iPad : two-stage method implementation

here is my problem, I hope someone can help me.

My iPad app is made like this : I have several viewControllers added as tabs in a tabBarController added to window in my appDelegate. In each of these viewControllers I got two navigationContro开发者_JAVA百科llers with one viewController in.

• Appdelegate
  • TabBarController
    • viewController
      • navigationController
        • viewController
      • navigationController
        • viewController
    • viewController
      • navigationController
        • viewController
      • navigationController
        • viewController

Everything work fine in simulator but when I run it on device I got this warning :

Using two-stage rotation animation. To use the smoother single-stage animation, this application must remove two-stage method implementations.

It only happen when I run it on a device in landscape mode. The first navigationController of the default view shown by the tabBarController take all the screen width (not important here but it's to explain that this warning makes my layout going crazy). In portrait nothing is traced in the console.

I read many things about this message but I can't find any solution to make it go away. I'm sure it's a story of shouldAutoRotate or something like this. I also notice that if i remove the tabBarController and simply add my first viewController to window, the message is not shown.

Very strange... please help :)

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I think you should rely on the standard UISplitViewController available under iPad. This controller is what is used under the Settings app and various other apps.

If you do not feel comfortable with such a tool, you can take a look at the APSplitViewController plugin developed by slatvick on GitHub. This could solve a lot of your problems, I hope.

Edit

Googling about this issue, I found out that this warning appears when you create a wrong hierarchy of view controllers. In this case, you are pushing two navigation controllers inside a view controller, even if a view controller is not meant to contain different navigation controller. Probably there could be a problem related on how you send up to the parent view controller methods like viewDidLoad or viewWillLoad: etc. You should try to understand if you are passing all these call correctly to the parent view controller from the inner navigation controllers.