fbDidLogin is not called. ios5
===

I've been spending days on doing a simple Facebook post through an app. I used this [tutorial](http://gabriel-tips.blogspot.com/2011/10/how-to-post-on-facebook-wall-through.html) and found out that fbDidLogin is not called. As I've been looking for solutions, I've found out that [this](http://stackoverflow.com/questions/4244609/fbdidlogin-not-called) is a way to make the fbDidLogin be called.

Enlighten me as to what I may be missing out. 

Attached here is the essential methods for FB integration in my `app delegate`. 

App delegate.m

    @synthesize window = _window;
    @synthesize wallSnapVC = _wallSnapVC;
    
    - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
    {
        // Override point for customization after application launch.
        
        self.wallSnapVC = [self.window.rootViewController.storyboard instantiateViewControllerWithIdentifier:@"wallSnapViewController"];
        self.window.rootViewController = self.wallSnapVC;
        [self.window makeKeyAndVisible];
        
        return YES;
    }
    
    - (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url
    {
        return [[_wallSnapVC facebook] handleOpenURL:url];
    }
    
    - (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation
    {
        return [[_wallSnapVC facebook] handleOpenURL:url];
    }

App delegate.h

    @class WallSnapViewController;
    
    @interface WallSnapAppDelegate : UIResponder <UIApplicationDelegate>
    
    
    @property (strong, nonatomic) UIWindow *window;
    @property (strong, nonatomic) IBOutlet WallSnapViewController *wallSnapVC;
    
    
    @end

