UNUserNotificationCenter did receive response with completion handler is never called iOS10, swift 2.3

Question

I am scheduling new notifications in iOS10, like this:

func scheduleNotification (event : Meeting, todaysBadgeCounter: Int) {

    if #available(iOS 10.0, *) {

        let minutesBefore = 10
        //interval in seconds from current point in time to notification
        let interval : NSTimeInterval = NSTimeInterval(secondsFromNowTo(event.startTime.dateByAddingTimeInterval(-minutesBefore * 60)))

        //only schedule in the future
        if(interval > 0){


            let category = NotificationsController.notificationCategory

            let center = NotificationsController.notificationCenter
            center.setNotificationCategories([category])
            let content = UNMutableNotificationContent()

            content.title = NSString.localizedUserNotificationStringForKey(event.title, arguments: nil)
            if(minutesBefore <= 1){
                content.body = NSString.localizedUserNotificationStringForKey("IOS10: Your \(event.title) is about to start", arguments: nil)
            }else{
                content.body = NSString.localizedUserNotificationStringForKey("IOS10: You have \(event.title) in \(Int(minutesBefore)) minutes", arguments: nil)

            }
            content.sound = UNNotificationSound.defaultSound()

            let trigger = UNTimeIntervalNotificationTrigger.init(timeInterval: interval, repeats: false)
            let identifier = NSString.localizedUserNotificationStringForKey("sampleRequest\(event.UUID)", arguments: nil)
            let request = UNNotificationRequest.init(identifier: identifier, content: content, trigger: trigger)

            //setting the delegate
            center.delegate = self

            center.addNotificationRequest(request, withCompletionHandler: { (error) in
                // handle the error if needed
                log.error(error?.localizedDescription)
                print("SCHEDULING >=iOS10:", event.title, ", interval:", interval)
            })
        }


//return category
@available(iOS 10.0, *)
class var notificationCategory : UNNotificationCategory {
    struct Static {
        static let callNow = UNNotificationAction(identifier: NotificationActions.callNow.rawValue, title: "Call now", options: [])
        static let clear = UNNotificationAction(identifier: NotificationActions.clear.rawValue, title: "Clear", options: [])
        static let category : UNNotificationCategory = UNNotificationCategory.init(identifier: "CALLINNOTIFICATION", actions: [callNow, clear], intentIdentifiers: [], options: [])

    }
    return Static.category
}

I am able to schedule notifications, and receive local notifications at the right time. BUT: my delegate methods that I used according to the tutorial are never executed, however the didReceiveLocalNotification is executed each time I tap on the notification:

extension NotificationsController: UNUserNotificationCenterDelegate {

@available(iOS 10.0, *)
func userNotificationCenter(center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: () -> Void) {

    print("IOS10 delivered")

    // Response has actionIdentifier, userText, Notification (which has Request, which has Trigger and Content)
    switch response.actionIdentifier {
    case NotificationActions.NotifyBefore.rawValue:
        print("notify")
        break

    case NotificationActions.callNow.rawValue:
        print("callNow")
        break
    case NotificationActions.clear.rawValue:
        print("clear")
    default: break
    }
}

@available(iOS 10.0, *)
func userNotificationCenter(center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: (UNNotificationPresentationOptions) -> Void) {

        // Delivers a notification to an app running in the foreground.
        print("IOS10 delivered 2222")

    }
}

Wasn't didReceiveLocalNotification deprecated? How to make these methods to be called?

UPDATE:

I updated my code with some suggestions from here, namely:

1. I added assigning of the UNUserNotificationCenter.delegate to the applicationDidFinishLaunchingWithOptions.
2. I also tried moving these methods (delegate methods) out of the extension to the NotificationsController.swift class, and setting this class as UNUserNotificationCenterDelegate. Did not work for me either.

Answer 1

Request identifier is not the notification category.

Just add this line:

content.categoryIdentifier = identifier

Update: Just made a simple app. Everything seems to working fine:

class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate {

var window: UIWindow?

