title: Processing for Android, use of libraries
body: <p>I have a Processing sketch that works fine on my computer. </p>
  
  <p>I'm now trying to get it running on my Android tablet using Processing Android mode. But I'm getting a lot of compiler errors saying "cannot find symbol". </p>
  
  <p>I'm using some Processing libraries I've created using <a href="https://github.com/processing/processing-library-template" rel="noreferrer">https://github.com/processing/processing-library-template</a> .</p>
  
  <p>These libraries don't actually access system resources or call the Processing library themselves. Or any other external Java except Java.util. They're just manipulating data-structures.</p>
  
  <p>However it seems Android mode has a problem with them.</p>
  
  <p>Googling around it seems that a lot of Processing libraries don't work with Android Mode, but I can't find anything explicit : should I simply assume that external libraries can't work at all with Android mode? Or are there specific things that won't work? Or should I be looking for a specific bug somewhere in my code?</p>
  
  <p>Update : Further details. I believe Processing Android mode targets Android 2.3.3. I'm using Processing 2.21. The libraries I'm talking about are my own. </p>