Untitled

import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Ignite Todo',
      theme: ThemeData(
        primarySwatch: Colors.pink,
      ),
      home: const MyTodoPage(),
    );
  }
}

class MyTodoPage extends StatefulWidget {
  const MyTodoPage({Key? key}) : super(key: key);

  @override
  State<StatefulWidget> createState() => _MyTodoPageState();
}

class _MyTodoPageState extends State<MyTodoPage> {
  final items = [for (var i = 0; i < 100; i++) 'item $i'];
  final _inputTextFieldController = TextEditingController();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text(
          "todo",
          style: TextStyle(color: Colors.black),
        ),
        actions: [
          TextButton(
            child: const Text(
              'help',
              style: TextStyle(color: Colors.black),
            ),
            onPressed: () {},
          ),
        ],
      ),
      body: ListView(
        children: [
          ListTile(
            title: TextField(
              decoration: const InputDecoration(hintText: 'Add new item...'),
              controller: _inputTextFieldController,
            ),
            trailing: IconButton(
              icon: const Icon(Icons.add),
              onPressed: () {
                final text = _inputTextFieldController.text;
                if (text.isEmpty) return;

                setState(() {
                  items.insert(0, text);
                });
              },
            ),
          ),
          for (var i = 0; i < items.length; i++)
            ListTile(
              title: Text(items[i]),
              trailing: IconButton(
                icon: const Icon(Icons.remove),
                onPressed: () {
                  setState(() {
                    items.removeAt(i);
                  });
                },
              ),
            ),
        ],
      ),
    );
  }
}