title: R.java not being generated
body: <p>I know this is very widespread problem , but I didn't find solution to my particular case after searching the web for almost one day. I am using Ubuntu 14.04. I have just installed eclipse , ADT and SDK. So I have tried followings but still I get the same error.</p>
  
  <ul>
  <li>Install all possible SDK build tools</li>
  <li>Delete gen folder and clean/build the project</li>
  <li>Fix all the errors in layout files</li>
  <li>Make sure that the path to sdk is correct</li>
  <li>Check if appcompat_v7 is added as a library or not</li>
  </ul>
  
  <p>So what can you advise me to do besides these?</p>