State management is a complex topic. If you feel that some of your questions haven't been answered, or that the approach described on these pages is not viable for your use cases, you are probably right.
Learn more from the following resources, many of which have been contributed by the Flutter community.
General overview
Things to review before selecting an approach.
- Introduction to state management, which is the beginning of this very section (for those of you who arrived directly to this Options page and missed the previous pages)
- Pragmatic State Management in Flutter, a video from Google I/O 2019
- Flutter Architecture Samples, by Brian Egan
Built-in approaches
setState
The low-level approach to use for widget-specific, ephemeral state.
- Adding interactivity to your Flutter app, a Flutter tutorial
- Basic state management in Google Flutter, by Agung Surya
ValueNotifier and InheritedNotifier
An approach using only Flutter provided APIs to update state and notify the UI of changes.
- State Management using ValueNotifier and InheritedNotifier, by Tadas Petra
InheritedWidget and InheritedModel
The low-level approach used to
communicate between ancestors and children in the widget tree.
This is what package:provider and many other approaches use under the hood.
The following instructor-led video workshop covers how to
use InheritedWidget:
Other useful docs include:
- InheritedWidget docs
- Managing Flutter Application State With InheritedWidgets, by Hans Muller
- Inheriting Widgets, by Mehmet Fidanboylu
- Widget - State - Context - InheritedWidget, by Didier Bolelens
Community-provided packages
Depending on the complexity of your app and preferences of your team, you might find adopting a state management package useful. State management packages often help reduce boilerplate code, provide specialized debugging tools, and can help enable a clearer and consistent application architecture.
The Flutter community offers a wide variety of state management packages. The best choice for your app often depends on the app's complexity, your team's preferences, and the specific problems you need to solve.
To begin exploring the available options,
check out the [#state-management][]{: target="_blank"} topic on the pub.dev site and
refine the search to find packages that match your needs.
you think would be useful to the Flutter community,
consider adding the state-management topic and
publishing the package to pub.dev.