title: android-studio can't find an aidl interface for use in class
body: <p>I have an interface defined in the aidl but I can't extend it or find it any way. The ide just tells me: <strong>Can not resolve symbol 'KeyEventListener'</strong>
  Any idea how to fix this?</p>
  
  <p>Additional infos:</p>
  
  <ul>
  <li>KeyEventListener is the name of the interface defined in KeyEventListener.aidl</li>
  <li>KeyEventListenerImpl is the class which extends the interface Stub </li>
  <li>KeyEventListener just contains one method named 'void doIt();' and is well formatted;</li>
  </ul>
  
  <p>I know android-studio is some thing like a pre-alfa but like it very much and would be very happy if some one could halp me out on this!</p>
  
  <p><img src="https://i.stack.imgur.com/pcFGj.png" alt="enter image description here"></p>