title: "Couldn't resolve resource" in Android Studio's Preview
body: <p>After adding new items in <code>strings.xml</code>, quite often they don't start working immediately in Android Studio's Preview. </p>
  
  <blockquote>
    <p>Couldn't resolve resource @string/faq_customer_service</p>
  </blockquote>
  
  <p>Preview looks like this: </p>
  
  <p><img src="https://i.stack.imgur.com/f0tlF.png" alt="enter image description here"></p>
  
  <p>I've obviously tried to re-build the project, and even run <code>gradle clean assembleDebug</code>, but it doesn't seem to help. On emulator &amp; real device the newly-added string resources do work.</p>
  
  <p>Any trick to force Android Studio to reload the resources so that the correct texts show up in Preview? </p>