intro_flutter.dart

import 'package:flutter/material.dart';

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

final data = [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,20]
  .map((x) => {'name':' Dart $x'}).toList();

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

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

  final String title;

  @override
  Widget build(BuildContext context) => Scaffold(
        appBar: AppBar(
          title: Text(title),
        ),
        body: Center(
          child: ListView.builder(
            itemCount: data.length,
            itemBuilder: (context, index) => Row(
              children: <Widget>[
                Padding(
                  padding: EdgeInsets.all(10),
                  child: Center(
                    child: Text('${data[index]["name"]}'),
                  ),
                ),
              ],
            ),
          ),
        ),
      );
}