That's odd... What version are you using?
My bluetooth keyboard has worked on android since 0.60, though there was an odd bug where pressing a physical key on the tablet (like the back arrow) would cause the keyboard to stop sending input. You would have to tap back within the window frame (on the code editor or command line, for example) for the keyboard input to start working again.
I'm on 0.70.6 pro now, and just tested on my tablet. Still works, and that bug seems fixed.