Calling UIViewController method that imports AppDelegate from AppDelegate

Question

I have a BaseViewController that all my UiViewController extend.

This BaseViewController also uses AppDelegate and therefor I import it like this:

@interface BaseViewController : UIViewController{
    AppDelegate *appDelegate;  
}

In AppDelegate, I need to use a method applicationDidBecomeActive. In the method I would like to use a method of BaseViewController.

So I imported the BaseViewController:

#import "BaseViewController.h" but then I get a compilation error in BaseViewController :

Unkown type AppDelegate

What is wrong?

score 1 · Accepted Answer · answered Jan 06 '13 at 07:15

1

in your .h file, add this line:

@class AppDelegate

at top Then re-try

answered Jan 06 '13 at 07:15

Vahid Farahmand

Well this was the correct answer. But can you please explain why? – Dejell Jan 06 '13 at 07:17
Try this: http://stackoverflow.com/questions/6872154/what-does-class-do-in-ios-4-development – Vahid Farahmand Jan 06 '13 at 07:19

1 Answers1