@Override
 protected void onDialogClosed(boolean positiveResult) {
   if (positiveResult) {
     persistInt(mValue);
     User user = ((CompassApplication) getContext().getApplicationContext()).getUser();
     user.setDailyNotifications(mValue);
     HttpRequest.put(null, API.URL.putUserProfile(user), API.BODY.putUserProfile(user));
   } else {
     mValue = parsePreference(getKey(), getContext());
   }
 }
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    addPreferencesFromResource(R.xml.notification_preferences);

    User user = ((CompassApplication) getActivity().getApplicationContext()).getUser();
    Preference notificationNumber = findPreference(NUMBER_KEY);
    notificationNumber.setSummary(user.getDailyNotifications() + "");

    SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(getActivity());
    preferences.registerOnSharedPreferenceChangeListener(this);
  }
 @Override
 protected void showDialog(Bundle state) {
   super.showDialog(state);
   User user = ((CompassApplication) getContext().getApplicationContext()).getUser();
   mValue = user.getDailyNotifications();
   Dialog dialog = getDialog();
   NumberPicker picker = (NumberPicker) dialog.findViewById(R.id.number_picker_picker);
   picker.setOnValueChangedListener(this);
   picker.setMinValue(0);
   picker.setMaxValue(20);
   picker.setValue(mValue);
   picker.setWrapSelectorWheel(false);
 }