title: why i can add id to android studio 3.0 Although i add id to activity_main.xml
body: <p>I'm new to Android Developing and I Download android studio 3.0  because my computer has amd processor. I found a lot of problem which one of them I can't use the android virtual device but these not problem .</p>
  
  <p>I cant add id to main activity although I'm add the id in  <code>activity_main.xml</code> </p>
  
  <p><strong>Images of problem</strong></p>
  
  <ol>
  <li><a href="https://www.mediafire.com/view/a0pz08jc5ac95qa/das.PNG" rel="nofollow noreferrer">https://www.mediafire.com/view/a0pz08jc5ac95qa/das.PNG</a></li>
  <li><a href="https://www.mediafire.com/file/8cacjf5xxs2azvv/sad.PNG" rel="nofollow noreferrer">https://www.mediafire.com/file/8cacjf5xxs2azvv/sad.PNG</a></li>
  </ol>