On Sun, Apr 20, 2008 at 4:25 PM, Don Arnel <[EMAIL PROTECTED]> wrote:
> I have two different class objects that need to know about each other (see
> below). But if I include the header from one class inside the header of the
> other class the compiler complains. Is this even possible?
>
> ClassOne.h:
> ----------------
>
> #import "ClassTwo.h"
>
> @interface ClassOne : NSObject {
>
> ClassTwo *objectTwo;
> }
>
> @end
> ----------------
>
>
> ClassTwo.h:
> ----------------
>
> #import "ClassOne.h"
>
> @interface ClassTwo : NSObject {
>
> ClassOne *objectOne;
> }
>
> @end
Pre-declare the classes with '@class' - eg
@class ClassTwo;
@interface ClassOne : NSObject {
ClassTwo *objectTwo;
}
@end
You'll still need to import 'ClassTwo.h' in your implementation file.
It's a good idea to do that instead of importing any of your own
headers within header files. Things can get a bit contorted
otherwise.
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