title: Red files in Android Studio Project
body: <p>I have a android studio project and some of the files have turned red.  </p>
  
  <p>I have tried the anwsers from this question '<a href="https://stackoverflow.com/questions/33816810/error-with-importing-android-project-android-studio/33816992#33816992">Error with importing android project *Android Studio*</a>'</p>
  
  <p>but none works. </p>
  
  <p>So i thought about about adding some dependencies. </p>
  
  <p>So i added this <code>compile fileTree9dir: 'activity', include ['*java'])</code></p>
  
  <p>Then the files will turn blue, like they should. But only for 5 seconds and then they turn back to red. </p>