MPMoviePlayerController刚进入ViewController就横屏满屏幕播放

NSURL *url = [[NSBundle mainBundle] URLForResource:@"Robot" withExtension:@"m4v"];
moviePlayer = [[MPMoviePlayerController alloc] initWithContentURL:url];
moviePlayer.controlStyle = MPMovieControlStyleFullscreen; moviePlayer.view.transform = CGAffineTransformConcat(moviePlayer.view.transform, CGAffineTransformMakeRotation(M_PI_2)); UIWindow *backgroundWindow = [[UIApplication sharedApplication] keyWindow]; [moviePlayer.view setFrame:backgroundWindow.frame]; [backgroundWindow addSubview:moviePlayer.view]; [moviePlayer play];