A message the system sends when the extension’s host app moves from the active to the inactive state.
Your extension can use this message to adjust the extension's activity when it becomes inactive.
For example, you might use this message to save any unsaved data to prevent it from being lost.
Observe this message with the identifier ``NotificationCenter/MessageIdentifier/willResignActive-9z4xc``, or specify its type directly to the `addObserver(of:for:using:)` method.
The ``NotificationCenter/MainActorMessage/Subject`` of this message type is ``NSExtensionContext``.
This message interoperates with the notification ``NSNotification/Name/NSExtensionHostWillResignActive``.
The system notifies observers of the message when the ``NotificationCenter`` posts the notification.
Similarly, the system notifies observers of the notification when it posts the message.
Converts a posted notification into this main actor message type for any observers.
To implement this method in your own `MainActorMessage` conformance, retrieve values from the ``Notification``'s ``Notification/userInfo`` and set them as properties on the message.
- Parameter notification: The posted ``Notification``.
- Returns: The converted `MainActorMessage` or `nil` if conversion is not possible.
get · iOS 26.0+
name
TypeScript
static get nameValue(): NSNotification_Name
Swift declaration
static var name: Notification.Name { get }
A optional name corresponding to this type, used to interoperate with notification posters and observers.
