Adding the same category to multiple classes

Question

I have an Objective-C category that I\'d like to add to multiple classes without duplicating the code contained in the category. I simply want to add the same methods to multipl

Answer 1

For the rest of your stuff there, as far as I know you would have to go back and make a common subclass for your three classes to get what you want. But what I can point out is that instead of doing your own isSupported method there it would probably be better to simply use the respondsToSelector method of NSObject to tell if your class implements whatever special method you want those three classes to use, which should be better than checking against all those classes. Defiantly better if you add additional classes as you don't have to maintain or expand that giant list of isMemberOfClass checks