MPMoviePlayerDidExitFullscreenNotification is working fine in IOS 4.0 (>=3.2). But leaves a white screen w开发者_运维问答hen loaded in IOS 3.1.3 (<3.2).
As stated in the iOS Class Reference, that notification is available in iOS 3.2 or later.
http://developer.apple.com/library/ios/#documentation/MediaPlayer/Reference/MPMoviePlayerController_Class/MPMoviePlayerController/MPMoviePlayerController.html%23//apple_ref/doc/uid/TP40006953
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