What is Provider in Flutter?

 Provider is a wrapper around InheritedWidget that helps manage and share app state efficiently.

Example:

class Counter with ChangeNotifier {
  int count = 0;
  void increment() {
    count++;
    notifyListeners(); // UI refreshes
  }
}

In main:

ChangeNotifierProvider(
  create: (_) => Counter(),
  child: MyApp(),
);

Use in UI:

Consumer<Counter>(
  builder: (context, counter, child) =>
      Text('${counter.count}'),
);

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