This worked for me and might not work for your.
Try it at your own risk!
$ wget -qO - 'http://archive.neon.kde.org/public.key' | sudo apt-key add -
$ sudo apt-add-repository http://archive.neon.kde.org/user
$ sudo apt-get update
$ sudo apt-get install neon-desktop
| package com.example | |
| import android.util.Log; | |
| import android.view.KeyEvent; | |
| /** | |
| * Created by mat on 10/04/14. | |
| * | |
| * Allows a secret combination of volume up / volume down presses to trigger something. | |
| * I.E. reveal a hided debug menu when a combination is entered |
| # Function to calculate the WPS checksum of a 7 digit number | |
| def wps_checksum(pin): | |
| accum = 0 | |
| while pin>0: | |
| accum += 3 * (pin % 10); | |
| pin /= 10; | |
| accum += pin % 10; | |
| pin /= 10; | |
| return (10 - accum % 10) % 10 |