CODEWITHSUNDEEP
iosobjective-cuicolor
Lee Probert
Lee Probert

Reputation: 10839

UIColor resolveClassMethod not resolving from selector

I'm having issues with this code :

NSString *value = (NSString*)[self.colorsData objectForKey:key]; 
SEL selector = NSSelectorFromString(value);   
BOOL isColorMethod = [[UIColor class] resolveClassMethod:selector];

The String value being passed in as the SEL selector is @"redColor", which as you know is a class method of UIColor; but the 'isColorMethod' BOOL always returns NO.

This code is for a Styling engine I am building.

Upvotes: 0

Views: 508

Answers (2)

sunkehappy
sunkehappy

Reputation: 9091

You have used the wrong method. If you want to know whether something is a string method you should use respondsToSelector: and instancesRespondToSelector:.

Upvotes: 1

Lee Probert
Lee Probert

Reputation: 10839

Ok, I have a fix ... you can do this instead, despite respondsToSelector not showing as an available class method :

BOOL isColorMethod = [[UIColor class] respondsToSelector:selector];

I'm not sure why resolveClassMethod doesn't work when respondsToSelector does, however.

So, although I am answering my own question I would be interested in knowing what is happening here.

Upvotes: 0

Related Questions