A Dart library for predictable state management, with testing utilities via bloc_test.
Field note
Bloc is a state management library for Dart and Flutter that implements the BLoC pattern. This page describes how to unit test a Bloc using the test and bloc_test packages.
Capabilities
Tags
Ways to use it
Dart / test
Dart / bloc_test
Dart / bloc
Dart / bloc
Dart / bloc
Dart / flutter_bloc
Product features
A more advanced state management class with event-driven state changes.
Widget to listen to bloc state changes and trigger events in other blocs.
Implements the Business Logic Component pattern for state management.
Provides blocs to the widget tree.
Provides blocTest function for testing bloc state emissions.
Provides Bloc, Cubit, and related classes for state management.
A simple state management class that extends BlocBase.
Bloc works with Equatable to optimize state comparison and reduce rebuilds.
Bloc provides patterns for handling errors while retaining previous data.
Events should be named in past tense, e.g., CounterStarted, CounterIncrementPressed.
Provides Flutter widgets for Bloc integration.
Separates presentation, business logic, and data layers.
Detailed migration guide for versions 5.0.0 to 11.0.0.
Helps make amazing, complex applications by composing them of smaller components.
Easy to understand and can be used by developers with varying skill levels.
States should be nouns, with subclasses like CounterInitial, CounterLoadSuccess, or single class with status enum.
Easily test every aspect of an application so that we can iterate with confidence.
Supports unit testing of blocs using test and bloc_test packages.