Be notified when an Activity's size is going to change, and when it has changed
<p>Can I be notified of the following events for an Activity:</p>

<ul>
<li>screenSizeWillChange</li>
<li>screenSizeDidChange</li>
</ul>

<p>I realize that I can probably override the main View's <code>onSizeChanged()</code> and be notified when the View has changed, but how can I be notified when it's about to change?</p>
