title: Android map doesn't show
body: <p>I'm trying to make a sample map app, but the map doesn't appear on screen like so:</p>
  
  <p><img src="https://I.stack.imgur.com/mBcai.png" alt="Map on my screen"></p>
  
  <p>I'm following this <a href="http://www.vogella.com/articles/AndroidLocationAPI/article.html" rel="nofollow noreferrer">example</a> but I don't understand what is wrong so my map to look like this?</p>
  
  <p>I've added the API key like this:</p>
  
  <pre><code>keytool -list -alias androiddebugkey -keystore debug.keystore \
          -storepass android -keypass android
  </code></pre>
  
  <p>All GPS and Internet permissions are added, and the device is connected to the internet.</p>