How to stop the screen from going to sleep
You can stop the iOS screen sleeping by using the isIdleTimerDisabled property of your application. When set to true, this means the screen will never dim or go to sleep while your app is running, so be careful – you don't want to waste your user's battery life!
Here's an example:
UIApplication.shared.isIdleTimerDisabled = trueAvailable from iOS 2.0
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