ipad iphone repositioning uinavigation bar, moving it down to have a logo

Does anyone know if the uinvagitionbar of a uinavigationcontroller can be moved down? I'd like to move it around 200 pixels down to have a logo on top. From my research, I understand that the navigationbar should not be subclassed and there are only two properties开发者_如何学JAVA that should be changed, it's color and it's visibility. So is this impossible?

I tried moving it's frame, but to no avail.

I've seen other apps do it, but I'm thinking it might be a toolbar? Can the toolbar be repositioned?

Thanks

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Just change the size of the frame of the navigations controller's view.

CGRect frame = navigationController.view.frame;
frame.size.height -= 200.0f;
frame.origin.y += 200.0f;
navigationController.view.frame = frame;

You can then add whatever view you'd like to the view or window that contains the navigationController's view.

There a few tricky things to consider if you plan on doing this by presenting a modal view controller, however.

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You can hide the self.navigationController and put another navigation bar in the code which will move according to your frame set.

Yes the tool bar can be repositioned. Just take a control in your code and set its frame as per your requirement.

Happy Coding...