registerForRemoteNotifications() Callbacks not being called

Question

This question has been asked (e.g. here and here), but none of the solutions seems to apply to my setup.

I am developing an app in iOS 9 / Xcode7 (beta 5).

I have created an explicit App ID / bundle identifier. (The app ID is automatically generated by Xcode, but is listen in the Developer Portal as Xcode iOS App ID com mycompanyname mayappname).

I have configured my target's "Capabilities" in Xcode to add support for push notifications.

I have configured my App ID in the developer portal to support push notifications: I created and downloaded a development APNs certificate, and installed in my keychain (not sure this is needed? I thought this cert is intended for my server? But just to be safe in case it is needed at build time?)

I am running the app from Xcode on the device: iPhone 5s, iOS 9, 4G connectivity, Wi-Fi turned off (just in case).

My app is not listed in the device's Settings.app, "Notifications" section, so there's nothing I can enable there...

I initiate the registration process like this:

func application(application: UIApplication,
        didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?
        ) -> Bool
{
    application.registerForRemoteNotifications()
        
    return true
}

I have implemented both:

func application(application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: NSData)
{

}

...and:

func application(application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: NSError)
{
       
}

and setup breakpoints/logs on both, but neither gets called.

What can be happening?

EDIT: It is working now, but only if I call both registerForRemoteNotifications() and registerUserNotificationSettings() at launch.

I was working under the assumtion that I should first call registerForRemoteNotifications(), and on success (i.e., application(_:didRegisterForRemoteNotificationsWithDeviceToken)) I should in turn call registerUserNotificationSettings() to specify the types of notifications (and prompt the user). The docs do not make clear which of these two functions must be called first; in particular, the inline docs for registerForRemoteNotifications() say:

[...] Call this method to initiate the registration process[...]

, which seems to suggest that it alone triggers the whole thing. However, the programming guide has the following step-by-step instructions:

1. Register the notification types your app supports using registerUserNotificationSettings:.
2. Register to receive push notifications via APNs by calling your app’s registerForRemoteNotifications method.
3. Store the device token returned to the app delegate by the server for a successful registration, or handle registration failure gracefully.
4. Forward the device token to the app’s push provider.

---

Update (Jan 2015):

I moved on to another project so I didn't follow up the issue or find a definitive response. Still listening to any helpful info...

Answer 1

Since this was originally answered,

registerUserNotificationSettings:

...has been deprecated, and,

requestAuthorizationWithOptions:completionHandler: // Objective C

...should now be used, or the Swift equivalent,

requestAuthorization(options:completionHandler:) // Swift

Here's an example of the Swift API in use,

let notificationCenter = UNUserNotificationCenter.current()
notificationCenter.requestAuthorization(options: [.alert, .sound, .badge]) { granted, error in
    
    if let error = error {
        // Handle the error here.
        print(error.localizedDescription)
    }

    // Enable or disable features based on the authorization.
}

Answer 2

You were close.

You need first to call registerForRemoteNotificationTypes: or registerUserNotificationSettings: (iOS >=8)

And then call

registerForRemoteNotifications:

You have that example code:

   // Register the supported interaction types.

    UIUserNotificationType types = UIUserNotificationTypeBadge |

                 UIUserNotificationTypeSound | UIUserNotificationTypeAlert;

    UIUserNotificationSettings *mySettings =

                [UIUserNotificationSettings settingsForTypes:types categories:nil];

    [[UIApplication sharedApplication] registerUserNotificationSettings:mySettings];



   // Register for remote notifications.

    [[UIApplication sharedApplication] registerForRemoteNotifications];

Via: https://developer.apple.com/library/ios/documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/Chapters/IPhoneOSClientImp.html