title: Android custom theme: different theme for landscape and portrait mode
body: <p>I apply a custom theme to my activity with: <code>&lt;activity android:theme="@style/MyTheme"&gt;</code>, in which I define the size of the ActionBarSherlock I use in this activity. Something like that:  </p>
  
  <pre><code>&lt;style name="MyTheme" parent="@style/Theme.Sherlock.Light.DarkActionBar"&gt;
      &lt;item name="actionBarSize"&gt;45dp&lt;/item&gt;                             
      &lt;item name="android:actionBarSize"&gt;45dp&lt;/item&gt;     
  &lt;/style&gt;
  </code></pre>
  
  <p>While this size is good for portrait mode, I find it too big in landscape mode. How can I apply a different theme in landscape mode or how could I just change the action bar size when the user uses the application in landscape orientation? Any suggestions? Thank you.</p>