NSExtensionHostDidEnterBackground
Posted when the extension’s host app begins running in the background.
Declaration
static let NSExtensionHostDidEnterBackground: NSNotification.NameDiscussion
Extensions can use this notification to stop tasks and prepare the extension to be suspended. The object parameter contains the NSExtensionContext object. This notification does not contain a userInfo dictionary.
Extensions receive only a short amount of time to perform any background work. If you need more time to complete critical tasks, use the methods of the ProcessInfo class to request that time.