title: AndroidStudio: All classes bugged
body: <p><a href="https://i.stack.imgur.com/afuS6.png" rel="nofollow noreferrer">screenshot of Manifest file</a><br>
  <a href="https://i.stack.imgur.com/r1gOD.png" rel="nofollow noreferrer">screenshot of Android-studio with first line</a><br></p>
  
  <p>As you see in the image, after my PC shutdown unexpectedly, all classes (include String) and methods was bugged. <br><br>I tried to uninstall and re-install the Android-studio but still not working (I didn't remove the sdk). <br><br>The Android Project can run on another PC and build an apk.<br><br>
  Although I can clean all the Android stuff inside my PC (include sdk) and hope this can make the Android-studio will run properly again. I still want to know how to fix it in case of happening again.
  <br><br><br><br>
  1.) Project was clean and rebuild serval times.<br>
  2.) I tried start a blank new project on same PC but it had same issue
  3.) reinstall the everything (studio and sdk) is not working too
  <br><br><br><br>======================= Solution ==========================================
  <br><br><br><br>
  I found the project can build apk in another PC. Then I try to build apk on my bugged Android-Studio and it work fine.
  <br><br>
  So I rename the Android studio project folder and move <strong>[.AndroidStudio2.2 , .Gradle , .android]</strong>  to other directory after re-install the Studio again... IT WORK !!!!!!! <br>
  --fin--</p>