Android SDK is a development kit targeted at mobile devices running the Android operating system. With Android SDK, you can develop, debug, and test apps via a built-in emulator that emulates the Android OS in many platforms (Linux, Windows, etc.).
Now we are going to install Android-SDK on Ubuntu 12.04
open Terminal and type the following to add the PPA to install Android-SDK.
sudo apt-add-repository ppa:upubuntu-com/devel
sudo apt-get update
sudo apt-get install android-sdk
*Note: Android SDK will be installed in the "/usr/bin/android-sdk-linux" folder).
You can now start Android SDK Manager from the Unity dash to start adding Android platforms and other related packages.
