When I try to use libraries they all seem empty to me (when I try to import them I can only see 'empty' packages). I tried both: drag-drop libraries to \libs and importing them. I don't know what is causing this problem...
I'm trying to import androidplot libraries, I'm not finding this particular issue on their boards so maybe I'm doing something wrong?!
EDIT
You're importing the androidplot sources jar which wont work because its full of .java files instead of the expected .class files. Use the library jar instead.