title: The project is missing Android SDKs required for building
body: <p>I'm attempting to build my first F# Android project in Visual Studio 2017 <em>(Community Edition)</em>.</p>
  
  <p>Immediately after creating a new project by using the F# - Android - Blank App template, the error window in Visual Studio displays the following message:</p>
  
  <blockquote>
    <p>The project Foo is missing Android SDKs required for building. Double-click on this message and follow the prompts to install them.</p>
  </blockquote>
  
  <p>No amount of double-clicking on the message causes prompts to appear.</p>
  
  <p>I can't find an obvious place to download the Android SDK from:</p>
  
  <p>The SDK manager that I remember from a while ago seems to have disappeared from the Android developer website.</p>
  
  <p>I've installed Android Studio, which seemed to download some Android SDKs, but Visual Studio still can't seem to find whatever it's looking for.</p>