DrGPIO is a really small tool to control your Raspberry PI GPIO port from your Android Device. It also works as a handy reference for the GPIO pins when used in "reference mode". Just install it and follow the instructions.
Before using this application you must install WebIOPi on your Raspberry. You will also need to have direct network access to your Raspberry PI from your Android device.
Warning! Here be dragons.... This is a "beta" version, if you find any bugs please report them.
Credits: Developed by Mario Gomez. Check http://fuenteabierta.teubi.co/ for more information and updates. This software uses WebIOPi REST Api that is developed by Eric PTAK under Apache license. Check http://trouch.com to follow his work and http://code.google.com/p/webiopi/ for more information.
Disclaimer: Raspberry PI is a trademark owned by the Raspberry Foundation, this application is not associated to the foundation by any means and the mentions of the trademark are here only for informative purposes.