Saturday, May 16, 2020

CountDownTimer in Android Example

What is a CountDownTimer ? 

A CountDownTimer  is a class in Android which enables us to do something at regular intervals.

There are 2 important methods on CountDownTimer  Class

1: onTick(long)  : in this method we write code to do something at regular intervals
2: onFinish() : code to execute when timer ends.

Example :

In our example, we assume that have given some task to user to finish in 10 seconds.

We will show count 1, 2, 3 ... and on till 10th seconds and show "Time Over" when 10 seconds ends.

Lets Start :

Create a new Project


<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android=""   
 android:orientation="vertical" >

       android:text="Time Starts" />


import android.os.Bundle;
import android.os.CountDownTimer;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity

    TextView textViewCounter;
    int counter = 0;
    CountDownTimer myTimer = new CountDownTimer(10000, 1000) {
        public void onTick(long l) {

            // set the counter and increase it by 1          

       public void onFinish() {

            textViewCounter.setText("Time Over");

    @Override    protected void onCreate(Bundle savedInstanceState)

        textViewCounter = (TextView)findViewById(;

        // start the timer       



Result :


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