如何使用Provider.of(...)在颤动中的单例中？

dependencies:
  flutter:
    sdk: flutter
  provider: ^5.0.0

import 'package:flutter/foundation.dart';

class AnimationState extends ChangeNotifier {
  bool _isAnimating = false;

  bool get isAnimating => _isAnimating;

  void startAnimation() {
    _isAnimating = true;
    notifyListeners();
  }

  void stopAnimation() {
    _isAnimating = false;
    notifyListeners();
  }
}

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

void main() {
  runApp(
    ChangeNotifierProvider(
      create: (context) => AnimationState(),
      child: MyApp(),
    ),
  );
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Provider Example',
      home: HomePage(),
    );
  }
}

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

class HomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final animationState = Provider.of<AnimationState>(context);

    return Scaffold(
      appBar: AppBar(
        title: Text('Flutter Provider Example'),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Text(
              'Animation Status: ${animationState.isAnimating}',
              style: TextStyle(fontSize: 20),
            ),
            SizedBox(height: 20),
            ElevatedButton(
              onPressed: () {
                if (animationState.isAnimating) {
                  animationState.stopAnimation();
                } else {
                  animationState.startAnimation();
                }
              },
              child: Text(animationState.isAnimating ? 'Stop Animation' : 'Start Animation'),
            ),
          ],
        ),
      ),
    );
  }
}