title: Can't get Visual Studio to target the correct Android version
body: <p>I have a problem getting Xamarin.Android to target the newest version of Android.</p>
  
  <p>The problem arised when I tried installing the Xamarin.GooglePlayServices.Maps NuGet package, that required me to run at least Android 8.</p>
  
  <p>From my Android SDK manager, I can see that Android 8 and 8.1 is the only SDK platforms installed:</p>
  
  <p><a href="https://i.stack.imgur.com/GEHzj.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/GEHzj.jpg" alt="enter image description here"></a></p>
  
  <p>However, when I start a new project in Visual Studio 2017, and go into the project properties, and extend the Compile using Android version dropdown, it's populated like this:</p>
  
  <p><a href="https://i.stack.imgur.com/9n3DN.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9n3DN.jpg" alt="enter image description here"></a></p>
  
  <p>So here I can choose only 7.1 (that is marked as latest platform), and 8.0 and 8.1 is marked with (Requires installation). Android 7.1 SDK that VS uses is not even installed on my machine.</p>
  
  <p>So the questions is: What do I have to do to select Android 8.1 as the Target Framework inside Visual Studio?</p>