问iPad 3.2 & [MPMoviePlayerController setFullScreen:]未出现

EN

- (void)registerForMovieNotifications {
    //for 3.2 devices and above
    if ([moviePlayer respondsToSelector:@selector(loadState)]) {
        LOG(@"moviePlayer responds to loadState, this is a 3.2+ device");

        //register the notification that the movie is ready to play
        [[NSNotificationCenter defaultCenter] addObserver:self
                                                 selector:@selector(moviePlayerLoadStateChanged:)
                                                     name:MPMoviePlayerLoadStateDidChangeNotification
                                                   object:nil];

        [[NSNotificationCenter defaultCenter] addObserver:self
                                                 selector:@selector(didExitFullScreen:) 
                                                     name:MPMoviePlayerDidExitFullscreenNotification
                                                   object:nil];

        LOG(@"preparing moviePlayer...");
        [moviePlayer prepareToPlay];



       } else {
            //for pre-3.2 devices
            LOG(@"This is a 3.1.x device");

            //register the notification that the movie is ready to play
            [[NSNotificationCenter defaultCenter] addObserver:self
                                                     selector:@selector(moviePreloadDidFinish:)
                                                         name:MPMoviePlayerContentPreloadDidFinishNotification
                                                       object:nil];
        }

        //handle when the movie finished
        [[NSNotificationCenter defaultCenter] addObserver:self
                                                 selector:@selector(moviePlayBackDidFinish:)
                                                     name:MPMoviePlayerPlaybackDidFinishNotification
                                                   object:nil];
    }
    - (void)readyPlayer {
        if (!moviePlayer) {
            moviePlayer = [[MPMoviePlayerController alloc] initWithContentURL:movieURL];
        } else {
            [moviePlayer setContentURL:movieURL];
        }

        [self registerForMovieNotifications];
    }

- (void) moviePlayerLoadStateChanged:(NSNotification*)notification {
    LOG(@"3.2/4.x - moviePlayerLoadStateChanged:");
    //unless state is unknown, start playback
    if ([moviePlayer loadState] != MPMovieLoadStateUnknown) {
        //remove observer
        [[NSNotificationCenter defaultCenter] removeObserver:self
                                                        name:MPMoviePlayerLoadStateDidChangeNotification
                                                      object:nil];

        //set the frame of the movie player to match
        self.view.autoresizesSubviews = YES;

        [[moviePlayer view] setFrame:self.view.bounds];
        [[moviePlayer view] setAutoresizingMask:UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight];
        [[moviePlayer view] setAutoresizesSubviews:YES];

        //add movie player as a subview
        [self.view addSubview:moviePlayer.view];
        [moviePlayer setFullscreen:YES];

        //play the movie
        [moviePlayer play];

    }
}