Firebase push notifications not working with iOS - ios

Question

I want to implement push notification using Firebase Cloud Messaging
I have setup my project and uploaded APN certificate as explained
and I am sending Test messages using fcmtoken to my real device
my configuration is as follows in AppDelegate
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
FirebaseApp.configure()
registerForPushNotifications(app: application)
return true
}
func registerForPushNotifications(app: UIApplication) {
UNUserNotificationCenter.current().delegate = self
Messaging.messaging().delegate = self
let authOptions: UNAuthorizationOptions = [.alert, .badge, .sound]
UNUserNotificationCenter.current().requestAuthorization(options: authOptions) { (authorized, error) in
if let error = error {
print(error.localizedDescription)
return
}
if authorized {
print("authorized")
DispatchQueue.main.async {
UIApplication.shared.registerForRemoteNotifications()
}
} else {
print("denied")
}
}
app.registerForRemoteNotifications()
}
func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String) {
print("Firebase registration token: \(fcmToken)")
let dataDict:[String: String] = ["token": fcmToken]
NotificationCenter.default.post(name: Notification.Name("FCMToken"), object: nil, userInfo: dataDict)
// TODO: If necessary send token to application server.
// Note: This callback is fired at each app startup and whenever a new token is generated.
}
func application(_ application: UIApplication,
didReceiveRemoteNotification notification: [AnyHashable : Any],
fetchCompletionHandler completionHandler: #escaping (UIBackgroundFetchResult) -> Void) {
print("notofication arrivied")
if Auth.auth().canHandleNotification(notification) {
completionHandler(.noData)
return
}
// This notification is not auth related, developer should handle it.
}
it is supposed to see notofication arrivied but it didn't Also set a beak point It seems this part is never being excused thus message is not coming

Answer 1

I don’t see this in your AppDelegate unless you have Swizzling enabled
func application(application: UIApplication,
didRegisterForRemoteNotificationsWithDeviceToken deviceToken: NSData) {
Messaging.messaging().apnsToken = deviceToken
}
This code maps your APNs device token to FCM token, which is necessary because APNs token is the only way you can send a push notification.

Answer 2

func sendPushNotification(to token: String, title: String, body: String, userInfo: [String: Any]) {
let payload: [String: Any] = ["title": title, "body": body, "sound": "sound.caf"]
let paramString: [String: Any] = ["to": token, "notification": payload, "data": userInfo]
let urlString = "https://fcm.googleapis.com/fcm/send"
let url = NSURL(string: urlString)!
let request = NSMutableURLRequest(url: url as URL)
request.httpMethod = "POST"
request.httpBody = try? JSONSerialization.data(withJSONObject:paramString, options: [.prettyPrinted])
request.setValue("application/json", forHTTPHeaderField: "Content-Type")
request.setValue("key=\(Keys.gmsServerKey)", forHTTPHeaderField: "Authorization")
let task = URLSession.shared.dataTask(with: request as URLRequest) { (data, response, error) in
do {
if let data = data {
if let object = try JSONSerialization.jsonObject(with: data, options: JSONSerialization.ReadingOptions.allowFragments) as? [String: Any] {
NSLog("Received data: \(object))")
}
}
} catch let err as NSError {
print(err.debugDescription)
}
}
task.resume()
}