In trying to de-couple my model from the view controllers that display fetched data, when an asynchronous fetch completes, I post an NSNotification.
I have been developing Cocoa Apps for a while and I have a conceptual question regarding the Singleton \"pattern\" and the use of the NSNotificationCenter for communication.
I seem to have the same problem as here: NSTask waitUntilExit hanging app on jailbroken iOS Here\'s what I\'ve got via NSNotification (like above), yet the taskEnded: alert(s) aren\'t coming up. The
My question is in regards the object that gets added to a -postNotificationName:object: userInfo: method.
Since the NSNotification invokes its selector on a thread other than the main thread, I notice that any changes that you make to UIViews or other interface elements in response to that notification ar
I am trying to use NSWorkspaceSessionDidBecomeActiveNotification to detect fast user switching but it doesn\'t seems to fire my handler.
I\'m using a class which downloads a file asynchronously .. works a bit like this // in AViewController.m
So it appears as though my MPMoviePlayer no longer wants to seek forward, despite it being the case that seeking is done internally by the MoviePlayer, so all I should be doing is setting up notificat
Hey there, so I\'ve got an NSObject subclass sending out a message via开发者_运维百科 the notification center,and I\'m sending out my notifications out to the object nil but the only object that can r
Is it OK to use -removeObserver: first and then call -addObserver: with the same name? Or is it a rule to have -addObserver: first before -removeObserver:?
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