I am currently testing the background location mode in iOS 13, as I want to track the user´s location and motion (using the CMMotionManager) in the background. Therefore, i have my own (singleton) class handling the location tracking. I initialize the CLLocationManager in the following way:
func initializeLocationManager() -> CLLocationManager {
let manager = locationManager ?? CLLocationManager()
manager.delegate = self manager.requestAlwaysAuthorization()
manager.allowsBackgroundLocationUpdates = true
manager.pausesLocationUpdatesAutomatically = false
manager.distanceFilter = kCLDistanceFilterNone
manager.desiredAccuracy = kCLLocationAccuracyBest
manager.activityType = .other
return manager
}Then I start the following services:
func startLocationServices() {
...
locationManager.startUpdatingLocation()
locationManager.startMonitoringVisits()
locationManager.startMonitoringSignificantLocationChanges()
...
}In addition, I implemented the CLLocationManagerDelegate-methods didChangeAuthorization(), didUpdateLocation().
In the .plist-file I appended the following entries:<key>NSLocationAlwaysAndWhenInUseUsageDescription</key>
<string>...</string>
<key>NSLocationWhenInUseUsageDescription</key>
<string>...</string>
<key>UIBackgroundModes</key>
<array>
<string>location</string>
</array>In my view controller, I call the startLocationServices. Currently, I set the app's authorization to track location data to ".authorizedAlways"
The location updates stop after approximately 60 - 130 minutes.
To solve the problem, I already added the didFinishLaunchingWithOptions-function, which triggers the location-updates again:nc application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
if let launchOptions = launchOptions,
let isLocationKey = launchOptions[UIApplication.LaunchOptionsKey.location] as? Bool,
isLocationKey {
restartServices()
}
return true
}When the app gets awoken using this function, I managed to get continuous data on some tests, but sometimes the app was suspended again after a few minutes.
Last, I also tried a timer that restarts the location tracking every 5 minutes, but this does not seem to affect the update-duration at all.
I tested the application on iOS 12 and it gets continuous updates in 5/5 tests. So I guess the problem is related to iOS 13.
So my question is if there is a way of continuously receiving the location updates in the background in iOS13, or is there some option I am missing?
Thanks in advance.
