Question

I’ve searched but I did not get with the solution. I have a class which inherits from NSObject. It has the following imports:

#import <Foundation/Foundation.h>
#import "Constants.h"
#import "CommonProtocols.h"
#import "SomeClass.h"

@interface SomeComtroller : NSObject

Than I have SomeClass.

 #import "SomeController.h"

 @interface SomeClass : NSObject
 {
     SomeController *myController; // ERROR!
 } 
 @end

However, I can’t define SomeController in SomeClass. It gives me the error, I really want to have a property of SomeController in SomeClass, and have in the controller a property of someClass.

Answer 1

You have a circular dependency — SomeClass.h imports SomeController.h, which imports SomeClass.h, which imports…

The solution is to move the imports into the implementation files, and just forward-declare the other classes you’re using with the @class directive (e.g. @class SomeController; in SomeClass.h).