gistfile1.m

.h file declarations
@property (strong, nonatomic) UINavigationController *navigationController;
.m app delegate implementation
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
self.navigationController = [[UINavigationController alloc] init];
self.viewController = [[ViewController alloc] initWithNibName:@"ViewController" bundle:nil];
[self.navigationController pushViewController:self.viewController animated:YES];
// Override point for customization after application launch.
self.window.rootViewController = self.navigationController;
[self.window makeKeyAndVisible];
return YES;
}
// loading a view based on login
/*
* Callback for session changes.
*/
- (void)sessionStateChanged:(FBSession *)session
state:(FBSessionState) state
error:(NSError *)error
{
switch (state) {
case FBSessionStateOpen:
if (!error) {
// We have a valid session
NSLog(@"User session found");
//UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithTitle:@"Back" style:UIBarButtonItemStylePlain target:nil action:nil];
testViewController *tv = [[testViewController alloc] init];
[self.navigationController pushViewController:tv animated:YES];
self.navigationController.navigationBarHidden = NO;
//navigationController.navigationItem.backBarButtonItem = backButton;
//[self.window setRootViewController:self.navigationController];
}
break;
case FBSessionStateClosed:
case FBSessionStateClosedLoginFailed:
[FBSession.activeSession closeAndClearTokenInformation];
break;
default:
break;
}
[[NSNotificationCenter defaultCenter]
postNotificationName:FBSessionStateChangedNotification
object:session];
if (error) {
UIAlertView *alertView = [[UIAlertView alloc]
initWithTitle:@"Error"
message:error.localizedDescription
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alertView show];
}
}
// code to hide the navigation bar in the base view controller
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
self.title = @"title";
self.navigationController.navigationBarHidden = YES;
}