Question

I did in my AppDelegate:

@interface AppDelegate : UIResponder <UIApplicationDelegate, FBSessionDelegate> {
Facebook *facebook;
}

And followed the tutorial on Facebook Developers, but it is still doing four-times like:

1. Method declared here (Facebook.h):

   • (void)fbDidNotLogin:(BOOL)cancelled;

2. Required for direct or indirect protocol FBSessionDelegate (AppDelegate.h):

   @interface AppDelegate : UIResponder <UIApplicationDelegate, FBSessionDelegate> {
   Facebook *facebook;
   }
   

Is there something I forgot?

Answer 1

As your AppDelegate states to follow the FBSessionDelegate protocol, it needs to implement all required methods from this protocol.

So you need to implemented the fbDidNotLogin method in your AppDelegate.m like

- (void)fbDidNotLogin:(BOOL)cancelled {
    // Do something here
}