New to Swift. I have two snippets below:
NotificationCenter.default.addObserver(self,
selector:#selector(ViewController.notificationReceived),
name: Notification.Name(rawValue: name), object: nil)
@objc func notificationReceived(notification:Notification){
let x = notification.userInfo!
print("\(x["name"]!)")
}
and finally
let x:UITapGestureRecognizer = UITapGestureRecognizer(target: self,
action: #selector(tapped))
self.addGestureRecognizer(x)
func tapped(){
print("tapped")
self.delegate!.theViewTapped()
}
Why is it that for the notificationCenter? I am supposed to provide the @objc tag for the selector parameter but not for the UITapGestureRecognizer action parameter?
What exactly is the difference between Selector and Action in Swift?