Joystick control of drones

Hi. I am not sure under which forum this should appear, but having spoken to Andy Sayle at the Clubnight yesterday, he will see this advise as he moderates this one.
I have a Parrot AR2 drone and I am finding it diffcult to control using a smart phone or tablet. There is no tactile feedback from a smooth screen and I have to keep looking down to see where my thumbs are! I know enthusiasts have experimented with linking joystick controllers (such as xBox) to android phones and tablets and I am hoping someone in the RDMFC will have the answers......
David

Andy kindly gave me some info to look at but, as a non-tech newby to drone flying it all seemed far too complicated (and terrifying!).
So I thought up a practical solution to getting my thumbs on the right places on the screen without looking down. The idea was to stick a ring of decorators tape (the not very sticky stuff) around the buttons - clear of the 'operating zones'. Then I would be able to feel where the buttons were and move the simulated joysticks. I therefore needed to measure the buttons.
So I switched everything on in the house, making sure I did not touch the "TAKE OFF" button! As I measured the buttons I noticed that they moved to wherever I touched the screen, within reason. It was obvious in laboratory conditions, but had not been obvious with a drone swaying about in the garden! The problem was solved - there was no problem. The buttons followed my thumbs not vice versa. Who needs joysticks?
Actually, joysticks would be better, but the setting up too complicated for me.