main.dart

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: ItemList(),
    );
  }
}

class ItemList extends StatefulWidget {
  ItemList({Key key}) : super(key: key);

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

class _ItemListState extends State<ItemList> {
  List<String> items;
  List<int> ids;
  List<Widget> widgetItem;

  @override
  void initState() {
    super.initState();
    items = ['Item 1', 'Item 2', 'Item 3', 'Item 4', 'Item 5'];
    ids = [1, 2, 3, 4, 5];
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: ListView.builder(
        itemCount: items.length,
        itemBuilder: (BuildContext context, int index) {
          return ExpansionTile(
            title: Text('Title'),
            children: <Widget>[
              Row(
                children: <Widget>[
                  Text(items[index]),
                  IconButton(
                    icon: Icon(Icons.delete),
                    onPressed: () => setState(() => items.removeAt(index)),
                  ),
                ],
              ),
            ],
          );
        },
      ),
    );
  }
}