Flutter Bloc/Cubit State Management

Use this skill when building Flutter state management with bloc and flutter_bloc.

Core Rule

• Use Cubit for simple, direct state updates.
• Use Bloc for event-driven flows, transitions, and replayable business logic.
• Use bloc in Dart-only projects.
• Use flutter_bloc in Flutter apps when you need widgets like BlocProvider, BlocBuilder, or BlocListener.
• If you install flutter_bloc, you do not need to add bloc separately in a Flutter app because flutter_bloc depends on it.

Decision Guide

Choose Cubit when:

• state changes are simple method calls
• you do not need events
• the feature is local and low complexity
• examples include counters, toggles, filters, form flags, and theme mode