Not to be confused with the notifications a user receives in the Notification Center (or push notifications), a notification is a message sent to one or more observing objects to inform them of an event in a program.
To do: explain what they are, how to use them and why they are useful.
Relevant APIs:
- NSNotificationCenter
- NSDistributedNotificationCenter
- CPDistributedNotificationCenter
- CPDistributedMessagingCenter
- CFNotificationCenter [Archived 2014-06-03 at the Wayback Machine]
- notify [Archived 2014-06-04 at the Wayback Machine]
Darwin notifications are handled by notifyd.
List of Notification pages
Here is a list of notification pages that have been linked to from this wiki.
This list is incomplete. You can help by expanding it. Or creating the listed pages. You can use Cycript and NotificationExplorer to retrieve the notifications that exist in a process.