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iOS Build an Interactive Story App with Swift Personalizing the Story Modifying Constraints

Qasa Lee
Qasa Lee
18,916 Points
Posted by Qasa Lee
Qasa Lee
18,916 Points

How to understand "func keyboardWillShow(_ notification: Notification)" be called in the selector without parameter?

I know in the #selector() we just have to pass in the name of the method we're calling, but how can keyboardWillShow(_ notification: Notification) know the notification without giving any clue? NotificationCenter.default.addObserver(self, selector: #selector(self.keyboardWillShow), name: Notification.Name.UIKeyboardWillShow, object: nil) the code above can send the exact notification to the function keyboardWillShow()?! Or just because the #selector(self.keyboardWillShow) can grab the notification since it knows this comes from UIKeyboardWillShow ?!