Flutter ha diversi approcci di gestione dello stato — da quelli built-in (setState, InheritedWidget) alle librerie popolari (Provider, Riverpod, Bloc, GetX). Comprendere le opzioni principali, le loro filosofie e i compromessi aiuta a scegliere l'approccio giusto per un'app.
Approcci built-in
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 — semplice e consigliato
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
