title: How to switch to design editing in android studio for designing layout of the activity
body: <p>I can't switch to design editing in android studios when i want to edit the xml file of the layout file. There are no button for changing to text or design on the bottom of the codes. <a href="https://i.stack.imgur.com/vu6fB.png" rel="nofollow noreferrer">Screenshot of android studios</a></p>
  
  <p>Can someone help me fix the problem?</p>