self.delegate = self; what’s wrong in doing that?

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See this thread

http://www.cocoabuilder.com/archive/cocoa/241465-iphone-why-can-a-uitextfield-be-its-own-delegate.html#241505

Basically, the reason for the “freeze” when you click on your UITextField with itself as a delegate is that respondsToSelector is calling itself -> infinite recursion.

UITextField is unique AFAIK. You can usually use a class as its own delegate with no particular problems. For UITextField you must create an actual delegate (that could, of course, call methods on the UITextField for which it’s a delegate. Just be careful to avoid retain loops, even if you’re using ARC).

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