title: Reload Preferences in PreferenceActivity on Resume
body: <p>In my app, some settings can possibly be changed while the <code>PreferenceActivity</code> is not open, and an issue I'm running into is that <code>addPreferencesFromResource</code> is called in <code>onCreate</code>, so say, I open the <code>PreferenceActivity</code>, then go to another screen from there, then do something that changes the settings, then hit the back key to go back to the <code>PreferenceActivity</code>, then certain settings have not changed on the layout.</p>
  
  <p>So, how could I re-load all the <code>Preferences</code> every time <code>onResume</code> (or <code>onStart()</code>) is called without duplicating the layout?</p>