favorite_selector_list.dart

// your roll no
import 'package:flutter/material.dart';
import 'package:english_words/english_words.dart';

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

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

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

class _RandomWordsState extends State<RandomWords> {
  final List<WordPair> _suggestions = <WordPair>[]; // NEW
  final TextStyle _biggerFont = const TextStyle(fontSize: 18); // NEW
  @override
  Widget build(BuildContext context) {
    //final wordPair = WordPair.random(); // NEW
    //return Text(wordPair.asPascalCase); // NEW
    //return Container();

    return Scaffold(
      // Add from here...
      appBar: AppBar(
        title: Text('Startup Name Generator'),
      ),
      body: _buildSuggestions(),
    );
  }

  Widget _buildSuggestions() {
    return ListView.builder(
        padding: const EdgeInsets.all(16),
        // The itemBuilder callback is called once per suggested
        // word pairing, and places each suggestion into a ListTile
        // row. For even rows, the function adds a ListTile row for
        // the word pairing. For odd rows, the function adds a
        // Divider widget to visually separate the entries. Note that
        // the divider may be difficult to see on smaller devices.
        itemBuilder: (BuildContext _context, int i) {
          // Add a one-pixel-high divider widget before each row
          // in the ListView.
          if (i.isOdd) {
            return Divider();
          }

          // The syntax "i ~/ 2" divides i by 2 and returns an
          // integer result.
          // For example: 1, 2, 3, 4, 5 becomes 0, 1, 1, 2, 2.
          // This calculates the actual number of word pairings
          // in the ListView,minus the divider widgets.
          final int index = i ~/ 2;
          // If you've reached the end of the available word
          // pairings...
          if (index >= _suggestions.length) {
            // ...then generate 10 more and add them to the
            // suggestions list.
            _suggestions.addAll(generateWordPairs().take(10));
          }
          return _buildRow(_suggestions[index]);
        });
  }

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