title: Gradle doesnt build and cant see the activity_main.xml
body: <p>I have been working on a project for college but I can not do on my own pc first was the sdk now the gradel doesn't build...Any help?</p>
  <p>I already tried to clear the cache and nothing workked... can it be something with the sdk? I was not avalable to install the sdk beacuse it said it was already installed so I copy the sdk from another pc
  <a href="https://i.stack.imgur.com/xmOFJ.png" rel="nofollow noreferrer">here is the image </a></p>