I am not able to receive data notification iOS swift 3

Question

I am following sampler project provided by firebase. Firebase Cloud Messaging sammple

My app delegate is

import UIKit
import Firebase
import FirebaseMessaging
import UserNotifications
import FirebaseInstanceID

//add firebase code app delegate code

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

var window: UIWindow?
let gcmMessageIDKey = "gcm.message_id"


func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.


    // Register for remote notifications. This shows a permission dialog on first run, to
    // show the dialog at a more appropriate time move this registration accordingly.
    // [START register_for_notifications]
    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()

    // [END register_for_notifications]
    FirebaseApp.configure()

    // [START set_messaging_delegate]
    Messaging.messaging().delegate = self
    // [END set_messaging_delegate]

    return true

}

// [START receive_message]
func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any]) {
    // If you are receiving a notification message while your app is in the background,
    // this callback will not be fired till the user taps on the notification launching the application.
    // TODO: Handle data of notification
    // Print message ID.
    if let messageID = userInfo[gcmMessageIDKey] {
        print("Message ID: \(messageID)")
    }

    // Print full message.
    print(userInfo)
}

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any],
                 fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
    // If you are receiving a notification message while your app is in the background,
    // this callback will not be fired till the user taps on the notification launching the application.
    // TODO: Handle data of notification
    // Print message ID.
    if let messageID = userInfo[gcmMessageIDKey] {
        print("Message ID: \(messageID)")
    }

    // Print full message.
    print(userInfo)

    completionHandler(UIBackgroundFetchResult.newData)
}
// [END receive_message]


func application(_ application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: Error) {
    print("Unable to register for remote notifications: \(error.localizedDescription)")
}

// This function is added here only for debugging purposes, and can be removed if swizzling is enabled.
// If swizzling is disabled then this function must be implemented so that the APNs token can be paired to
// the InstanceID token.
func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
    print("APNs token retrieved: \(deviceToken)")

    // With swizzling disabled you must set the APNs token here.
    InstanceID.instanceID().setAPNSToken(deviceToken, type: InstanceIDAPNSTokenType.sandbox)

}


}


        // [START ios_10_message_handling]
        @available(iOS 10, *)
extension AppDelegate : UNUserNotificationCenterDelegate {

// Receive displayed notifications for iOS 10 devices.
func userNotificationCenter(_ center: UNUserNotificationCenter,
                            willPresent notification: UNNotification,
                            withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
    let userInfo = notification.request.content.userInfo
    // Print message ID.
    if let messageID = userInfo[gcmMessageIDKey] {
        print("Message ID: \(messageID)")
    }

    // Print full message.
    print(userInfo)

    // Change this to your preferred presentation option
    completionHandler([.alert,.badge,.sound])
}

func userNotificationCenter(_ center: UNUserNotificationCenter,
                            didReceive response: UNNotificationResponse,
                            withCompletionHandler completionHandler: @escaping () -> Void) {
    let userInfo = response.notification.request.content.userInfo
    // Print message ID.
    if let messageID = userInfo[gcmMessageIDKey] {
        print("Message ID: \(messageID)")
    }

    // Print full message.
    print(userInfo)

    completionHandler()
}
}
// [END ios_10_message_handling]

extension AppDelegate : MessagingDelegate {

// [START refresh_token]
func messaging(_ messaging: Messaging, didRefreshRegistrationToken fcmToken: String) {

    print("Firebase registration token: \(fcmToken)")

    print(fcmToken)

    resgisterNotificationToken(fcmToken: fcmToken)

}
// [END refresh_token]

func application(received remoteMessage: MessagingRemoteMessage) {

    //get called when sending notification from POSTMAN and when app is open

    print("%@", remoteMessage.appData)

    print("%@", remoteMessage)

}


func resgisterNotificationToken(fcmToken:String){

    //let deviceId = UIDevice.current.identifierForVendor!.uuidString

    //let parameters = ["OTY": AppConstants.init().OS_TYPE,"REGID": fcmToken] as Dictionary<String, String>



}

}

I can receive notification which was sent from firebase console. i have upgraded my firebase library to latest 3.0 something.

also i am getting following warning. 'InstanceIDAPNSTokenType' is deprecated: Use FIRMessaging's APNSToken property instead.

kindly provide solution with code and give me server request structure so that i can test it from postman.

Thanks in advance.

Answer 1

Can you try setting the apn token like this:

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

FIRInstanceID setAPNSToken

Set APNS token for the application. This APNS token will be used to register with Firebase Messaging using token or tokenWithAuthorizedEntity:scope:options:handler. If the token type is set to FIRInstanceIDAPNSTokenTypeUnknown InstanceID will read the provisioning profile to find out the token type.

Firebase API reference

It's working for me!

EDIT:

With Firebase version 4.0.0 the way to do it has changed:

Messaging.messaging()
    .setAPNSToken(deviceToken, type: MessagingAPNSTokenType.unknown)

FIRMessaging API reference

Answer 2

I've just updated the Github sample app to reflect the API changes. Sorry about that. I think some of the changes slipped through. The preferred way to set the APNs token (if you have disabled swizzling) is now:

Messaging.messaging().apnsToken = deviceToken

The old method, setAPNSToken:type: was causing more confusion because if the type was included and it did not match the type of build, the FCM token would not work. If you do need to use the old method, I'd recommend using the 'Unknown' enum, which will do an automatic check.

Your question title mentioned that you're not receiving data messages and the new sample change should show that. The way to receive data messages is:

1. Enable the direct channel by setting: Messaging.messaging().shouldEstablishDirectChannel = true

2. Implement the FIRMessagingDelegate and the messaging:didReceiveRemoteMessage method.

Another sample app you can look at is part of the open-source FCM repo here.