title: Error API key not found when i am trying to add google map to Xamarin
body: <p>I'm trying to add Google Maps in Xamarin Forms app but when I run it
  this error occurred:</p>
  
  <blockquote>
    <p>Java.Lang.RuntimeException<br>
     Message=API key not found.  Check that  is in the  element of AndroidManifest.xml</p>
  </blockquote>
  
  <p></p>
  
  <blockquote>
    <p>Java.Lang.RuntimeException: 'API key not found.  Check that  is in the  element of AndroidManifest.xml'</p>
  </blockquote>
  
  <p><a href="https://i.stack.imgur.com/kBvgX.png" rel="nofollow noreferrer">Erorr message</a></p>
  
  <p>Is there any way to know this API is active? </p>