title: Set activity background in theme using a style?
body: <p>I want to use a background drawable for all my activities. How can I do this with a style?</p>
  
  <pre><code>// styles.xml
  &lt;style name="MyTheme" parent="Theme.Sherlock.Light.DarkActionBar.ForceOverflow"&gt;
      &lt;item name="android:background"&gt;@drawable/my_background&lt;/item&gt;  
  &lt;/style&gt;
  </code></pre>
  
  <p>that sets the background for all widgets it seems. I just want it to work for activities.</p>
  
  <p>Thanks</p>