Facebook iOS SDK, Logout (CloseAndClearTokenInformation) not working? - ios

Question

I've set up the Facebook iOS SDK with my app, and everything works fine. I can login using Facebook, but for some reason when I try and click my "Logout" button (top right, see image below), it doesn't do anything. I'm using a Storyboard to create my app (the login xib opens on top of my existing storyboard), and everything in my AppDelegate seems correct. What am I missing? See snippets of code below.
AppDelegate.m
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
// Override point for customization after application launch.
self.mainViewController = [[SSViewController alloc]
initWithNibName:#"SSViewController" bundle:nil];
self.navController = [[UINavigationController alloc]
initWithRootViewController:self.mainViewController];
self.window.rootViewController = self.navController;
[self.window makeKeyAndVisible];
if (FBSession.activeSession.state == FBSessionStateCreatedTokenLoaded) {
// Yes, so just open the session (this won't display any UX).
[self openSession];
} else {
// No, display the login page.
[self showLoginView];
}
return YES;
}
- (void)showLoginView
{
UIViewController *topViewController = [self.navController topViewController];
UIViewController *modalViewController = [topViewController modalViewController];
// If the login screen is not already displayed, display it. If the login screen is
// displayed, then getting back here means the login in progress did not successfully
// complete. In that case, notify the login view so it can update its UI appropriately.
if (![modalViewController isKindOfClass:[SSLoginViewController class]]) {
SSLoginViewController* loginViewController = [[SSLoginViewController alloc]
initWithNibName:#"SSLoginViewController"
bundle:nil];
[topViewController presentViewController:loginViewController animated:NO completion:nil];
} else {
SSLoginViewController* loginViewController =
(SSLoginViewController*)modalViewController;
[loginViewController loginFailed];
}
}
SSViewController.m
-(void)logoutButtonWasPressed:(id)sender {
[FBSession.activeSession closeAndClearTokenInformation];
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc]
initWithTitle:#"Logout"
style:UIBarButtonItemStyleBordered
target:self
action:#selector(logoutButtonWasPressed:)];