroup rg = (RadioGroup) findViewById(R.id.genderRadioGrp);
        rg.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {

            public void onCheckedChanged(RadioGroup group, int checkedId) {
                RadioButton radioButton = (RadioButton) findViewById(checkedId);
                String gender = radioButton.getText().toString();
                Toast.makeText(Main.this, "Selected gender is :" + gender, Toast.LENGTH_SHORT)
                        .show();
            }
        });

    }
}

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