Question

I got a very interesting problem here. My iPhone app has an UITabbarController as rootViewController in the AppDelegate.

If the app is opened the first time, it must be configured basically. For this purpose I create an UINavigationController and tell the tabbarController to present it modally:

firstRun = [[firstRunViewController alloc] init];
navCtrl = [[UINavigationController alloc] initWithRootViewController:firstRun];
[[self tabBarController] presentModalViewController:navCtrl animated:NO];

When the configuration is done, I’d like to get rid of the firstRunViewController. I’m using this technique very often, using -dismissModalViewControllerAnimated:.

But in this constellation this doesn’t work. It doesn’t matter from what controller I’m calling the dismiss.
I tried it via the tabbarController, the rootViewController, the currently active viewController, of cause self and several other controllers.

EVERY TIME I call -dismissModalViewControllerAnimated: I get this exception:

'UIViewControllerHierarchyInconsistency', reason: 'presentedViewController for controller is itself on dismiss for: <UINavigationController:…

Can anybody help? Thanks in advance, with kind regards, Julian

EDIT
In my AppDelegate I’m using a UITabbarController as rootViewController for the main window:

self.window.rootViewController = self.tabBarController;
[self.window makeKeyAndVisible];

Then I’m creating an UINavigationController and tell the UITabbarController to present the modalViewController:

UINavigationController *navCtrl = [[UINavigationController alloc] initWithRootViewController:firstRun];
[[self tabBarController] presentModalViewController:navCtrl animated:NO];

When I now call -dismissModalViewControllerAnimated: on the firstViewController I’m getting the error from above.

Answer 1

I finally found the answer myself!
I just couldn’t see the wood for the trees! I’m quite happy right now! 🙂

I did really silly things: In the last viewController of the setup viewControllers I had to change the tabars viewControllers corresponding to whether the user is administrator or not. So I did:

appDelegate.tabBarController.viewControllers = [NSArray arrayWithObjects:appDelegate.readState,
                                                appDelegate.navCtrl,
                                                appDelegate.settings, nil];

You can see that I was adding the AppDelegate’s “navCtrl” to the tabbar’s viewControllers. So I was trying to dismiss a viewController I just added to the parentViewControllers (UITabbarController) sub-controllers.

Dismissing something I want to present just in the same moment is NOT advisable! :))