title: Can't find R. layout - app name. Only android layout
body: <p>For some reason, when i started up eclipse today, it couldn't find my main XML in my</p>
  
  <pre><code>setContentView(R.layout.main);
  </code></pre>
  
  <p>When i write R. it can only find "Layout - Android.R" - and not my "Layout - com.your.app"</p>
  
  <p>Anyone who knows how to solve this problem?</p>
  
  <p><strong>I just realised my Java file in the /gen folder is missing, how do i retrieve it again?</strong></p>
  
  <p><strong>Cleaning project doesn't work</strong></p>