didUpdateLocations only can called once - swift

Question

func startLocationManager() {
if CLLocationManager.locationServicesEnabled() {
locationManager.delegate = self
locationManager.desiredAccuracy = kCLLocationAccuracyHundredMeters
locationManager.startUpdatingLocation()
}
}
After getting location authorization, I called this method in viewDidLoad(), and then thefunc locationManager(_:, didUpdateLocations:) starts to be called.
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
let lastLocation = locations.last!
if lastLocation.timestamp.timeIntervalSinceNow < -5 {
return
}
if lastLocation.horizontalAccuracy < 0 {
return
}
var distance = CLLocationDistance(Double.greatestFiniteMagnitude)
if let location = location {
distance = lastLocation.distance(from: location)
}
if location == nil || location!.horizontalAccuracy > lastLocation.horizontalAccuracy {
location = lastLocation
if location.horizontalAccuracy <= locationManager.desiredAccuracy {
stopLocationManager()
getWeather()
}
} else if location == nil || distance < 1 {
let timeInterval = lastLocation.timestamp.timeIntervalSince(location!.timestamp)
if timeInterval > 5 {
stopLocationManager()
getWeather()
}
}
}
And this is how I end updateLocation:
func stopLocationManager() {
locationManager.stopUpdatingLocation()
locationManager.delegate = nil
}
Finally, I got the location data I wanted perfectly.
But when I want to re-acquire the new location in other ways, that is, it has executed locationManager.startUpdatingLocation(), and still cannot execute func locationManager(_:, didUpdateLocations:).
I want to know how to fix this.

Answer 1

Don't set locationManager.delegate = nil when you stop updating your location. Or if you do that, set it back to self when you want to start getting location updates again.

Answer 2

Remove this
locationManager.delegate = nil