Android – There is no Android SDK environment for Kivy set up in Ubuntu 12.04

I wrote a game for Android using Python and Kivy. I’ve downloaded android-sdk-linux and added its path to .bashrc. I also cloned the python-for-android project to create the apk package for my program. But when I write the following command as described in the Kivy manual, I get an error:

./distubute.sh -m "kivy"

error:
    Check build dependencies for Ubuntu
    Check enviromnent
    No ANDROIDSDK environment set, abort

Why?

Here is my image of ./android.sh in $android-sdk-linux/tools:

Read docs.

Hope this helps.