Over importing in Prefix.pch? (#ifdef __OBJC__)

Question

So, if I'm remembering things correctly, anything imported in the Prefix.pch in my project will get imported into each of my new classes. However, by default, any NSObject subclasses import Foundation/Foundation.h and view subclasses import UIKit/UIKit.h in their respective headers.

Is this not an over import? Have I not essentially imported the Framework headers twice in my classes?

Answer 1

It's harmless. The #import preprocessor directive does nothing if the specified file has already been imported.

Answer 2

There isn't any way to avoid the warning. Warnings are warnings and not errors because they may be wrong. In this case, ignore the warning.