Please implement -messaging:didReceiveRegistrationToken: to be provided with an FCM token - ios

Question

I am trying to put iOS push notifications onto my app. But keep getting the error
The object <FancyDeliveryManager.ViewController: 0x101910170> does not respond to -messaging:didReceiveRegistrationToken:. Please implement -messaging:didReceiveRegistrationToken: to be provided with an FCM token.
My app delegate looks like:
class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate, MessagingDelegate {
var window : UIWindow?
//private let pushNotificationHandler: PushNotificationHandler = PushNotificationHandler()
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
FirebaseApp.configure()
//notification delegates
Messaging.messaging().delegate = self //enables recievieving of tokens
UNUserNotificationCenter.current().delegate = self
///
//set up nav controller
let root: UIViewController = ViewController()
let navigationController = UINavigationController(rootViewController: root)
window = UIWindow(frame: UIScreen.main.bounds)
window?.rootViewController = navigationController
window?.makeKeyAndVisible()
return true
}
//MARK: Push Handling
func registerForPushNotifications() {
UNUserNotificationCenter.current()
.requestAuthorization(options: [.alert, .sound, .badge]) {
[weak self] granted, error in
guard granted else { return }
self?.getNotificationSettings()
}
}
//check the notification settings
func getNotificationSettings() {
UNUserNotificationCenter.current().getNotificationSettings { settings in
guard settings.authorizationStatus == .authorized else { return }
DispatchQueue.main.async {
UIApplication.shared.registerForRemoteNotifications()
}
}
}
// This method will be called when app received push notifications in foreground
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: #escaping (UNNotificationPresentationOptions) -> Void)
{
completionHandler([.alert, .badge, .sound])
}
//called when user interacts with push notification
func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: #escaping () -> Void) {
print("Launched from push notification")
completionHandler()
}
// This callback is fired at each app startup and whenever a new token is created.
func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String) {
print("Firebase registration token: \(fcmToken)")
saveFcmToken(token: fcmToken)
}
//save token in database
func saveFcmToken(token: String){
var ref: DatabaseReference!
ref = Database.database().reference()
guard let userID = Auth.currentUser else { return }
ref.child("WarehouseManagers/\(userID)/fcmToken").setValue(token)
}
func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any]) {
//default to delegate method below
}
func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any],
fetchCompletionHandler completionHandler: #escaping (UIBackgroundFetchResult) -> Void) {
completionHandler(UIBackgroundFetchResult.newData)
}
// [END receive_message]
func application(_ application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: Error) {
print("Unable to register for remote notifications: \(error.localizedDescription)")
}
func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
print("APNs token retrieved: \(deviceToken)")
// With swizzling disabled you must set the APNs token here.
// Messaging.messaging().apnsToken = deviceToken
}
func applicationDidBecomeActive(_ application: UIApplication) {
UIApplication.shared.applicationIconBadgeNumber = 0
}
Is there something in the main ViewController that needs to be added here?
Any help would be greatly appreciated.