With KVO in Objective-C is there a way to detect what observers my object has set on other objects?

Asked Mar 03 '15 at 12:18

Active Mar 03 '15 at 12:18

Viewed 47 times

Let there be an object A that observers a property on object B. Is there a way to ask A what properties it is observing and then see that it is observing a property on object B.

For for example:

[B addObserver:(A*)self forKeyPath:@"bytesUploaded"
                           options:NSKeyValueObservingOptionNew
                                        context:A_KVOContext];

Now is there a way to ask A what object's its observing?

asked Mar 03 '15 at 12:18

Andrew Paul Simmons

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I think even A doesn't know, that he is something observing. B should know, at which object call `observeValueForKeyPath...` – Cy-4AH Mar 03 '15 at 12:25
is this really the case‽ I wouldn't actually be surprised, just a bit disappointed... – Andrew Paul Simmons Mar 03 '15 at 13:28

With KVO in Objective-C is there a way to detect what observers my object has set on other objects?

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