issue_109983

main.dart

import 'package:flutter/material.dart';

void main() => runApp(const MaterialApp(home: MyHomePage()));

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

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  late final ValueNotifier<List<String>> _notifier;

  @override
  void initState() {
    _notifier = ValueNotifier([]);
    super.initState();
  }

  @override
  void dispose() {
    _notifier.dispose();
    super.dispose();
  }

  void _add() => _notifier.value = [
        '${_notifier.value.length}',
        ..._notifier.value,
      ];

  @override
  Widget build(context) => Scaffold(
        appBar: AppBar(title: const Text('AppBar')),
        body: MyListView(notifier: _notifier),
        floatingActionButton: FloatingActionButton(
          onPressed: _add,
          child: const Icon(Icons.add),
        ),
      );
}

class MyListView extends StatelessWidget {
  final ValueNotifier<List<String>> notifier;
  const MyListView({
    required this.notifier,
    super.key,
  });

  @override
  Widget build(context) => ValueListenableBuilder<List<String>>(
        valueListenable: notifier,
        builder: (context, strings, child) => ListView.builder(
          reverse: true,
          itemCount: strings.length,
          itemBuilder: (context, index) => ListTile(
            title: Text(
              strings[index],
            ),
          ),
        ),
      );
}