rac_signalForSelector: needs empty implementation

Question

I have a class that implements the UICollectionViewDelegate protocol.

I\'m using rac_signalForSelector: to register selection like this:

[self rac_signal         


        

Answer 1

Make sure you call -rac_signalForSelector: before you set your object as a delegate. Some Apple frameworks will check to see if your class responds to a certain delegate method selector when you set the delegate object, and cache that information, so if you haven't called -rac_signalForSelector: by that time and you don't explicitly implement the method, those delegate methods won't ever get called.