Get launch orientation of iPad app

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This is expected behavior. Quoth the UIViewController documentation:

Note: At launch time, applications should always set up their interface in a portrait orientation. After the application:didFinishLaunchingWithOptions: method returns, the application uses the view controller rotation mechanism described above to rotate the views to the appropriate orientation prior to showing the window.

In other words, as far as the device is concerned the orientation is portrait while the application is launching. At some point after application:didFinishLaunchingWithOptions: it will detect the different orientation and call your shouldAutorotateToInterfaceOrientation: method and then your other view rotation methods, which you should handle as normal.

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