How to handle UserNotifications Actions in iOS 10 - ios

Question

So I am able to schedule notifications like so;
//iOS 10 Notification
if #available(iOS 10.0, *) {
var displayDate: String {
let dateFormatter = DateFormatter()
dateFormatter.dateStyle = DateFormatter.Style.full
return dateFormatter.string(from: datePicker.date as Date)
}
let notif = UNMutableNotificationContent()
notif.title = "I am a Reminder"
notif.subtitle = "\(displayDate)"
notif.body = "Here's the body of the notification"
notif.sound = UNNotificationSound.default()
notif.categoryIdentifier = "reminderNotification"
let today = NSDate()
let interval = datePicker.date.timeIntervalSince(today as Date)
let notifTrigger = UNTimeIntervalNotificationTrigger(timeInterval: interval, repeats: false)
let request = UNNotificationRequest(identifier: "reminderNotif", content: notif, trigger: notifTrigger)
UNUserNotificationCenter.current().add(request, withCompletionHandler: { error in
if error != nil {
print(error)
// completion(Success: false)
} else {
//completion(Sucess: true)
}
})
}
I have asked for permissions in the appDelegate and the notifications appear fine with my custom view using the notification extension.
I have added notification actions in the appDelegate for the notification category; these also appear.
//Notifications Actions
private func configureUserNotifications() {
if #available(iOS 10.0, *) {
let tomorrowAction = UNNotificationAction(identifier: "tomorrowReminder", title: "Remind Me Tomorrow", options: [])
let dismissAction = UNNotificationAction(identifier: "dismissReminder", title: "Dismiss", options: [])
let category = UNNotificationCategory(identifier: "reminderNotification", actions: [tomorrowAction, dismissAction], intentIdentifiers: [], options: [.customDismissAction])
UNUserNotificationCenter.current().setNotificationCategories([category])
} else {
// Fallback on earlier versions
}
}
I have the same category set in the notification extension .plist file. And in the notification extension I have the following to change the text when the user taps on a action.
//Handle Notification Actions And Update Notification Window
private func didReceive(_ response: UNNotificationResponse, completionHandler done: (UNNotificationContentExtensionResponseOption) -> Void) {
if response.actionIdentifier == "tomorrowReminder" {
print("Tomrrow Button Pressed")
subLabel.text = "Reminder For Tomorrow"
subLabel.textColor = UIColor.blue
done(.dismissAndForwardAction)
}
if response.actionIdentifier == "dismissReminder" {
print("Dismiss Button Pressed")
done(.dismiss)
} else {
print("Else response")
done(.dismissAndForwardAction)
}
}
However the text does not change and none of the statements are called;
Over in the appDelegate I have the following;
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey : Any]? = nil) -> Bool {
if #available(iOS 10.0, *) {
UNUserNotificationCenter.current().delegate = self
configureUserNotifications()
}
}
extension AppDelegate: UNUserNotificationCenterDelegate {
#available(iOS 10.0, *)
private func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: (UNNotificationPresentationOptions) -> Void) {
completionHandler([.alert, .sound])
}
#available(iOS 10.0, *)
private func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: () -> Void) {
print("Recieved Action For \(response.actionIdentifier)")
if response.actionIdentifier == "tomorrowReminder" {
print("Tomorrow Reminder")
//Set new reminder for tomorrow using the notification content title
completionHandler()
}
if response.actionIdentifier == "dismissReminder" {
print("Dismiss Reminder...")
completionHandler()
}
}
}
Neither of these functions are actually called in the appDelegate either. I am not sure if the problem with updating the extension view is related to the app delegate. I don't think so, I have followed Apple's WWDC video as well as other tutorials and look at the document API and can't figure out;
Why is the Notification Extension Text Labels not updating ?
Why are the functions in the appDelegate not getting called ?
How can I using the notification content in the app delegate to use
for the action ?
PS: I have spent the past few weeks researching and trying to figure this out, it seemed fairly straight forward and I am unsure what I am missing. I know I am not the only one having these issues.

Answer 1

I haven't checked whole code of yours, but at least, these function headers need to be changed as follows:
func userNotificationCenter(_ center: UNUserNotificationCenter,
willPresent notification: UNNotification,
withCompletionHandler completionHandler: #escaping (UNNotificationPresentationOptions) -> Void) {
func userNotificationCenter(_ center: UNUserNotificationCenter,
didReceive response: UNNotificationResponse,
withCompletionHandler completionHandler: #escaping () -> Void) {
func didReceive(_ response: UNNotificationResponse,
completionHandler done: #escaping (UNNotificationContentExtensionResponseOption) -> Void) {
Simple rule:
Remove private, add #escaping.
You may have received wrong suggestions from Xcode, but with making them private, Objective-C entry points are not generated. iOS runtime uses Objective-C selectors internally, so it cannot find your methods, thus, they are not executed.