core-location

Periodic iOS background location updates

It seems that stopUpdatingLocation is what triggers the background watchdog timer, so I replaced it in didUpdateLocation with: [self.locationManager setDesiredAccuracy:kCLLocationAccuracyThreeKilometers]; [self.locationManager setDistanceFilter:99999]; which appears to effectively power down the GPS. The selector for the background NSTimer then becomes: – (void) changeAccuracy { [self.locationManager setDesiredAccuracy:kCLLocationAccuracyBest]; [self.locationManager setDistanceFilter:kCLDistanceFilterNone]; } All I’m doing is periodically toggling the accuracy … Read more

How do I get a background location update every n minutes in my iOS application?

I found a solution to implement this with the help of the Apple Developer Forums: Specify location background mode Create an NSTimer in the background with UIApplication:beginBackgroundTaskWithExpirationHandler: When n is smaller than UIApplication:backgroundTimeRemaining it will work just fine. When n is larger, the location manager should be enabled (and disabled) again before there is no … Read more