1. sylsau's Avatar
    Hello,

    I create that thread to present you a tutorial showing you how to create a a Countdown Timer on Android. The tutorial is also available on my website here : Learn to create a Countdown Timer on Android .

    Sometimes, when you make Android applications, you need to create a countdown. It can be useful in a board game for example if the player have a defined time to play.

    A lot of solutions exist to create a countdown in Java. Some are more complex than other.

    On Android, the SDK offers to developers an easy way to create a countdown timer : a dedicated class named CountDownTimer.

    1/ Create the CountDown Timer

    Here, we consider a countdown of 60 seconds. So, we need to use the following code to create the CountDownTimer instance :

    Code:
    CountDownTimer countDownTimer = new CountDownTimer(60 * 1000, 1000) {
       public void onTick(long millisUntilFinished) {
          mTextField.setText("Seconds remaining: " + millisUntilFinished / 1000);
       }
       public void onFinish() {
          mTextField.setText("Done !");
       }
    };
    The second parameter lets you to define at which interval you must be notified during the countdown. You can update your User Interface in that method.

    2/ Manage your CountDown Timer

    Once you have created your CountDownTimer object, you have to manage it. First, you can start it :

    Code:
    countDownTimer.start();
    If you want to cancel your countdown timer before its end, you have just to call its cancel() method :

    Code:
    countDownTimer.cancel();
    3/ Conclusion

    Powerful and easy to use, the CountDownTimer class is the ideal solution to create countdown timer on Android.

    4/ Extra

    You can also enjoy this tutorial on Youtube :



    Don't hesitate to give me your feedbacks and ideas for new tutorials.

    Thanks.

    Sylvain
    B. Diddy likes this.
    08-02-2016 01:28 AM
  2. B. Diddy's Avatar
    Excellent--thanks for posting this!
    08-02-2016 11:33 AM

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