How to do a login screen?

Question

I have this working but I don't think it is working correctly so I just wanted to get your feedback. I am trying to display a screen that has two buttons - one that takes you to a login screen and the the allows you to register.

II am testing in the appDelegate if they are logged in and if they aren't I am showing the signLogIN view.

signLogIN = [[LoginOrSignUPViewController alloc] init];

signLogIN.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
signLogIN.tabBarController = mainAPPTabBarController;
signLogIN.mainWindow = window;
[window addSubview:[signLogIN view]];
//[signLogIN release];

(I release in the appDelegate dealloc - if I release here it blows up when they select to either login or register).

I did try doing:-

[mainAPPTabBarController presentModalViewController:signLogIN animated:NO];

But it made no difference.

Curiously I can see that the dealloc in LoginOrSignUPViewController is called straight away - why is that? I can't tell where it is being called from.

From LoginOrSignUPViewController I am then displaying the login screen by doing:-

[self retainCount] = 1

LoginViewController *logINVC = [[LoginViewController alloc] initWithNibName:@"LoginViewController" bundle:nil];

logINVC.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
logINVC.delegate = self;
logINVC.tabBarController = self.tabBarController;
[self presentModalViewController:logINVC animated:YES];
[logINVC release];

now [self retainCount] = 3 = why did it go to three????

As you can see there is a delegate that calls back to the signLogIn view to close the view as follows:-

[self retainCount] = 3
[mainWindow bringSubviewToFront:tabBarController.view];
tabBarController.selectedIndex = 0;

[self.view removeFromSuperview];
[self dismissModalViewControllerAnimated:NO];
[self release];

[self retainCount] = 3  -- still 3 it never goes away

So here is my main problem LoginOrSignUPViewController never goes away it just sits behind my main view. The only line that makes any difference is the [mainWindow bringSubViewToFront. Does anyone have any ideas as to how to make the LoginOrSignUPViewController disappear?

Thanks very much Cheryl

Answer 1

Have you tried this in your view controller's viewDidLoad:

LoginOrSignUPViewController *signLogIN = [[LoginOrSignUPViewController alloc] init];
[self presentModalViewController:signLogIN animated:NO];
[signLogIn release];