How to post and receive an NSNotifications (Objective C) | Notifications (in Swift)?

Question

Is there an easy-to-grock pattern how to send a NSNotification (Objective C) | Notification (in Swift) and how to receive one? Code snippet? The docs write like 150 pages on

Answer 1

Swift Version for the same :

Whenever you need to post the notification :

NotificationCenter.default.post(name: NSNotification.Name(rawValue: "UpdateAccepted"), object: self)

On controller where you want to receive the notification :

override func viewDidLoad(_ animated: Bool) {
    super.viewDidLoad(true) {
    NotificationCenter.default.addObserver(self, selector: #selector(updateAccepted(notification:)), name: NSNotification.Name(rawValue: "UpdateAccepted"), object: nil)
}

deinit {
    NotificationCenter.default.removeObserver(self, name: NSNotification.Name(rawValue: "UpdateAccepted"), object: nil)
}

@objc func updateAccepted(notification: Notification) {
    handleRefresh()
}