Type 'Notification.Name' (aka 'NSNotification.Name') has no member 'UIDevice'

问题

Here is my code which was working before.

NotificationCenter.default.addObserver(self, selector: #selector(ImageScrollView.changeOrientationNotification), name: Notification.Name.UIDevice.orientationDidChangeNotification, object: nil)

回答1:

Remove Notification.Name. prefix:

NotificationCenter.default.addObserver(self, selector: #selector(ImageScrollView.changeOrientationNotification), name: UIDevice.orientationDidChangeNotification, object: nil)

The constants for notifications names were moved in iOS 12 SDK which came with Xcode 10.

来源：https://stackoverflow.com/questions/54693092/type-notification-name-aka-nsnotification-name-has-no-member-uidevice