Flutter has several state management approaches — from built-in (setState, InheritedWidget) to popular libraries (Provider, Riverpod, Bloc, GetX). Understanding the main options, their philosophies, and trade-offs helps choose the right approach for an app.
Built-in approaches
setState → local state in a StatefulWidget (simple; doesn't scale to shared state)
InheritedWidget → built-in way to share state down the tree (the foundation many
libraries build on; verbose to use directly)
Provider — simple and recommended
PROVIDER → official-recommended, built on InheritedWidget; simple, widely used:
→ provide state at a point in the tree; descendants "watch"/consume it
→ ChangeNotifier holds state and notifies listeners → UI rebuilds on change
→ good for many apps; gentle learning curve
