使用同一区块/Cubit的多个BlocBuilder，每个用于不同的事件

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

class CounterCubit extends Cubit<int> {
  CounterCubit() : super(0);

  void increment() {
    state++;
  }

  void decrement() {
    state--;
  }
}

final counterCubitProvider = Provider((ref) => CounterCubit());

void main() {
  runApp(ProviderScope(child: MyApp()));
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('Counter Example')),
        body: CounterPage(),
      ),
    );
  }
}

class CounterPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Column(
      mainAxisAlignment: MainAxisAlignment.center,
      children: [
        BlocBuilder<CounterCubit, int>(
          builder: (context, count) {
            return Text('Increment Count: $count');
          },
        ),
        BlocBuilder<CounterCubit, int>(
          builder: (context, count) {
            return Text('Decrement Count: $count');
          },
        ),
        ElevatedButton(
          onPressed: () {
            context.read(counterCubitProvider).increment();
          },
          child: Text('Increment'),
        ),
        ElevatedButton(
          onPressed: () {
            context.read(counterCubitProvider).decrement();
          },
          child: Text('Decrement'),
        ),
      ],
    );
  }
}

Consumer(
  builder: (context, watch, child) {
    final count = watch(counterCubitProvider);
    return Text('Increment Count: $count');
  },
),

final incrementCount = memoize((int count) => 'Increment Count: $count');

BlocBuilder<CounterCubit, int>(
  builder: (context, count) {
    return Text(incrementCount(count));
  },
),