flutter-state-management

Choose and correctly use Flutter state management with current (2026) APIs - Riverpod 3 (Notifier/AsyncNotifier, mutations, Ref.mounted), BLoC/Cubit 9 (flutter_bloc), Flutter's official MVVM with ChangeNotifier + Commands, and built-ins (setState, ValueNotifier, ListenableBuilder); plus why to avoid GetX. Use this whenever the user writes or reviews a Cubit, Bloc, provider, Notifier, ViewModel or StatefulWidget, asks "BLoC or Riverpod?", handles loading/error states or one-off effects (snackbar, navigation), uses BuildContext after await, or hits rebuild/async bugs in Flutter, even if they don't say "state management".