Can't endBackgroundTask: no background task exists with identifier, or it may have already been ended

Question

I am using background task to run the timer in the background to update the user\'s location. It\'s declared as:

UIBackgroundTaskIdentifier bgTask;
         


        

Answer 1

I had the same issue and figured out the cause and solution!

Apple has fixed this issue in iOS 13.4 GM though I have workaround for the earlier versions.

While you should embrace using scenes when your app is run under iOS 13 and later, you can fully opt-out while you still support iOS 12 or earlier.

1. First, completely remove the “Application Scene Manifest” entry from Info.plist.
2. If there is a scene delegate class, remove it.
3. If there are any scene related methods in your app delegate, remove those methods.
4. If missing, add the property var window: UIWindow? to your app delegate.
5. Your app should now only use the app delegate and under iOS 13 it should have the same life cycle as iOS 12.

Happy coding!