iOS 11.2.5-didRegisterForRemoteNotificationWithDeviceToken-无响应

Question

Starting with the OS 11.2.5 my devices weren't able to register a remote notification (eg for silent push purposes. I implemented the registration process within these code lines:

// Ask for notification permission
UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge]) {(accepted, error) in
    if !accepted {
        print("Notification access denied.")
    }
}
application.registerForRemoteNotifications()

Additionally, as you already know, you need to implement the following two methods, in order to register a remote notification at Apple:

func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {

    let tokenParts = deviceToken.map { data -> String in
        return String(format: "%02.2hhx", data)
    }
    let token = tokenParts.joined()
    // Get my token here and do additionally stuff
}

func application(_ application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: Error) {
    // Handling error for registering here
}

So my question would be the following: This implementation has been working until Apple OS Update 11.2.4: The didRegisterForRemoteNotificationsWithDeviceToken was successfully called after registering a device and in case of an error the other method didFailToRegisterForRemoteNotificationsWithError was called -> everything perfect!

But starting with OS 11.2.5 I got no response from Apple anymore. I spent a lot of time investigating this issue. After Apple released OS 11.2.6 it worked like charm again -> I'm totally confused.

Does anybody know, if this is a known issue in OS 11.2.5? - Thanks Alex

Answer 1

I guess the problem caused at registering for remote notification, try below code please:

// Ask for notification permission
UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge]) {(accepted, error) in
    if accepted {
        DispatchQueue.main.async {
             UIApplication.shared.registerForRemoteNotifications()
        }
    }else{
        print("Notification access denied.")
    }
}

Answer 2

use updated methods.


// Push Notifications
    func registerForPushnotifications(application: UIApplication)
    {
        if #available(iOS 10.0, *) {
            UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge]) { (granted, error) in
                guard granted else{ return }
                self.getNotificationSetting()
            }
        }
        else
        {
            // Fallback on earlier versions
            let notificationSettings = UIUserNotificationSettings(
                types: [.badge, .sound, .alert], categories: nil)
            application.registerUserNotificationSettings(notificationSettings)
        }
    }
    // Push Notification settings
    func getNotificationSetting()
    {
        if #available(iOS 10.0, *)
        {
            UNUserNotificationCenter.current().getNotificationSettings { (settings) in
                guard settings.authorizationStatus == .authorized else {return}
                DispatchQueue.main.async {
                    UIApplication.shared.registerForRemoteNotifications()
                }
            }
        }
    }
    // Push Notifications Delegates

    func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data)
    {
        let tokenParts = deviceToken.map { data -> String in
            return String(format: "%02.2hhx", data)
        }
    }

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