iOS Firebase push notification not working but working on pusher - swift

Question

Problem:
Cannot receive push notification for my from firebase given the fact that I was able to receive the device token and firebase token.
Here are my main calls in my AppDelegate.swift
UIApplication.shared.registerForRemoteNotifications()
This call is successful and I am able to establish connection to APNS because I was able to get my token with this call:
func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data)
Also, I know I am connecting to firebase because I am able to get my firebase token with this call:
func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String)
So I am pretty confident that my code in AppDelegate.swift is fine.
Here are my steps to configure firebase push notification:
Downloaded my google-service.plist file and dragged it into my project
Logged into my apple developers account (paid) and created my Key with push notification (copied down the KeyID and along with my teamID or App prefix).
Went into my firebase account and uploaded my Key along with my KeyID and TeamID
I made sure my app capabilities got the push notification switch to ON
Tried sending a test message and app never receives one
My AppDelegate.swift:
class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate, MessagingDelegate {
var window: UIWindow?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
FirebaseApp.configure()
UIApplication.shared.applicationIconBadgeNumber = 0
// Override point for customization after application launch.
loggingWithSwitftyBeaverConfiguration()
UNUserNotificationCenter.current().delegate = self
// requesting user's permission to accpet push notification
UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .badge, .sound]) { (granted, error) in
if granted == true {
log.debug("User granted push notification")
UNUserNotificationCenter.current().delegate = self
Messaging.messaging().delegate = self
DispatchQueue.main.async {
UIApplication.shared.registerForRemoteNotifications()
}
} else {
log.debug("User did not grant pn")
}
}
return true
}
func application(_ application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: Error) {
log.debug("Device token receiving failed because: \(error.localizedDescription)")
}
func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
let token = deviceToken.map {String(format: "%02.2hhx", $0)}.joined()
log.debug("Token: \(token)")
}
func messaging(_ messaging: Messaging, didReceive remoteMessage: MessagingRemoteMessage) {
log.debug("\(remoteMessage.description)")
}
func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String) {
log.debug("Firebase cloud messaging token: \(fcmToken)")
}
func applicationDidBecomeActive(_ application: UIApplication) {
Messaging.messaging().shouldEstablishDirectChannel = true
}
func applicationDidEnterBackground(_ application: UIApplication) {
Messaging.messaging().shouldEstablishDirectChannel = false
}
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: #escaping (UNNotificationPresentationOptions) -> Void) {
UIApplication.shared.applicationIconBadgeNumber += 1
print("push notification received")
}
}
Extra information: I was able to receive test notifications by using pusher, just wanted to throw it out there,
Thank you
UPDATE: - working code:
#UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
var compositionRoot: CompositionRoot?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
window = UIWindow()
configureCompositionRoot()
configureFirebase()
configurePushNotification()
configureApplicationEntryPoint()
configureLogging()
return true
}
func configureCompositionRoot() {
guard let window = window else { return }
compositionRoot = CompositionRoot(window: window)
}
func configureApplicationEntryPoint() {
guard let compositionRoot = compositionRoot else { return }
compositionRoot.getCoordinator().onStart()
}
func configureLogging() {
let console = ConsoleDestination()
log.addDestination(console)
}
func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
let token = deviceToken.map {String(format: "%02.2hhx", $0)}.joined()
print("Token: \(token)")
Messaging.messaging().apnsToken = deviceToken
//Messaging.messaging().setAPNSToken(deviceToken, type: MessagingAPNSTokenType.prod)
}
}
extension AppDelegate: UNUserNotificationCenterDelegate {
func configureFirebase() {
FirebaseApp.configure()
}
func configurePushNotification() {
UNUserNotificationCenter.current().delegate = self
let authOptions: UNAuthorizationOptions = [.alert, .badge, .sound]
UNUserNotificationCenter.current().requestAuthorization(options: authOptions) { (granted, error) in
if granted == true {
print("User granted push notification")
UNUserNotificationCenter.current().delegate = self
Messaging.messaging().delegate = self
DispatchQueue.main.async {
UIApplication.shared.registerForRemoteNotifications()
}
} else {
print("User did not grant pn")
}
}
}
}
extension AppDelegate: MessagingDelegate {
func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String) {
}
}

Answer 1

Please check your payload. It might be the reason that you are not receiving notifications.
Your payload should like:
{
"to": "APA91bHun4MxP5egoKMwt2KZFBaFUH-1RYqx...",
"notification": {
"body": "great match!",
"title": "Portugal vs. Denmark",
"icon": "myicon"
},
"data": {
"Nick": "Mario",
"Room": "PortugalVSDenmark"
}
}
Having all data under data does not trigger any notification in iOS even though Firebase returns a successful request because the forwarded APNS payload is not correct. Besides the proper way should be to follow the GCM or FCM payload recommendations, which is to use both notification for the notification message and data for custom key/value pairs.
When FCM Send data to APNS it convert it into APNs payload. It set values of notification in aps tag i.e.
{
"aps" : {
"alert" : {
"title" : "Portugal vs. Denmark",
"body" : "Portugal vs. Denmark",
}
},
"Nick" : "Mario",
"Room" : "PortugalVSDenmark"
}

Answer 2

[Follow the step by step process define here..]
https://firebase.google.com/docs/cloud-messaging/ios/client

Answer 3

Another possible lead is to disable Firebase Swizzling as explained here :
https://firebase.google.com/docs/cloud-messaging/ios/client