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

Regarding the “Can’t end BackgroundTask: no background task exists with identifier ...” message, as others have said, this can be a red herring, unrelated to what you’re doing.

Regarding your goal of trying to periodically retrieve the user’s location, rather than trying to keep your app running in the background with a timer, you should instead avail yourself of various services for updating the user location in the background, such as the visits location service or the significant change location service. With these services, the OS can wake your app when there is a change in the user’s location.