How to update UITextView after login - ios

Question

I am trying to integrate Facebook to my iOS app with ARC. To use FB SDK, I have disabled ARC with "-fno-objc-arc" for those files. However, it still have EXC_BAD_ACCESS error and I need to change
#property(nonatomic, assign) id<FBSessionDelegate> sessionDelegate;
to
#property(nonatomic, retain) id<FBSessionDelegate> sessionDelegate;
The login is working now but the UITextView is not updated after login
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
AppDelegate *delegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
if ([defaults objectForKey:#"FBAccessTokenKey"]
&& [defaults objectForKey:#"FBExpirationDateKey"]) {
[delegate facebook].accessToken = [defaults objectForKey:#"FBAccessTokenKey"];
[delegate facebook].expirationDate = [defaults objectForKey:#"FBExpirationDateKey"];
[defaults synchronize];
}
if (![[delegate facebook] isSessionValid])
{
[[delegate facebook] authorize:nil];
}
}
- (void)fbDidLogin
{
AppDelegate *delegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
[defaults setObject:[[delegate facebook] accessToken] forKey:#"FBAccessTokenKey"];
[defaults setObject:[[delegate facebook] expirationDate] forKey:#"FBExpirationDateKey"];
[defaults synchronize];
[[delegate facebook] requestWithGraphPath:#"me" andDelegate:self];
}
- (void)request:(FBRequest *)request didLoad:(id)result
{
if ([result isKindOfClass:[NSArray class]]) {
result = [result objectAtIndex:0];
}
if ([result objectForKey:#"name"]) {
self.uitextview.text = [result objectForKey:#"name"];
}
}
I have checked that "[result objectForKey:#"name"]" will return a result but "self.uitextview" is not recognized.
How do I update a UITextView after successful login?

Answer 1

Found out that the ViewController init in Appdelegate can't be used as shown in Facebook Hackbook sample.
Replace with the following declaration:
UITabBarController *tabBarController = (UITabBarController *) self.window.rootViewController;
ViewController *viewcontroller = [[tabBarController viewControllers] objectAtIndex:4];
http://www.raywenderlich.com/5138/beginning-storyboards-in-ios-5-part-1