如何在颤振中创建动态嵌套列表视图

Question

我需要创建嵌套列表视图，下面的代码工作正常，但我需要 listOfTiles 作为动态， 例如：我正在通过“银行”、“社交媒体”，即硬编码， 以下是我的适当列表，通过使用 _types、_names、_subtypes 等列表，我需要创建 listOfTiles

结果会像， 如果我点击 Banks，那将有 sbi hdfc 如果我点击 SociaMedia，就会有 fb

List<Type> _types = ['Banks','SociaMedia']
List<Name> _names = ['SBI','HDFC','FB']
List<SubType> _subtypes = ['Net Banking','Debit card']

body: new ListView.builder(
          itemBuilder: (BuildContext context, int index) {
            return new StuffInTiles(listOfTiles[index]);
          },
          itemCount: listOfTiles.length,
        )

class StuffInTiles extends StatelessWidget {
  final MyTile myTile;

  StuffInTiles(this.myTile);

  @override
  Widget build(BuildContext context) {
    return _buildTiles(myTile);
  }

  Widget _buildTiles(MyTile t) {
    if (t.children.isEmpty)
      return new ListTile(
          onTap: () => print("tap"),
          subtitle: new Text("Subtitle"),
          selected: false,
          title: new Text(t.title));
    return new ExpansionTile(
      key: new PageStorageKey<int>(1),
      title: new Text(t.title),
      children: t.children.map(_buildTiles).toList(),
    );
  }
}


class MyTile {
  String title;
  List<MyTile> children;
  MyTile(this.title, [this.children = const <MyTile>[]]);
}


List<MyTile> listOfTiles = <MyTile>[
  new MyTile(
    'Banks',
    <MyTile>[
      new MyTile(
        'SBI',
        <MyTile>[
          new MyTile(
            'NetBanking',
            <MyTile>[
              new MyTile('username'),
              new MyTile('password'),
            ],
          ),
        ],
      ),
    ],
  ),
  new MyTile(
    'SocialMedia',
    <MyTile>[
      new MyTile('Gmail'),
      new MyTile('Facebook'),
      new MyTile('Twitter'),
    ],
  )]```

Answer 1

很难理解你想要什么 - 但让我试着帮助你

我想这就是你要找的东西：

class MyTile {
  var tileName;
  MyTile({
    this.tileName,
  });
}

// Your dynamic List
var myTile = [
  MyTile(
    tileName: 'Banks',
  ),
  MyTile(
    tileName: 'SBI',
  ),
  MyTile(
    tileName: 'username',
  ),
  MyTile(
    tileName: 'password',
  ),
  MyTile(
    tileName: 'SocialMedia',
  ),
  MyTile(
    tileName: 'Gmail',
  ),
  MyTile(
    tileName: 'Facebook',
  ),
];