Dim, almost transparent activity with actionbarsherlock
<p>I want my activity to be dimmed, almost transparent. Like the spotify app, the beneath example is from the iPhone application, but the behaviour is almost the same</p>

<p><img src="http://i.stack.imgur.com/o9XOE.jpg" alt="enter image description here"></p>

<p>Lets pretend that this is an android application, the view in front is an activity, and the view behind is also an activity. Which property do I need to set in my <code>res/styles.xml</code> in order to get this design? I've googled but I can only find java examples like this one:</p>

<pre><code>WindowManager.LayoutParams windowManager = getWindow().getAttributes();
    windowManager.dimAmount = 0.75f;
    getWindow().addFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND);
</code></pre>

<p>Thanks!</p>
