I am using NSNotificationCenter object. I need to know all the listeners and the events they listen to. Is there anything that I can do to get this listing?
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I am using NSNotificationCenter object. I need to know all the listeners and the events they listen to. Is there anything that I can do to get this listing?
Nope; why do you need to know?
The whole goal of notifications is to create a loosely couple system of observers vs. notifiers. The very question of “knowing all” doesn’t make sense as it is perfectly possible that there will be observers of the notification that come from code you didn’t author at all (assuming a system notification).
And, of course, if it is a notification that you create that is named uniquely to your app, then you should also know all possible observers.