Answer by Michal Zaborowski for Why does Facebook iOS dialog for feed publish disappear after login?

Did you implemented facebook protocol FBSession in your view controller ?To detect that user is authenticated you have to call isSessionValid:

if (![[self.fbAppDelegate facebook] isSessionValid]) {    NSArray *permissions = [[NSArray alloc] initWithObjects:@"publish_stream",@"create_event",@"offline_access", nil];    [[self.fbAppDelegate facebook] authorize:permissions];}

and authorize inApp:

[self authorizeWithFBAppAuth:NO safariAuth:NO];