Can't add project as library to my project
<p>I'm trying to use ABS library in my project. I added library project to my workspace, checked this state ("Is Library" is true in project's settins), added this project to my one "Java Build Path" -> "Projects". But I can't mark this project as library ("Android"->"Libraries" in properties). I had added that, but when I opened it again, I saw that project hadn't been added. How can I fix it?  </p>
