title: Admob ad not resizing correctly upon screen orientation [Includes Pictures]
body: <p>I am using Admob for ads in my app and I ran into a problem. Whenever I turn the screen to landscape mode, the ad shows up but it's the same size as it was in portrait mode. This problem occured after I added this xml declaration in my manifest to my main activity that was necessary to keep the main parts of the app functioning smoothly:</p>
  
  <pre><code>android:configChanges="orientation|keyboardHidden|screenSize"
  </code></pre>
  
  <p>I am using smart banner in my ad for the size:</p>
  
  <pre><code>ads:adSize="SMART_BANNER"
  </code></pre>
  
  <p>I have attached pictures of this problem:</p>
  
  <p><img src="https://i.stack.imgur.com/EoOel.png" alt="This is what it looks like in portrait mode. It runs perfectly">
  <img src="https://i.stack.imgur.com/S6UY5.png" alt="This is what it looks like after I turn my phone sideways. The ad still shows but it doesn&#39;t resize to the fill width"></p>
  
  <p>What do I have to do to get the ad to resize properly in landscape mode without deleting  </p>
  
  <pre><code>android:configChanges="orientation|keyboardHidden|screenSize"  
  </code></pre>
  
  <p>in the manifest for my main activity?</p>