Not able to show annotation pin on MKMapview Swift - ios

Question

I am trying to show annotation pin for current location. For that I have written following code
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
mapView.layer.cornerRadius = 8.0
imageView.layer.cornerRadius = 8.0
//mapview settings
mapView.mapType = MKMapType.standard
mapView.isZoomEnabled = true
mapView.isZoomEnabled = true
// Or, if needed, we can position map in the center of the view
mapView.center = view.center
mapView.delegate = self
}
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
determineCurrentLocation()
}
func determineCurrentLocation()
{
locationManager = CLLocationManager()
locationManager.delegate = self
locationManager.desiredAccuracy = kCLLocationAccuracyBest
locationManager.requestAlwaysAuthorization()
if CLLocationManager.locationServicesEnabled() {
//locationManager.startUpdatingHeading()
locationManager.startUpdatingLocation()
}
}
//Mapview Delegate methods
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
let userLocation:CLLocation = locations[0] as CLLocation
// Call stopUpdatingLocation() to stop listening for location updates,
// other wise this function will be called every time when user location changes.
//manager.stopUpdatingLocation()
let center = CLLocationCoordinate2D(latitude: userLocation.coordinate.latitude, longitude: userLocation.coordinate.longitude)
let region = MKCoordinateRegion(center: center, span: MKCoordinateSpan(latitudeDelta: 0.01, longitudeDelta: 0.01))
mapView.setRegion(region, animated: true)
// Drop a pin at user's Current Location
let myAnnotation: MKPointAnnotation = MKPointAnnotation()
myAnnotation.coordinate = CLLocationCoordinate2DMake(userLocation.coordinate.latitude, userLocation.coordinate.longitude);
myAnnotation.title = "Current location"
mapView.addAnnotation(myAnnotation)
}
func locationManager(manager: CLLocationManager, didFailWithError error: Error)
{
print("Error \(error)")
}
But, its nothing showing in mapview. Any suggestions?

Answer 1

You need to add NSLocationAlwaysUsageDescription key in Info.plist with a message to be displayed in the prompt.