Problem:
How to get Firebase FCM device token from iOS device in an Ionic 4.beta and Capacitor 1.0.0-beta.8 project.
Solution:
Capacitor push notifications on an Android device returns an FCM device token. However, iOS devices return an APNS device token. Firebase is unable to send a message with an APNS token. However, the APNS token could be used to send a message via Apple's Push Notification Service.
To get an FCM on an iOS device, follow the instructions here for setting up a Firebase Cloud Message Client App on iOS: https://firebase.google.com/docs/cloud-messaging/ios/client
Proof of Concept (in short):
a. Add Firebase pods to /ios/App/Podfile
target 'App' do
# Add your Pods here
pod 'Firebase/Core'
pod 'Firebase/Messaging'
b. Run in the console in /ios/App: pod install
c. In /ios/App/App/AppDelegate.swift insert the following:
// part 1 of 3
import UserNotifications
import Firebase
// part 2 of 3
// Override point for customization after application launch.
// Use Firebase library to configure APIs
FirebaseApp.configure()
Messaging.messaging().delegate = self
if #available(iOS 10.0, *) {
// For iOS 10 display notification (sent via APNS)
UNUserNotificationCenter.current().delegate = self
let authOptions: UNAuthorizationOptions = [.alert, .badge, .sound]
UNUserNotificationCenter.current().requestAuthorization(
options: authOptions,
completionHandler: {_, _ in })
} else {
let settings: UIUserNotificationSettings =
UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil)
application.registerUserNotificationSettings(settings)
}
application.registerForRemoteNotifications()
// part 3 of 3
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.
}
