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iOS Timer Tutorial | raywenderlich.com

In this iOS Timer tutorial, you’ll learn how timers work, affect UI responsiveness and battery and how to work with animations using CADisplayLink.


This is a companion discussion topic for the original entry at https://www.raywenderlich.com/113835-ios-timer-tutorial

Am I missing something or is this tutorial showing that a regular timer is not running in the background but fails to explain how such a task would be implemented if the timer would need to run in the background?