Wrong initial user location in MapView gps - swift

Question

I want to get the user location, that's what I did:
I set locationManager in my ViewController:
var locationManager = CLLocationManager()
func setUpLocationManager() {
locationManager.delegate = self
locationManager.distanceFilter = 5
locationManager.desiredAccuracy = kCLLocationAccuracyBestForNavigation
mapView?.showsUserLocation = true
locationManager.startUpdatingLocation()
}
Here is the function that is called once the location is updated:
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
if !locations.isEmpty {
print("\(locations[0])")
}
}
}
It prints the initial location of the user position (see image), but I consider it wrong, because it an approximation.
I also tried with:
func mapView(_ mapView: MKMapView, didUpdate userLocation: MKUserLocation) {
let accuracy = userLocation.location?.horizontalAccuracy
if accuracy == locationManager.desiredAccuracy {
print("\(locations[0])")
}
}
But it never prints the location because locationManager.desiredAccuracy is equal to -2 and accuracy is always > 0.
This what I see on the mapView:
Initially the user pin shows a position near to the real position (but it is not right), subsequently the user pin moves to the real user position.
I want the function didUpdateLocations to be called when the user pin is on the right position.
My question is similar to this, but it was in objective-c.
Any hints? Thanks

Answer 1

ref. MKMapView's user location is wrong on startup or resume
Swift version:
func mapView(_ mapView: MKMapView, didUpdate userLocation: MKUserLocation) {
let accuracy = userLocation.location?.horizontalAccuracy
if accuracy ... {
}
}