@Override
public void onWindowFocusChanged(boolean hasFocus) {
if (!hasFocus) return;
mPreferencesList = new ArrayList<String>();
mPreferenceScreen = getPreferenceScreen();
initGroups(mPreferenceScreen);
initValues();
}
private void initGroups(PreferenceGroup preferences) {
final int count = preferences.getPreferenceCount();
for (int i = 0; i < count; i++) {
Preference pref = preferences.getPreference(i);
if (pref instanceof PreferenceGroup) initGroups((PreferenceGroup) pref);
else {
pref.setOnPreferenceChangeListener(this);
// Some Preference UI elements are not actually preferences,
// but they require a key to work correctly. For example,
// "Clear private data" requires a key for its state to be
// saved when the orientation changes. It uses the
// "android.not_a_preference.privacy.clear" key - which doesn't
// exist in Gecko - to satisfy this requirement.
String key = pref.getKey();
if (key != null && !key.startsWith(NON_PREF_PREFIX)) {
mPreferencesList.add(pref.getKey());
}
}
}
}