loadThemeMode method

Implementation

void loadThemeMode() async {
  SharedPreferences prefs = await SharedPreferences.getInstance();
  int? themeTypeIndex = prefs.getInt('themeType');
  if (themeTypeIndex == null) {
    _themeMode = ThemeMode.system;
    _themeType = ThemeType.system;
  } else {
    _themeType = ThemeType.values[themeTypeIndex];
    _themeMode = _themeTypeToThemeMode(_themeType);
  }
  notifyListeners();
}