Flutter添加状态管理库provider

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  provider: ^6.1.2

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import 'package:base_demo/widgets/getx_widget.dart';
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';

class CounterModel extends ChangeNotifier {
  int _counter = 0;

  int get counter => _counter;

  void increment() {
    _counter++;
    notifyListeners();
  }

  void decrement() {
    _counter++;
    notifyListeners();
  }
}

class ProviderWidget extends StatefulWidget {
  const ProviderWidget({super.key});

  @override
  ProviderWidgetState createState() => ProviderWidgetState();
}

class ProviderWidgetState extends State<ProviderWidget> {


  @override
  Widget build(BuildContext context) {
    final counter = Provider.of<CounterModel>(context);

    return Column(
      mainAxisAlignment: MainAxisAlignment.center,
      children: [
        Text('counter value:${counter.counter}'),
        ElevatedButton(onPressed: () => counter.increment(), child: const Text('+')),
        ElevatedButton(onPressed: () => counter.decrement(), child: const Text('-')),
      ],
    );
  }
}

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import 'package:provider/provider.dart';

void main() async {
  XLogger.getLogger().d("main init");
  WidgetsBinding widgetsBinding = WidgetsFlutterBinding.ensureInitialized();
  FlutterNativeSplash.preserve(widgetsBinding: widgetsBinding);
  FlutterNativeSplash.remove();

  await HiveManage.init();

  runApp(
    MultiProvider(
      providers: [
        ChangeNotifierProvider(create: (context) => CounterModel()),
      ],
      child: const MyApp(),
    ),
  );
}