Swift version: 5.6
Once your app has the user’s permission to do so, you can show numbers over your icon to indicate outstanding tasks, unread messages, game invites, or whatever makes sense for your app.
You do need to get their permission, though, so you should start by adding an import for the UserNotifications framework, then request permission with code like this:
UNUserNotificationCenter.current().requestAuthorization(options: .badge) { (granted, error) in
if error != nil {
// success!
}
}
Once you have that permission – anywhere inside the // success!
comment or at some point afterwards – you can place an integer badge of your app icon with one line of code:
UIApplication.shared.applicationIconBadgeNumber = 1
SAVE 50% To celebrate WWDC23, all our books and bundles are half price, so you can take your Swift knowledge further without spending big! Get the Swift Power Pack to build your iOS career faster, get the Swift Platform Pack to builds apps for macOS, watchOS, and beyond, or get the Swift Plus Pack to learn advanced design patterns, testing skills, and more.
Available from iOS 2.0
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
Link copied to your pasteboard.