Android Radio Button Example

Radio Group

          A RadioGroup class is used for set of radio buttons. If we check one radio button that belongs to a radio group, it automatically unchecks any previously checked radio button within the same group.



Step 1).main_activity.xml


 <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="20dp"

    android:paddingLeft="20dp"

    android:paddingRight="20dp"

    android:paddingTop="20dp"

    tools:context=".MainActivity" >

    <TextView

        android:id="@+id/text"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginBottom="10dp"

        android:text="AndroidDhina" />

    <RadioGroup

        android:id="@+id/myRadioGroup"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_below="@+id/text" >

        <RadioButton

            android:id="@+id/apple"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="Apple" />

        <RadioButton

            android:id="@+id/android"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="Android" />

        <RadioButton

            android:id="@+id/silent"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="Java" />

    </RadioGroup>

    <Button

        android:id="@+id/saveBtn"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignLeft="@+id/myRadioGroup"

        android:layout_below="@+id/myRadioGroup"

        android:layout_marginTop="36dp"

        android:text="Save" />

</RelativeLayout>

Step 2).Mainactivity.xml

package com.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.RadioButton;

import android.widget.RadioGroup;

import android.widget.Toast;

public class MainActivity extends Activity {

private RadioGroup radioGroup;

private RadioButton selectedButton;

Button button;

String Value1;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

radioGroup = (RadioGroup) findViewById(R.id.myRadioGroup);

button = (Button) findViewById(R.id.saveBtn);

int r1selectedId = radioGroup.getCheckedRadioButtonId();

selectedButton = (RadioButton) findViewById(r1selectedId);

button .setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) 
      {
try {

Toast.makeText(getApplicationContext(),selectedButton.getText().to                                                   String(),Toast.LENGTH_LONG).show();

  } 

          catch (Exception e) 

                {

           Toast.makeText(getApplicationContext(),"please select any option",                                                       Toast.LENGTH_LONG).show();                                    

}

}

});

}

}