Current Location Google maps swift , cannot access defaultLocation.coordinate - ios

Question

I have been looking at the google documentation to get the current location, but i am struggling to specify the location in the ViewDidLoad, as you can see i have set the Location fixed to Syndey Australia. In the google doc documentation when specifying the current location, they are using the "default location.coordinate" , i cannot access defaultLocation.coordinate in my code .
here is a link to the documenation : https://developers.google.com/maps/documentation/ios-sdk/current-place-tutorial
this is the code inside the viewDidLoad
GMSServices.provideAPIKey("AIzaSyARsPfNs54hrUAC4yKtHeu2jXfGjeA0b-E")
GMSPlacesClient.provideAPIKey("AIzaSyARsPfNs54hrUAC4yKtHeu2jXfGjeA0b-E ")
let camera = GMSCameraPosition.camera(withLatitude: -33.86, longitude: 151.20, zoom: 6.0)
mapView = GMSMapView.map(withFrame: CGRect.zero, camera: camera)
view = mapView
// creating the marker //
let marker = GMSMarker()
marker.position = CLLocationCoordinate2D(latitude: -33.86, longitude: 151.20)
marker.title = "Sydney"
marker.snippet = "Australia"
marker.map = mapView
This is my extenstion code
extension MapsViewController: CLLocationManagerDelegate {
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
let location : CLLocation = locations.last!
print("Location:\(location)")
let camera = GMSCameraPosition.camera(withLatitude: location.coordinate.latitude, longitude: location.coordinate.longitude, zoom: zoomLevel)
if mapView.isHidden {
mapView.isHidden = false
mapView.camera = camera
}
else {
mapView.animate(to: camera)
}
}
func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {
switch status {
case .restricted:
// display the map the default location
mapView.isHidden = false
case .denied :
print("User denied access to location")
mapView.isHidden = false
case .notDetermined :
print("Location status not deteremined")
case .authorizedAlways : fallthrough
case . authorizedWhenInUse :
print("Location status is OK")
}
}

Answer 1

I think you missed to add key NSLocationWhenInUseUsageDescription in your Info.plist file.
Add this key to the usage description.
It should then show an iOS system pop-up to allow location access.

Answer 2

I have read your question and checked you given link for Map Tutorial. I found some code missing in your viewDidLoad method:
locationManager = CLLocationManager()
locationManager.desiredAccuracy = kCLLocationAccuracyBest
locationManager.requestAlwaysAuthorization()
locationManager.distanceFilter = 50
locationManager.startUpdatingLocation()
locationManager.delegate = self
placesClient = GMSPlacesClient.shared()
Without assign delegate to the object of CLLocationManager like locationManager.delegate = self
I don't think even your extension would be called (CLLocationManagerDelegate).
Also
As per #Let's_Create answer info.plist shold have following keys to explain the user how the app uses this.
dataNSLocationAlwaysAndWhenInUseUsageDescription and NSLocationWhenInUseUsageDescription