Hello guys! In this tutorial, we will learn how to make a countdown timer but when the app was close, the timer keeps running.<br />Listening is only performed while the activity is running. That's mean you must register to listen before the main activity running and unregister after the main activity close<br /><br />All Notes:- https://kayraaprogramming.com/<br /><br />this part source code :-<br />https://kayraaprogramming.com/countdown-timer-keep-timer-running-when-closing-the-app-android-studio-tutorial/
