Creating a Simple To-Do List App

This example demonstrates state management and using a ListView to display a list of items.

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'To-Do List',
      theme: ThemeData(primarySwatch: Colors.blue),
      home: ToDoList(),
    );
  }
}

class ToDoList extends StatefulWidget {
  @override
  _ToDoListState createState() => _ToDoListState();
}

class _ToDoListState extends State<ToDoList> {
  final List<String> _tasks = [];
  final TextEditingController _controller = TextEditingController();

  void _addTask() {
    if (_controller.text.isNotEmpty) {
      setState(() {
        _tasks.add(_controller.text);
        _controller.clear();
      });
    }
  }

  void _removeTask(int index) {
    setState(() {
      _tasks.removeAt(index);
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('To-Do List'),
      ),
      body: Column(
        children: [
          Expanded(
            child: ListView.builder(
              itemCount: _tasks.length,
              itemBuilder: (context, index) {
                return ListTile(
                  title: Text(_tasks[index]),
                  trailing: IconButton(
                    icon: Icon(Icons.delete),
                    onPressed: () => _removeTask(index),
                  ),
                );
              },
            ),
          ),
          Padding(
            padding: const EdgeInsets.all(8.0),
            child: Row(
              children: [
                Expanded(
                  child: TextField(
                    controller: _controller,
                    decoration: InputDecoration(labelText: 'New Task'),
                  ),
                ),
                IconButton(
                  icon: Icon(Icons.add),
                  onPressed: _addTask,
                ),
              ],
            ),
          ),
        ],
      ),
    );
  }
}