Push Notifications not being received on iOS 10, but working on iOS 9 and before

Question

I have several apps that were written in Swift 2.2, compiled with Xcode 7.3 and is live on the App Store. The apps utilize Push Notifications and is working fine in iOS 9.3

Answer 1

I have fixed this issue using below step:

Step 1:Go to Project -> Target -> Capabilities -> Push Notifications -> Switch it ON

Step 2: Fix issue related to proper certificate,provisioning profile

Step 3: Quit Xcode, Clean and Run

Answer 2

In various SO responses to questions about iOS 9 vs iOS 10 push notifications, I've tried the following tests:

1) update the notification calls to specifically use the UNUserNotificationCenter for iOS 10 devices

2) update the Push capability so that the entitlements file is updated

I can confirm that doing #2 and keeping all your existing iOS 9 push code the same will allow basic push notifications to come through on the iOS 10 devices

Answer 3

Ok I have figured it out. I now have my original Push Notifications that was working on iOS 9 working on iOS 10 with Xcode 8 and Swift 2.3.

I implemented this by making the following changes to my AppDelegate:

1) On my project settings, under the Capabilities Tab, I scroll down to "Push Notifications" and turn it to "ON". This automatically generates an entitlements file that contains the key "APS Environment" and with value "development".

2) In AppDelegate.swift I make several code changes. I start by importing the UserNotifications framework:

import UserNotifications

Then I have AppDelegate implement the UNUserNotificationCenterDelegate protocol:

class AppDelegate: /*Some other protocols I am extending...*/, UNUserNotificationCenterDelegate {

Then I add the following method:

func registerForPushNotifications(application: UIApplication) {

    if #available(iOS 10.0, *){
        UNUserNotificationCenter.currentNotificationCenter().delegate = self
        UNUserNotificationCenter.currentNotificationCenter().requestAuthorizationWithOptions([.Badge, .Sound, .Alert], completionHandler: {(granted, error) in
            if (granted)
            {
                UIApplication.sharedApplication().registerForRemoteNotifications()
            }
            else{
                //Do stuff if unsuccessful...
            }
        })
    }

    else{ //If user is not on iOS 10 use the old methods we've been using
        let notificationSettings = UIUserNotificationSettings(
            forTypes: [.Badge, .Sound, .Alert], categories: nil)
        application.registerUserNotificationSettings(notificationSettings)

    }

}

Then I call this newly created function inside didFinishLaunchingWithOptions:

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

I leave my didRegisterForRemoteNotificationsWithDeviceToken method unchanged:

func application(application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: NSData) {
    //Implement this. Do something with the token I receive. Send it to my push notification server to register the device or something else I'd like to do with the token.
 }

Now I implement two new methods for iOS 10 to handle the receiving of Push Notifications:

@available(iOS 10.0, *)
func userNotificationCenter(center: UNUserNotificationCenter, willPresentNotification notification: UNNotification, withCompletionHandler completionHandler: (UNNotificationPresentationOptions) -> Void) {
    //Handle the notification
}

@available(iOS 10.0, *)
func userNotificationCenter(center: UNUserNotificationCenter, didReceiveNotificationResponse response: UNNotificationResponse, withCompletionHandler completionHandler: () -> Void) {
    //Handle the notification
}

I did not remove any of the methods I have previously implemented for Push Notifications in iOS 9.

Answer 4

IOS 10 has a different Notification kit.

import UserNotifications

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {



    if #available(iOS 10.0, *) {
        let center = UNUserNotificationCenter.current()
        center.requestAuthorization(options: [.badge, .alert , .sound]) { (granted, error) in
            if granted {
                UIApplication.shared.registerForRemoteNotifications()
            }
        }
    } else {
        let type: UIUserNotificationType = [UIUserNotificationType.badge, UIUserNotificationType.alert, UIUserNotificationType.sound]
        let setting = UIUserNotificationSettings(types: type, categories: nil)
        UIApplication.shared.registerUserNotificationSettings(setting)
        UIApplication.shared.registerForRemoteNotifications()
    }
}



func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data){
    let token = String(format: "%@", deviceToken as CVarArg)
}

Answer 5

When my app was moved from IOS 9 to IOS 10 the silent push notifications sent by my Parse server hosted on Heroku stopped being received by the app.

The only change I made to make notifications work again was to modify the Javascript on my server so that the argument to content-available was an integer 1 and not a string "1"

           Parse.Push.send({
                where: notifyDeletedRequestsQuery,
                data: {
                    'content-available': 1,
                    refresh: constants.requestsClassName
                    }
            }, { useMasterKey: true });

Also note that content-available cannot appear in the same push notification as badge, sound or alert.