A simple state management only using ValueNotifier (https://api.flutter.dev/flutter/foundation/ValueNotifier-class.html) and ValueListenableBuilder (https://api.flutter.dev/flutter/widgets/ValueListenableBuilder-class.html).
A simple state management only using ValueNotifier (https://api.flutter.dev/flutter/foundation/ValueNotifier-class.html) and ValueListenableBuilder (https://api.flutter.dev/flutter/widgets/ValueListenableBuilder-class.html).