title: Adding external jar to android project
body: <p>I have the following issue:</p>
  
  <p>I have two projects: jre1.7 and android 2.1. I'd like to build first as a jar file and use it as framework in the second project. I'm using eclipse and I've done things I usually do when I add external jar. (Right Click on Project - Build Path - Add external Jars), and seems like everything's fine, there are Referenced libraries folder appears and it contains jar. </p>
  
  <p>But when I'm trying to compile Android project, it gives NoClassDefFound Error. Am I doing something wrong?</p>