I am using the google drive api for android in eclipse, how do I link the documentation so that when I hover over something, I can view the java doc for it.
Assuming you are using the Android Development Tools (ADT), see https://stackoverflow.com/a/11579339/1369991 on how to do it.
Note that the contents of the libs folder will be bundled with your application. So you really should put the source and Javadoc JARs in another folder or even keep them outside of your workspace. Everything described in that answer also works with external JARs — on Windows you just have to use
/ instead of the usual
\ as path separator.