Location tracking stops after a while when app is in the background

user_603127 0
Viewed 17980

I've created a simple app which tracks user location and creates local notification for every time location is updated.

I enabled the background modes below,

enter image description here

let locationManager = CLLocationManager()

open override func viewDidLoad() {
       locationManager.delegate = self;
       locationManager.desiredAccuracy = kCLLocationAccuracyBest;
       locationManager.distanceFilter = 10
       locationManager.allowsBackgroundLocationUpdates = true
       locationManager.startUpdatingLocation()
}

open func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
       let notification = UILocalNotification()
       notification.alertBody = "location updated"
       notification.fireDate = Date()
       UIApplication.shared.scheduleLocalNotification(notification)
}

I set string for NSLocationAlwaysUsageDescription and ask for permission. User grant permission for always usage when the app loaded first time.

It's working well when app is in the foreground, when it goes background still working at least in 5-40 minutes time range which is changeable by battery or other opened apps.

The problem is why it stops working, Isn't it expected to be keep working?

I've never seen a time limit in Apple docs.

cllocationmanager core-location swift ios
6 Answers

I ran into this where a QT app would stop getting location events in the background after an hour or two.

In the App Delegate when the app would go into the background I would stop the CLLocationManager, decrease the Accuracy from kCLLocationAccuracyBest to kCLLocationAccuracyNearestTenMeters AND increase the distance filter from None to 50 meters and it would then track for 24+ hours.

user_27443240
Related