A container for information broadcast through a notification center to all registered observers.
SDKs
- iOS 7.0+
- macOS 10.9+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
- Xcode 8.0+
Framework
- Foundation
Declaration
struct Notification
Structure
Notification
Topics
Creating a Notification
init(name: NotificationInitializes a new notification.
typealias NotificationAn alias for a type used to represent the name of a notification.
struct NSNotificationThe type used for the name of a notification.
Getting Notification Information
var name: NotificationA tag identifying the notification.
var object: Any?An object that the poster wishes to send to observers.
var userStorage for values or objects related to this notification.
Comparing Notifications
static func != (Notification, Notification) -> BoolReturns a Boolean value indicating whether two values are not equal.
static func == (Notification, Notification) -> BoolCompares two notifications for equality.
Describing a Notification
var description: StringA textual description of the notification.
var debugA textual description of the notification suitable for debugging.
var customA mirror that reflects the notification.
var hashThe computed hash value for the notification.
Using Reference Types
class NSNotificationAn object containing information broadcast to registered observers that bridges to Notification; use NSNotification when you need reference semantics or other Foundation-specific behavior.
typealias NotificationAn alias for this value type's equivalent reference type.
Instance Methods
Relationships
See Also
Notifications
class NotificationA notification dispatch mechanism that enables the broadcast of information to registered observers.
class NotificationA notification center buffer.