Resetting preferences when using PreferenceScreen
<p>I am loading a PreferenceScreen from an xml file to use as the screen to configure a new event so I'm attempting to clear and reset the values of the SharedPreference this activity is using. The problem I'm encountering is that when attempting to move to using a named preference manager, it seems the preference gets cleared but when I select an EditTextPreference element, the old data is still the default entered text on the popup.</p>

<p>In my onCreate method I'm attempting to initialize the preferences, clear them, then set to default values. My understanding from the dev resources were that there's no way to clear/reset in one step..</p>

<pre><code>private static final String PREFNAME = "newmeetingactivity.preferences";

//load preferences and set name
addPreferencesFromResource(R.layout.newmeeting_preferences);
getPreferenceManager().setSharedPreferencesName(PREFNAME);
getPreferenceManager().setSharedPreferencesMode(MODE_PRIVATE);

//Clear the preferences 
_sharedPreferences = getPreferenceManager().getSharedPreferences();
SharedPreferences.Editor ed = _sharedPreferences.edit();
ed.clear();
ed.commit();

//Load default preferences from file again
PreferenceManager.setDefaultValues(this, _sharedPreferences.toString() , MODE_PRIVATE, R.layout.newmeeting_preferences, true);
</code></pre>

<p>Edit: To try to better explain what I'm attempting to do (in case my approach is way off): I need to clear shared preferences used on a given activity while not interfering with the settings from other activities (as they should persist indefinitely).</p>
