Class Delegate does not implement protocol - iphone

Question

I`m doing something wrong here but I can't figure out what it is .
AppDelegate.h
#import <UIKit/UIKit.h>
#interface AppDelegate : NSObject <UIApplicationDelegate, UIScrollViewDelegate> {
UIWindow *window;
UIScrollView *scrollView;
UIPageControl *pageControl;
NSMutableArray *viewControllers;
UIView *flipside;
// To be used when scrolls originate from the UIPageControl
BOOL pageControlUsed;
}
#property (nonatomic, retain) IBOutlet UIWindow *window;
#property (nonatomic, retain) IBOutlet UIScrollView *scrollView;
#property (nonatomic, retain) IBOutlet UIPageControl *pageControl;
#property (nonatomic, retain) IBOutlet UIView *flipside;
#property (nonatomic, retain) NSMutableArray *viewControllers;
- (IBAction)showInfo:(id)sender;
- (IBAction)changePage:(id)sender;
#end
AppDelegate.m
- (IBAction)showInfo:(id)sender {
FlipsideViewController *controller = [[FlipsideViewController alloc] initWithNibName:#"FlipsideView" bundle:nil];
controller.delegate = self;
controller.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController:controller animated:YES];
[controller release];
}
This is where I`m getting :
warning: class 'AppDelegate' does not implement the 'FlipsideViewControllerDelegate' protocol.
After line :
controller.delegate = self;
My FlipsideViewController.h looks like this :
#import <UIKit/UIKit.h>
#protocol FlipsideViewControllerDelegate;
#interface FlipsideViewController : UIViewController {
id <FlipsideViewControllerDelegate> delegate;
}
#property (nonatomic, assign) id <FlipsideViewControllerDelegate> delegate;
- (IBAction)done:(id)sender;
#end
#protocol FlipsideViewControllerDelegate
- (void)flipsideViewControllerDidFinish:(FlipsideViewController *)controller;
#en
Any help would be greatly appreciated :)

Answer 1

It's exactly what the error message says. AppDelegate just doesn't implement the protocol. In your header file, add FlipsideViewControllerDelegate between the brackets (i.e. <UIApplicationDelegate, UIScrollViewDelegate, FlipsideViewControllerDelegate>), and implement the -flipsideViewControllerDidFinish: method.

Answer 2

try adding FlipsideViewControllerDelegate to the appDelegate
#interface AppDelegate : NSObject <UIApplicationDelegate, UIScrollViewDelegate,FlipsideViewControllerDelegate> {
UIWindow *window;
UIScrollView *scrollView;
UIPageControl *pageControl;
NSMutableArray *viewControllers;
UIView *flipside;
// To be used when scrolls originate from the UIPageControl
BOOL pageControlUsed;
}