changeUI method

bool changeUI(String? ui)

Explicitly change to a particular interface.

Implementation

bool changeUI(String? ui) {
  // Allow to chang the interface in the first place.
  bool change = _allowChangeUI;

  if (change) {
    // The parameter may be null
    change = ui != null && ui.isNotEmpty;
  }

  if (change) {
    ui = ui!.trim();
    // Must be a recognized interface design
    change = ui == 'Material' || ui == 'Cupertino';
  }

  if (change) {
    //
    if (UniversalPlatform.isMobile) {
      if (ui == 'Material') {
        _useMaterial = true;
        _useCupertino = false;
        _switchUI = !UniversalPlatform.isAndroid;
      } else {
        _useMaterial = false;
        _useCupertino = true;
        _switchUI = UniversalPlatform.isAndroid;
      }
    } else {
      if (ui == 'Material') {
        _useMaterial = true;
        _useCupertino = false;
        _switchUI = false;
      } else {
        _useMaterial = false;
        _useCupertino = true;
        _switchUI = true;
      }
    }
    Prefs.setBool('switchUI', _switchUI);
    // Reload the whole App so it works in testing
    hotReload(); // because of WidgetsApp(key: GlobalObjectKey(this),
  }
  return change;
}