How do I disable the navigation bar shadow in iOS

Question

It seems in iOS 6, a drop shadow is automatically added to the navigation bar even when you set a custom background image. I'm pretty sure this wasn't the case with iOS 5 as when I test the same code in the iOS 5 and 6 sim, the shadow appears in iOS 6 but not 5.

Does anyone know anything about this? Or how to enable/disable it?

Answer 1

I cannot comment so I'll add my information here.

Perhaps the above suggestions worked in the beta, but it does not seem to be the case now.

self.navigationController.navigationBar.shadowImage = [[UIImage alloc] init];

The above does not work, neither do any of the other similar answers above. I have tried them all.

Clipping to bounds does work but doesn't give the result I want as I'd like other views to hang outside the nav bar.