Can I programmatically choose the Android layout folder?

Question

I'm building an Android app that resizes based on the screen size using different layout folders (i.e. large, xlarge, etc.).

The only problem is that I want to provide a way for users to switch between the small and large screen layouts, in case they have a pre-honeycomb tablet that doesn't recognize the xlarge tag, or the device is closer to phone size but still big enough that the user wants to use the tablet layouts.

Is there a way that I can create a button to switch layout folders? I still want to use the automatic folder selection based on screen size, I just ALSO want to be able to force the app to use one folder or the other.

Is that possible?