Question

I have a subclass of UIImageView and would like to pass self as a parameter to the delegate. I get a error “Expected ‘)’ before MyImageView”. I need to pass the object to the delegate so the delegate can read certain properties from the object.

#import <UIKit/UIKit.h>
@protocol MyImageViewDelegate <NSObject>
-(void) buttonPressedForView:(MyImageView *) imageView;  //line with ERROR...
@end

@interface MyImageView : UIImageView {
    id <MyImageViewDelegate> delegate;
    BOOL _imageMode;
}

@property (nonatomic,assign) id <MyImageViewDelegate> delegate;
@property (nonatomic,readonly) BOOL imageMode;

Answer 1

I think you need a forward declaration of MyImageView before your protocol declaration.

@class MyImageView;

@protocol MyImageViewDelegate <NSObject>
    -(void) buttonPressedForView:(MyImageView *) imageView;
@end