Dev:CFUserNotification

Although not part of the iPhone SDK, CFUserNotification does exist on the iPhoneOS. These notifications are shown on like standard alert views.

CFUserNotifications are sent to SpringBoard via the com.apple.SBUserNotification service, and a SBUserNotificationAlert will be shown. Because IPC is involved, you should use UIAlertView instead.

Dialog description keys
Unlike its Mac OS X counterpart, the iPhoneOS's user notification recognizes a different set of dialog description keys: