title: Xamarin.Android, Visual Studio - Designer doesn't work with v7 AppCompat library
body: <p>I want to create an app with Material Design using Xamarin and Visual Studio. I want to achieve this using the v7 AppCompat library, so my app runs well on older devices.</p>
  
  <p>I have an activity with a toolbar and a button.</p>
  
  <p>But in the Visual Studio Designer the layout isn't as it's supposed to be(No Material theme and no Toolbar):</p>
  
  <p><a href="https://i.stack.imgur.com/dwqPq.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/dwqPq.png" alt="Visual Studio Designer"></a></p>
  
  <p>But the strange thing is that it runs properly on my phone(without any changes made):
  <a href="https://i.stack.imgur.com/NcqgZ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/NcqgZ.png" alt="My phone"></a></p>
  
  <p>How can I fix this?</p>