ios10, Swift 3 and Firebase Push Notifications (FCM)

Question

I am struggling to display my push notifications that I am sending to my device from the FCM notification console. I can see the device is receiving the notification becaus

Answer 1

You need to move

 application.registerForRemoteNotifications()

it should not be inside the else.

// [START register_for_notifications]
    if #available(iOS 10.0, *) {
        let authOptions : UNAuthorizationOptions = [.Alert, .Badge, .Sound]
        UNUserNotificationCenter.currentNotificationCenter().requestAuthorizationWithOptions(
            authOptions,
            completionHandler: {_,_ in })

        // For iOS 10 display notification (sent via APNS)
        UNUserNotificationCenter.currentNotificationCenter().delegate = self
        // For iOS 10 data message (sent via FCM)
        FIRMessaging.messaging().remoteMessageDelegate = self

    } else {
        let settings: UIUserNotificationSettings =
            UIUserNotificationSettings(forTypes: [.Alert, .Badge, .Sound], categories: nil)
        application.registerUserNotificationSettings(settings)            
    }

application.registerForRemoteNotifications()

See following commit in Firebase

Answer 2

Inside method didRegisterForRemoteNotificationsWithDeviceToken, add the following code:

func application(application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: NSData) {
    let tokenChars = UnsafePointer<CChar>(deviceToken.bytes)
    var tokenString = ""

    for i in 0..<deviceToken.length {
        tokenString += String(format: "%02.2hhx", arguments: [tokenChars[i]])
    }

    FIRInstanceID.instanceID().setAPNSToken(deviceToken, type: FIRInstanceIDAPNSTokenType.Unknown)

    print("tokenString: \(tokenString)")
}

And do not forget to enable Push Notifications inside Capabilities.

Answer 3

For me it was the missing entitlements file, so in the Capabilities of your project, you have to click fix issue. Xcode will setup the file for you.