使用Riverpod将颤动添加到状态

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

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('Tween with Riverpod')),
        body: Center(
          child: TweenExample(),
        ),
      ),
    );
  }
}

class TweenExample extends ConsumerWidget {
  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final tween = ref.watch(tweenProvider);

    return AnimatedBuilder(
      animation: tween,
      builder: (context, child) {
        return Container(
          width: tween.value,
          height: 50,
          color: Colors.blue,
        );
      },
    );
  }
}

final tweenProvider = Provider<Tween<double>>((ref) {
  return Tween<double>(begin: 50, end: 200);
});