Here's how I installed android studio on xubuntu.
1. Install JDK:
Go through following commands to install jdk
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java7-installer
sudo apt-get install oracle-java7-set-default
If you want to install other version of jdk than replace your version number with 7 in last two commands.
2. Download the latest android studio from official site: https://developer.android.com/studio/index.html
It is better to use latest version of android studio because I tried to install version 1.5.1 and it was not working. Then I installed version 2.1.1 and it run perfectly.
Extract downloaded android studio file in whichever folder you want. Now go to extracted android studio-->bin directory and open terminal here. Now run following:
./studio.sh
And that's it. If you are facing any problem than comment below.