LocationManagerDidChangeAuthorization.swift

    func locationManagerDidChangeAuthorization(_ manager: CLLocationManager) {
        switch manager.authorizationStatus {
        case .authorizedWhenInUse:  // Location services are available.
            // Insert code here of what should happen when Location services are authorized
            break
            
        case .restricted, .denied:  // Location services currently unavailable.
            // Insert code here of what should happen when Location services are NOT authorized
            break
            
        case .notDetermined:        // Authorization not determined yet.
            manager.requestWhenInUseAuthorization()
            break
            
        default:
            break
        }
    }