Flutter ina njia kadhaa za usimamizi wa state — kutoka za ndani (setState, InheritedWidget) hadi maktaba maarufu (Provider, Riverpod, Bloc, GetX). Kuelewa chaguo kuu, falsafa zao, na faida-na-hasara husaidia kuchagua njia sahihi kwa programu.
Njia za ndani
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 — rahisi na inayopendekezwa
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
