Message sent to other class via Delegation when the locationManagerDidChangeAuthorization method is called not received - swift

Question

In the following code, I'm trying to call a method located inside the LocationManagerViewModel class when the locationManagerDidChangeAuthorization is called from inside the LocationManager class via delegation, but nothing happens when it gets called, I only see the debug message Calling method locationManagerDidChangeAuthorization but the method locationManagerDelegateComunicationMethod inside the LocationManagerViewModel never gets called.
Any idea what could be wrong?
Location Manger Class; Sender
protocol LocationManagerDelegate {
func locationManagerDelegateComunicationMethod()
}
final class LocationManager: NSObject, CLLocationManagerDelegate {
private let locationManager = CLLocationManager()
var delegate: LocationManagerDelegate?
var hasFoundOnePlacemark:Bool = false
func checkIfLocationServicesIsEnabled(){
DispatchQueue.global().async {
if CLLocationManager.locationServicesEnabled(){
self.locationManager.delegate = self
self.checkLocationAuthorization()
}else{
print("You have Location Services DESABLED!")
}
}
}
private func checkLocationAuthorization(){
switch locationManager.authorizationStatus{
case .notDetermined:
print("notDetermined")
case .restricted:
print("restricted")
case .denied:
print("denied")
case .authorizedWhenInUse, .authorizedAlways:
print("authorizedWhenInUse")
default:
break
}
}
func locationManagerDidChangeAuthorization(_ manager: CLLocationManager) {
print("Calling method locationManagerDidChangeAuthorization")
var delegate: LocationManagerDelegate? = LocationManagerViewModel()// I tried with and without this line
delegate?.locationManagerDelegateComunicationMethod()
}
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
hasFoundOnePlacemark = false
CLGeocoder().reverseGeocodeLocation(manager.location!, completionHandler: {(placemarks, error)-> Void in
if error != nil {
self.locationManager.stopUpdatingLocation()
}
if placemarks!.count > 0 {
if !self.hasFoundOnePlacemark{
self.hasFoundOnePlacemark = true
self.locationManager.stopUpdatingLocation()
}else{
self.noPlacesFoundAlertView()
}
})
}
}
LocationManagerViewModel Class; Receiver
class LocationManagerViewModel: ObservableObject, LocationManagerDelegate{
// some #Published properties here
private var locationManager = LocationManager()
func locationManagerDelegateComunicationMethod() {
print("Received message from the LocationManager class!")
// do something...
}
}
Thanks

Answer 1

The delegate is never assigned in LocationManagerViewModel. You probably need to assign it in an init:
class LocationManagerViewModel: ObservableObject, LocationManagerDelegate{
// some #Published properties here
private var locationManager = LocationManager()
init(){
locationManager.delegate = self
}
func locationManagerDelegateComunicationMethod() {
print("Received message from the LocationManager class!")
// do something...
}
}