import 'package:flutter/material.dart';
import 'package:provider/provider.dart';

// Define the model
class CounterModel extends ChangeNotifier {
  int _count = 0;
  int get count => _count;

  void increment() {
    _count++;
    notifyListeners(); // Notify listeners about state change
  }
}

// Widget consuming the state
class CounterWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final counter = Provider.of<CounterModel>(context);

    return Text('Count: ${counter.count}');
  }
}

// Main application widget
class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return ChangeNotifierProvider(
      create: (context) => CounterModel(),
      child: MaterialApp(
        home: Scaffold(
          appBar: AppBar(title: Text('Provider Example')),
          body: Center(child: CounterWidget()),
          floatingActionButton: FloatingActionButton(
            onPressed: () {
      Provider.of<CounterModel>(context, listen: false).increment();
            },
            child: Icon(Icons.add),
          ),
        ),
      ),
    );
  }
}

void main() {
  runApp(MyApp());
}

import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';

// Events that trigger state changes
enum CounterEvent { increment }

// Business logic component
class CounterBloc extends Bloc<CounterEvent, int> {
  CounterBloc() : super(0);

  @override
  Stream<int> mapEventToState(CounterEvent event) async* {
    switch (event) {
      case CounterEvent.increment:
        yield state + 1;
        break;
    }
  }
}

// Widget consuming the state
class CounterWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final counterBloc = BlocProvider.of<CounterBloc>(context);

    return BlocBuilder<CounterBloc, int>(
      builder: (context, count) {
        return Text('Count: $count');
      },
    );
  }
}

// Main application widget
void main() {
  runApp(
    BlocProvider(
      create: (context) => CounterBloc(),
      child: MaterialApp(
        home: Scaffold(
          appBar: AppBar(title: Text('Bloc Example')),
          body: Center(child: CounterWidget()),
          floatingActionButton: FloatingActionButton(
            onPressed: () {
  BlocProvider.of<CounterBloc>(context).add(CounterEvent.increment);
            },
            child: Icon(Icons.add),
          ),
        ),
      ),
    ),
  );
}