title: The type or namespace name 'ZXing' could not be found
body: <p>In Visual Studio 2017 I have a barebones Xamarin.Forms project that I want to use to test scanning barcodes with ZXing.  I've added FastAndroidCamera, ZXing.Net.Mobile, and ZXing.Net.Mobile.Forms Nuget packeages. Whenever I add any reference to ZXing in my Android project MainActivity class I get this error:</p>
  
  <pre><code>&gt; The type or namespace name 'ZXing' could not be found (are you missing
  &gt; a using directive or an assembly reference?)
  </code></pre>
  
  <p>I get the error even if the only reference to it is </p>
  
  <pre><code>using ZXing.Net.Mobile.Forms;
  </code></pre>
  
  <p>This will run on the emulator without error but as soon as I try to use LivePlayer to run in on my phone or tablet It fails and the above message  is displayed in the VS error list.</p>
  
  <p>I've tried the Getting started info on <a href="https://components.xamarin.com/gettingstarted/zxing.net.mobile.forms" rel="nofollow noreferrer">https://components.xamarin.com/gettingstarted/zxing.net.mobile.forms</a> without any success.  I've also tried to use the official ZXing sample solutions on github but there are so many errors when I try to load the solution in VS2017 that it hasn't helped.</p>
  
  <p>Is there something You need to do besides Adding the Nuget package to the project refences and adding a "using" statement?</p>