Swift UNUsernotification applicationIconBadgeNumber displays always one

Question

I've set the user notification. They got deliver well but the badge on the app icon is always one. Here's my code:

let center = UNUserNotificationCenter.current()
let options: UNAuthorizationOptions = [.alert, .badge, .sound];

center.requestAuthorization(options: options) {
        (granted, error) in
        if !granted {
            // ask for permission
  }
}

When the use click the button i schedule the notif:

 @IBAction func saveBtnPressed(sender: UIButton) {
    scheduleNotif()
}

Here's the scheduleNotif function

 func scheduleNotif() {
    let dateformatter = DateFormatter()
    dateformatter.dateStyle = DateFormatter.Style.medium
    dateformatter.timeStyle = DateFormatter.Style.short
    let dateFromString = dateformatter.date(from: selectDateTextField.text!)
    let fireDateOfNotification: Date = dateFromString!

    //Notif are enabled
    let content = UNMutableNotificationContent()
    content.title = notifTitleTextField.text!
    content.body = notifNoteTextView.text
    content.sound = UNNotificationSound.default()
    content.badge = UIApplication.shared.applicationIconBadgeNumber + 1 as NSNumber

    var trigger: UNCalendarNotificationTrigger
    var triggerDate = DateComponents()
    trigger = UNCalendarNotificationTrigger(dateMatching: triggerDate, repeats: false)
    let titleNospace = notifTitleTextField.text?.replacingOccurrences(of: " ", with: "")
    var identifier = titleNospace
    let request = UNNotificationRequest(identifier: identifier, content: content, trigger: trigger)
    self.center.add(request, withCompletionHandler: { (error) in
        if let error = error {
            print(error.localizedDescription)
        }
    })
}

Any idea why the badge will always display one and never increment as the notifications are delivered?

Thank you

Answer 1

I think you need to increment applicationIconBadgeNumber. So replace

content.badge = UIApplication.shared.applicationIconBadgeNumber + 1 as NSNumber

By:

UIApplication.shared.applicationIconBadgeNumber += 1
content.badge = UIApplication.shared.applicationIconBadgeNumber as NSNumber