@Override
public void onDestroy() {
PreferenceGroup prefGroup = getPreferenceScreen();
for (int i = 0; i < prefGroup.getPreferenceCount(); i++) {
Preference pref = prefGroup.getPreference(i);
if (pref instanceof CheckBoxPreference) {
CheckBoxPreference checkBoxPref = (CheckBoxPreference) pref;
SettingsManager.setPreferenceBoolean(checkBoxPref.getKey(), checkBoxPref.isChecked());
}
}
super.onDestroy();
}
