title: Android studio canary doesn't preview jetpack compose
body: <p>so after jetpack compose beta was released, I updated my Android Studio Canary to the latest version, but I can't preview my app, even when I annotate my code with @Preview, there is no button called show preview or show code, they just disappeared.
  <a href="https://i.stack.imgur.com/zNPSl.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/zNPSl.png" alt="enter image description here" /></a></p>