Sample app in flutter: Listview

FlutterListView.dart

import 'package:flutter/material.dart';
import 'package:url_launcher/url_launcher.dart';
import 'src/article.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);

  final String title;

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

class _MyHomePageState extends State<MyHomePage> {
  List<Article> _articles = articles;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: RefreshIndicator(
        onRefresh: () async {
          await new Future.delayed(const Duration(seconds: 1));
          setState(() {
            _articles.removeAt(0);
          });
        },
        child: ListView(
          children: _articles.map(builderItem).toList(),
        ),
      ),
    );
  }

  Widget builderItem(Article article) {
    return Padding(
      padding: const EdgeInsets.all(16.0),
      child: new ExpansionTile(
        title: new Text(
          article.text,
          style: new TextStyle(fontSize: 24.0),
        ),
        children: [
          new Row(
            mainAxisAlignment: MainAxisAlignment.spaceEvenly,
            children: [
              new Text('${article.commentsCount} commnents'),
              new IconButton(
                icon: new Icon(Icons.launch),
                onPressed: () async {
                  final fakeUrl = 'https://${article.domain}';
                  if (await canLaunch(fakeUrl)) {
                    launch(fakeUrl);
                  }
                },
              )
            ],
          )
        ],
      ),
    );
  }
}


class Article {
  const Article({
    this.text,
    this.domain,
    this.by,
    this.age,
    this.score,
    this.commentsCount,
  });

  final String text;
  final String domain;
  final String by;
  final int age;
  final int score;
  final int commentsCount;
}

final List<Article> articles = <Article>[
  Article(
    text: 'Tom Hardy',
    domain: 'google.com',
    by: 'Tom Hardy',
    age: 5,
    score: 123,
    commentsCount: 321,
  ),
  Article(
    text: 'Johnny Depp',
    domain: 'google.com',
    by: 'Johnny Depp',
    age: 5,
    score: 123,
    commentsCount: 321,
  ),
  Article(
    text: 'Tom Cruise',
    domain: 'google.com',
    by: 'Tom Cruise',
    age: 5,
    score: 123,
    commentsCount: 321,
  ),
  Article(
    text: 'Keira Knightley',
    domain: 'google.com',
    by: 'Keira Knightley',
    age: 5,
    score: 123,
    commentsCount: 321,
  ),
  Article(
    text: 'Robert De Niro',
    domain: 'google.com',
    by: 'Robert De',
    age: 5,
    score: 123,
    commentsCount: 321,
  ),
  Article(
    text: 'Leonardo DiCaprio',
    domain: 'google.com',
    by: 'Leonardo DiCaprio',
    age: 5,
    score: 123,
    commentsCount: 321,
  ),
  Article(
    text: 'Will Smith',
    domain: 'google.com',
    by: 'Will Smith',
    age: 5,
    score: 123,
    commentsCount: 321,
  ),
  Article(
    text: 'Russell Crowe',
    domain: 'google.com',
    by: 'Russell Crowe',
    age: 5,
    score: 123,
    commentsCount: 321,
  ),
  Article(
    text: 'Brad Pitt',
    domain: 'google.com',
    by: 'Brad Pitt',
    age: 5,
    score: 123,
    commentsCount: 321,
  ),
  Article(
    text: 'Angelina Jolie',
    domain: 'google.com',
    by: 'Angelina Jolie',
    age: 5,
    score: 123,
    commentsCount: 321,
  ),
  Article(
    text: 'Kate Winslet',
    domain: 'google.com',
    by: 'Kate Winslet',
    age: 5,
    score: 123,
    commentsCount: 321,
  ),
  Article(
    text: 'Christian Bale',
    domain: 'google.com',
    by: 'Christian Bale',
    age: 5,
    score: 123,
    commentsCount: 321,
  ),
  Article(
    text: 'Morgan Freeman',
    domain: 'google.com',
    by: 'Morgan Freeman',
    age: 5,
    score: 123,
    commentsCount: 321,
  ),
  Article(
    text: 'Hugh Jackman',
    domain: 'google.com',
    by: 'Hugh Jackman',
    age: 5,
    score: 123,
    commentsCount: 321,
  ),
  Article(
    text: 'Keanu Reeves',
    domain: 'google.com',
    by: 'Keanu Reeves',
    age: 5,
    score: 123,
    commentsCount: 321,
  ),
  Article(
    text: 'Tom Hanks',
    domain: 'google.com',
    by: 'Tom Hanks',
    age: 5,
    score: 123,
    commentsCount: 321,
  ),
  Article(
    text: 'Scarlett Johansson',
    domain: 'google.com',
    by: 'Scarlett Johansson',
    age: 5,
    score: 123,
    commentsCount: 321,
  ),
  Article(
    text: 'Robert Downey Jr.',
    domain: 'google.com',
    by: 'Robert Downey',
    age: 5,
    score: 123,
    commentsCount: 321,
  )
];