Android Tutorial – Example of Using CheckBox button

In this tutorial we will teach you about CheckBox button in Android Application Development. How they are used and how they can be implemented in Android Application.

CheckBox button – it is a two states button in Android i.e. it can be work in checked or unchecked state and it can perform corresponding tasks/operation according to its state.

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Example code showing the use of CheckBox button

In this example code we will make an android application which will show toast message “I am checked” when checkbox button is checked and will show toast message “I am unchecked” when checkbox button is unchecked.

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In this example we use two functions:

  1. setOnCheckedChangeListener(this): this function work is to check/listen the change in the state of the CheckBox button during operation.
  2. isChecked(): this function work is to state/check whether the checkbox is in checked state or in unchecked state.If the value of this function is true that means checkbox button is in checked state otherwise it is in unchecked state.

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Now create a new project named as ‘CheckBox’, give the name ‘CheckActivity’ to your activity and give the name ‘activity_check’ to your layout.

Edit your activity_check.xml

This is the layout for our project which displays chechbox button and user interface on the screen


<RelativeLayout xmlns:android=“”




tools:context=“.CheckActivity” >











android:text=“CheckBox” />



Edit your

This is the java class of our project where implementation of our task is done using two functions i.e. setOnCheckedChangeListener(this) and isChecked() on CheckBox button.

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package com.youthgiri.checkbox;

import android.os.Bundle;


import android.view.Menu;

import android.widget.CheckBox;

import android.widget.CompoundButton;

import android.widget.CompoundButton.OnCheckedChangeListener;

import android.widget.Toast;


public class CheckActivity extends Activity implements OnCheckedChangeListener {

CheckBox c;


protected void onCreate(Bundle savedInstanceState) {



c = (CheckBox)findViewById(;






public void onCheckedChanged(CompoundButton arg0, boolean arg1) {

// TODO Auto-generated method stub


Toast.makeText(this, “I am checked”, 0).show();



Toast.makeText(this, “I am unchecked”, 0).show();




 Now the run application on emulator and it will be like this.




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