main.dart

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  static const Widget _home = MyHomePage();
  @override
  Widget build(BuildContext context) => MaterialApp(
        home: _home,
      );
}

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

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

class _MyHomePageState extends State<MyHomePage> {
  bool _rebuild = true;

  List<Widget> _noRebuilding;

  List<Widget> get _rebuilding => [
        for (int i = 0; i < 5; ++i)
          ChronoListTile(
            key: ValueKey('$i'),
            index: i,
          ),
      ];

  @override
  void initState() {
    super.initState();
    _noRebuilding = _rebuilding;
  }

  @override
  Widget build(BuildContext context) => Scaffold(
        appBar: AppBar(
            title: Text(_rebuild ? 'will rebuild' : 'wont rebuild'),
            actions: [
              Padding(
                padding: const EdgeInsets.only(right: 160),
                child: Switch(
                  value: _rebuild,
                  onChanged: (bool _bool) => setState(() => _rebuild = _bool),
                ),
              ),
            ]),
        body: ListView(
          children: _rebuild ? _rebuilding : _noRebuilding,
        ),
        floatingActionButton: FloatingActionButton(
            child: const Icon(Icons.refresh), onPressed: () => setState(() {})),
      );
}

class ChronoListTile extends StatefulWidget {
  const ChronoListTile({@required this.index, Key key}) : super(key: key);
  final int index;

  @override
  State<StatefulWidget> createState() => ChronoListTileState();
 
}

class ChronoListTileState extends State<ChronoListTile> {
  Stream<int> _stream;

  @override
  void initState() {
    super.initState();
    _stream = Stream<int>.periodic(
      const Duration(milliseconds: 100),
      (int ms) => ms,
    );
  }

  
   @override
  Widget build(BuildContext context) => ListTile(
        leading: Text('${widget.index}'),
        trailing: StreamBuilder<int>(
          stream: _stream,
          initialData: 0,
          builder: (
            BuildContext context,
            AsyncSnapshot<int> snapshot,
          ) =>
              Text(
            snapshot.hasError
                ? 'error'
                : !snapshot.hasData ? 'waiting' : '${snapshot.data}',
          ),
        ),
      );
}