This Easy and Step-by-Step Tutorial Show How-to Jump Start in Android Development with Linux Android ADT Bundle Ubuntu.
All the Steps Involved in Getting-Started with a Productive Android ADT Bundle Ubuntu Environment are Clearly Described.
First of All the Installation of the Latest Official Oracle Java JDK that is Strongly Recommended for Android ADT Bundle Ubuntu Development.
The Instructions, Commands and Descriptions for Android ADT Bundle Ubuntu Guide are Expressly Reduced so to Give Focus only the Essentials.

-
Download Android 4.2 SDK ADT Bundle Ready to Develop:
ADT Bundle r21 Linux x86/x86_64.zip - Double-Click on Archive and Extract into /tmp
- Open Terminal Window
- Check if Java JDK7 is Installed
java -version
- Relocate Android Developer Tools
su
mv /tmp/adt-bundle-linux* /opt
Make a Symlink to Distingue ADT Eclipse Bundle from Ordinary Eclipse:
ln -s /opt/adt-bundle-linux*/eclipse/eclipse /opt/adt-bundle-linux*/eclipse/adt
- Insert Android Developer Tools into User PATH
nano ~/.bashrc
export PATH=/opt/tmp/adt-bundle-linux*/eclipse:$PATH
Ctr+x to Save and Exit :)
Load New Settings
source ~/.bashrc
- Launching ADT Eclipse Bundle
From Terminal with:
adt
Create a Custom App Launcher for Easy&Quick Launching:
Quick Launcher for Ubuntu-Unity -
Getting-Started Coding Hello-World ADT App on Eclipse ADT:
Android ADT App Hello-World