A message the system sends when the device's power state changes.
After your observer receives this notification, query the ``ProcessInfo/isLowPowerModeEnabled`` property to determine the current power state of the device.
If Low Power Mode is active, take appropriate steps to reduce activity in your app. Otherwise, your app can resume normal operations.
Observe this message with the identifier ``NotificationCenter/MessageIdentifier/powerStateDidChange``, or specify its type directly to the `addObserver(of:for:using:)` method.
The ``NotificationCenter/MainActorMessage/Subject`` of this message type is ``ProcessInfo``.
This message interoperates with the notification ``NSNotification/Name/NSProcessInfoPowerStateDidChange``.
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 asynchronous message type for any observers.
To implement this method in your own `AsyncMessage` 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 `AsyncMessage`, 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.
