I am trying to follow this tutorial http://wiki.ros.org/android/Tutorials/hydro/Installation%20-%20Ros%20Development%20Environment

and I can't figure out how to fix this error:

• What went wrong: A problem occurred evaluating root project 'android_core'. > Plugin with id 'catkin' not found.

I am running ROS Hydro and Ubuntu 12.04. I am new to android development so I have no idea where to start. Can't find anyone with the same issue.