How to walk around Apple's sandboxing?

Question

I'm developing an app, which main functionality relies on editing this system file:

~/Library/Preferences/com.apple.dock.plist

It would be great to sell it through App Store. Is it possible to walk around sandboxing somehow just to read and write this file?

Answer 1

Not only is that file outside your sandbox, but its contents (e.g, the Dock preference keys) are an undocumented interface. An application that attempts to modify this file will not be approved for distribution through the App Store.