All notifications disappearing after opening one of them

Question

I have a server that sends me push notifications and let\'s say that I have 5 notifications on my phone. If I open one of them all other notifications disappears. I want onl

Answer 1

The solution is to set the applicationIconBadgeNumber to the real number of notifications the user has in the notification center. I made a function for this:

func updateIconBadge() {
    UNUserNotificationCenter.current().getDeliveredNotifications { notifications in
        DispatchQueue.main.async {
            UIApplication.shared.applicationIconBadgeNumber = notifications.count
        }
    }
}

For more info (like where to call to this function) you may want to check my original answer here: https://stackoverflow.com/a/54296486/8157190

Answer 2

If you use OneSignal SDK in your app, and you have the problem of disappearing notifications after opening one, you must add key OneSignal_disable_badge_clearing to the Info.plist file in Xcode, as a Boolean type set to YES.

More info here https://documentation.onesignal.com/docs/badges

Answer 3

By setting the applicationIconBadgeNumber to 0, you also remove every notification from the notification center.

This has also been discussed here: iOS application: how to clear notifications?

Furthermore, it is not possible to programmatically remove a single notification, but from iOS8 on, the OS will handle this for you when a user taps a single notification. This has also been discussed here: Remove single remote notification from Notification Center