I can see how someone with an Android tablet and external keyboard could want to run the Arduino IDE to develop sketches, compile and upload to an Arduino via USB. I think the first step would be to get avrdude to run on Android, but I've not seen anyone doing that yet.
Alternatively, I know that some folks run a chroot'd distro of Linux like Debian on Android devices. That might make it possible to run avrdude in a normal Linux environment and possibly the IDE too if Java is installed and X running. However, I'm not sure if access to the USB port would be a problem or not to actually connect to the Arduino for uploading.
I am most interested in being able to update the code in units useing the Arduino that are out in the feild. That would be easier than pulling the board, or lugging a Laptop to the feild.
Yeah, I can imagine many people using that capability. A friend who does electronics workshops had talked about wanting to program kits with a mobile device, too. I think the first requirement would be USB host mode which most Android tablets have and also more phones now too (like my Samsung Galaxy S2). The second requirement would be installing a Linux distro which could run avrdude. The XDA Developer forums are good place to look for Linux chroot install instructions for a specific device: http://forum.xda-developers.com/
