Problems accessing certain types in NSObject subclass

Question

In the past I have created subclasses of NSObject and return various types from strings to UIColor's.

Here is an example piece of code:

However I recently started a new project in iOS 8 and have gone to do the same thing but I am getting the following error:

I am able to return NSString's, NSDictionary's, etc but am unable to return things that are UI based. So UIColor, UITabBar, etc.

The first project was created before updating to Xcode 6 and the second one (one with issue) was created after upgrading. Both are using Objective C.

I can't see any difference between the 2 files. Does anyone know why I might be experiencing this issue?

Many thanks.

Answer 1

Add on top

#import <UIKit/UIKit.h>

That's because UIColor is class from UIKit framework, so you need to import UIKit as well.

So why this error occurred from Xcode 6 ?
Because Apple has removed PCH default support, refer to my previous answer