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

    UNUserNotificationCenter.current().delegate = self

    UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .badge, .sound]) { (granted, error) in
        if granted {
            self.registerCategory()
            self.scheduleNotification(event: "test", interval: 3)
            self.scheduleNotification(event: "test2", interval: 5)
        }
    }

    return true
}

func registerCategory() -> Void{

    let callNow = UNNotificationAction(identifier: "call", title: "Call now", options: [])
    let clear = UNNotificationAction(identifier: "clear", title: "Clear", options: [])
    let category : UNNotificationCategory = UNNotificationCategory.init(identifier: "CALLINNOTIFICATION", actions: [callNow, clear], intentIdentifiers: [], options: [])

    let center = UNUserNotificationCenter.current()
    center.setNotificationCategories([category])

}

func scheduleNotification (event : String, interval: TimeInterval) {
    let content = UNMutableNotificationContent()

    content.title = event
    content.body = "body"
    content.categoryIdentifier = "CALLINNOTIFICATION"
    let trigger = UNTimeIntervalNotificationTrigger.init(timeInterval: interval, repeats: false)
    let identifier = "id_"+event
    let request = UNNotificationRequest.init(identifier: identifier, content: content, trigger: trigger)

    let center = UNUserNotificationCenter.current()
        center.add(request, withCompletionHandler: { (error) in
    })

}

func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
    print("didReceive")
    completionHandler()
}

func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
    print("willPresent")
    completionHandler([.badge, .alert, .sound])
}

}

Update 2: Rewritten in Swift 2.3

class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate {

var window: UIWindow?

func applicationDidFinishLaunching(application: UIApplication) {
    UNUserNotificationCenter.currentNotificationCenter().delegate = self
    UNUserNotificationCenter.currentNotificationCenter().requestAuthorizationWithOptions([.Badge, .Sound, .Alert]) { (granted, error) in
        if granted {
            self.registerCategory()
            self.scheduleNotification("test", interval: 3)
            self.scheduleNotification("test2", interval: 5)
        }
    }
}


func registerCategory() -> Void{

    let callNow = UNNotificationAction(identifier: "call", title: "Call now", options: [])
    let clear = UNNotificationAction(identifier: "clear", title: "Clear", options: [])
    let category : UNNotificationCategory = UNNotificationCategory.init(identifier: "CALLINNOTIFICATION", actions: [callNow, clear], intentIdentifiers: [], options: [])

    let center = UNUserNotificationCenter.currentNotificationCenter()
    center.setNotificationCategories([category])

}

func scheduleNotification(event : String, interval: NSTimeInterval) {
    let content = UNMutableNotificationContent()

    content.title = event
    content.body = "body"
    content.categoryIdentifier = "CALLINNOTIFICATION"
    let trigger = UNTimeIntervalNotificationTrigger.init(timeInterval: interval, repeats: false)
    let identifier = "id_"+event
    let request = UNNotificationRequest.init(identifier: identifier, content: content, trigger: trigger)

    let center = UNUserNotificationCenter.currentNotificationCenter()
    center.addNotificationRequest(request) { (error) in

    }
}

func userNotificationCenter(center: UNUserNotificationCenter, willPresentNotification notification: UNNotification, withCompletionHandler completionHandler: (UNNotificationPresentationOptions) -> Void) {

    print("willPresent")
    completionHandler([.Badge, .Alert, .Sound])
}

func userNotificationCenter(center: UNUserNotificationCenter, didReceiveNotificationResponse response: UNNotificationResponse, withCompletionHandler completionHandler: () -> Void) {

    print("didReceive")
    completionHandler()
}

}

Answer 2

Use belwo delegate method for Swift 2.3:

func userNotificationCenter(center: UNUserNotificationCenter, didReceiveNotificationResponse response: UNNotificationResponse, withCompletionHandler completionHandler: () -> Void)

Answer 3

Make sure your AppDelegate implementing UNUserNotificationCenterDelegate protocol.

For Swift

let center = UNUserNotificationCenter.current()
center.delegate = self

For Objective-c

//set delegate to self
[[UNUserNotificationCenter currentNotificationCenter] setDelegate:self];

Assigning delegate to self will trigger following methods.

// App in foreground
    private func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: (UNNotificationPresentationOptions) -> Void) {
      print("willPresent")
      }
//On Action click
     private func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: () -> Void) {
      print("didReceive")
      }