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iphone - Reverting to portrait after Done pressed on movie player?

I've got a MPMoviePlayer working. It is designed to show a postage-stamp size movie as a subview in the view. When the phone is rotated into landscape, it goes into full screen mode. And when the phone is in portrait it goes into postage-stamp portrait mode.

The only problem is when I press Done when in landscape mode, it stays in landscape, with the postage stamp sized movie, rather than kick back into portrait..

Here's some of my code:

-(void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration { 


    if (toInterfaceOrientation == UIInterfaceOrientationLandscapeRight || toInterfaceOrientation ==  UIInterfaceOrientationLandscapeLeft) {
        [moviePlayerController setFullscreen:YES animated:YES];
    } else
    {
        [moviePlayerController setFullscreen:NO animated:YES];

    }


}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{

        return interfaceOrientation == UIInterfaceOrientationLandscapeRight || interfaceOrientation == UIInterfaceOrientationPortrait || interfaceOrientation == UIInterfaceOrientationLandscapeLeft;

}

How would I get it to kick into portrait mode after pressing Done?

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@cannyboy...you just need to use below method in your APPDelegate.m if your application only works with portrait mode

- (NSUInteger) application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window {
if ([[window.rootViewController presentedViewController] isKindOfClass:[MPMoviePlayerViewController class]])
{
    //NSLog(@"in if part");
    return UIInterfaceOrientationMaskAllButUpsideDown;
}
else
{
    //NSLog(@"in else part");
    return UIInterfaceOrientationMaskPortrait;
}}

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