willEnterForeground
An identifier for a message about a host app preparing to run in the foreground.
Declaration
static var willEnterForeground: NotificationCenter.BaseMessageIdentifier<NSExtensionContext.WillEnterForegroundMessage> { get }Discussion
Use this identifier with NotificationCenter’s addObserver(of:for:using:) or messages(of:for:bufferSize:) methods to observe messages of type NSExtensionContext.WillEnterForegroundMessage.