PreferenceActivity lifecycle
<p>I read <a href="http://developer.android.com/reference/android/app/Activity.html" rel="nofollow">http://developer.android.com/reference/android/app/Activity.html</a>
but I have a question about PreferenceActivity lifecycle:</p>

<p>Does a PreferenceActivity get onStop() or onDestory() call?</p>

<p>I understand it gets onStop() called when user clicks 'Back', but what about onDestory()?
when does onDesgtory() for PreferenceActivity get called?</p>

<p>Thank you.</p>
