可以迅速了解通知是在3发出的吗？

Question

I know how to raise local notifications and show actions on it. When a user clicks on actions I can handle it on below method:

func userNotificationCenter(_ center: UNUserNotificationCenter, 
 didReceive response: UNNotificationResponse, withCompletionHandler 
 completionHandler: @escaping () -> Void) {
   // Do something here
    if response.notification.request.content.userInfo["backUp"] {
     doBackUpHere()
     // Do other methods
    }
}

However, my situation is a little different. I need to do some functions when a notification raised before clicking on it or on it's actions(application is foreground or background). Other methods run when the user clicks on notification

func notificationRaised (notification: Notification){
  // to do if notification is 
  if notification.userInfo["backUp"] {
    doBackUpHere()
  }
}

Update

Please see @Sergey answer and our comments to understand better my propose.

Answer 1

If I understand your question correctly, you want to make an action when a notification arrives, without any user input. If so, I suggest you take a look at silent push notifications in iOS - they do just that, unfortunately - not showing in the user interface at all.

You could also experiment with local notifications on a timer, but remember that you can only run code when a user taps on a notification and/or one of its actions as the app is not guaranteed to be alive by the time a scheduled local notification is shown.

Answer 2

Have you heard about 'Silent push notifications' ? I think it is exactly what you are looking for ;) You can get that notification, do your stuff, and then show a local notification if you want.