I had the same problem. Here is what I did to get it to work. It’s not elegant, but it works.
I uninstalled/deleted Eclipse (all five or so sub-packages too) through YaST2 (Install Software link).
Downloaded JEE version of Galileo from
Eclipse downloads - mirror selection
It unzips the binary, so no installation needed. (It worked fine from my /home/Documents folder
Continue with instructions at ADT Plugin for Eclipse | Android Developers