How can I find out if the superclass also implements the same method that my subclass implements?

Question

I want to know if the superclass implements method A from my subclass, which also implements method A, so that I can safely call [super A] from my subclass without getting an exception.

NSObject's respondsToSelector: doesn't work in this case, since that will always return true (because my subclass implements the method in question). Any ideas?

Answer 1

You can use the class method instancesRespondToSelector: to do this. So from the subclass you can call [[self superclass] instancesRespondToSelector:@selector(...)] to determine if the superclass implements the method you require.