flutter 创建一个无限滚动的 ListView

main.dart

import 'package:flutter/material.dart';
import 'package:english_words/english_words.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final wordPair = new WordPair.random();
//    return new MaterialApp(
//      title: 'Welcome to Flutter',
//      home: new Scaffold(
//        appBar: new AppBar(
//          title: const Text('Welcome to Flutter'),
//        ),
//        body: new Center(
////          child: const Text('Hello World'),
////          child: new Text(wordPair.asPascalCase),
//          child: new RandomWords(),
//        ),
//      ),
//    );
    return new MaterialApp(
      title: 'Startup name',
      home: new RandomWords(),
    );
  }
}

class RandomWords extends StatefulWidget {
  @override
  RandomWordsState createState() => new RandomWordsState();
}

class RandomWordsState extends State<RandomWords> {
  final List<WordPair> _suggestions = <WordPair>[];
  final TextStyle _biggerFont = const TextStyle(fontSize: 18.0);

//  @override
  Widget build(BuildContext context) {
//    final WordPair wordPair = new WordPair.random();
//    return new Text(wordPair.asPascalCase);
    return new Scaffold(
      appBar: new AppBar(
        title: new Text('Startup Name Generator'),
      ),
      body: _buildSuggestions(),
    );
  }

  Widget _buildSuggestions() {
    return new ListView.builder(
        padding: const EdgeInsets.all(6.0),
        itemBuilder: (BuildContext _context, int i) {
          if (i.isOdd) {
            return new Divider();
          }
          final int index = i ~/ 2;
          if (index >= _suggestions.length) {
            _suggestions.addAll(generateWordPairs().take(10));
          }
          return _buildRow(_suggestions[index]);
        });
  }

  Widget _buildRow(WordPair pair) {
    return new ListTile(
      title: new Text(
        pair.asPascalCase,
        style: _biggerFont,
      ),
    );
  }
}

pubspec.yaml

name: startup_namer
description: A new Flutter application.

version: 1.0.0+1

environment:
  sdk: ">=2.1.0 <3.0.0"

dependencies:
  flutter:
    sdk: flutter

  cupertino_icons: ^0.1.2
  english_words: ^3.1.0

dev_dependencies:
  flutter_test:
    sdk: flutter

flutter:
  uses-material-design: true