set background image for entire iPhone / iPad app

Question

I have a single image I want as the background for my app no matter what viewcontroller they are on - how do you accomplish this?

Answer 1

Here's how you set a background to an image:

self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"Background.png"]]; 

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Edit: To write up what Felixyz said (and thanks to Manni), do this in your delegate:

window.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"Background.png"]]; 

And in each view you want to have the image, do this:

self.view.backgroundColor = [UIColor clearColor];