CODEWITHSUNDEEP
iphonecocoa-touchios4protocols
skålfyfan
skålfyfan

Reputation: 5281

Cannot find protocol declaration for 'MyObjectViewDelegate' when it is CLEARLY there ?1

I have a class like this..

#import "MyObjectAddView.h"
#import "MyAppDelegate.h"

#define myAppDelegate (MyAppDelegate *) [[UIApplication sharedApplication] delegate]

@class MyObjectAddView;

@interface AccountViewController : UIViewController <UIScrollViewDelegate, MyObjectAddViewDelegate, UIImagePickerControllerDelegate> {

    MyObjectAddView *myAddView;
    .....
}

@property (nonatomic, retain) IBOutlet MyObjectAddView *myAddView;

- (id) initWithSettings:(SettingsObject *)settings;

@end

WHY is it suddenly telling me that it Cannot find protocol declaration for 'MyObjectAddViewDelegate' when I'm clearly importing and including the @class for where the protocol is defined? Here how MyObjectAddView setup:

#import <UIKit/UIKit.h>
#import "MyAppDelegate.h"

#define myAppDelegate (MyAppDelegate *) [[UIApplication sharedApplication] delegate]

@protocol MyObjectAddViewDelegate;

@interface MyObjectAddView : UIView <UITextFieldDelegate> {

@private
    id <MyObjectAddViewDelegate> delegate;
    ....    
@public
    .....
}

@property(nonatomic, assign) id <MyObjectAddViewDelegate> delegate;
.....

@end

@protocol MyObjectAddViewDelegate <NSObject>
// expense == nil on cancel
- (void)myObjectAddViewDidFinish:(MyObjectAddView *)addView;

@end

Everything seems perfectly setup and I don't see any circular imports ?! Any suggestions why it might not be seeing the protocol definition in MyObjectAddView?

Thanks.

Upvotes: 6

Views: 12548

Answers (2)

jturolla
jturolla

Reputation: 6756

Synthesizing the discussion: another solution is to check for cyclical imports between the delegate implementation and protocol declaration. This solved my issue.

Upvotes: 6

Joe
Joe

Reputation: 57179

You do not need a forward reference to a class after you have imported the header for that class. Only time you do a forward reference is if you plan on including the header inside of the implementation file. Remove @class MyObjectAddView and if that fixes it let me know if not I may have another solution for you.

Upvotes: 8

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