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Flutter Tutorial – Creating a To-Do List Application

Tiempo de lectura: 3 minutos

A to-do list is a useful application for organizing pending tasks and can be an excellent learning project for those who want to get started with Flutter.

Title: Flutter Tutorial – Creating a To-Do List Application

Objective: In this tutorial, we will learn how to create a simple to-do list application using Flutter, allowing you to effectively organize your pending tasks.

Difficulty Level: Intermediate

Required Tools: Flutter installed on your system, a code editor (such as Visual Studio Code), and an emulator or physical device for testing the application.

Step 1: Set Up the Development Environment

Make sure you have Flutter installed on your system by following the official Flutter documentation.

Step 2: Create a New Flutter Project

Open your terminal and execute the following commands to create a new Flutter project:

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flutter create to_do_list_app
cd to_do_list_app
flutter create to_do_list_app cd to_do_list_app
flutter create to_do_list_app
cd to_do_list_app

Step 3: Design the User Interface

In the lib/main.dart file, replace the code with the following code that defines the user interface of our to-do list application:

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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 {
List todos = [];
TextEditingController todoController = TextEditingController();
@overridehtml
Copy code
<span class="rt-reading-time" style="display: block;"><span class="rt-label rt-prefix">Reading Time:</span> <span class="rt-time">2</span> <span class="rt-label rt-postfix">minutes</span></span>
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 { List todos = []; TextEditingController todoController = TextEditingController(); @overridehtml Copy code <span class="rt-reading-time" style="display: block;"><span class="rt-label rt-prefix">Reading Time:</span> <span class="rt-time">2</span> <span class="rt-label rt-postfix">minutes</span></span>
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 {
  List todos = [];
  TextEditingController todoController = TextEditingController();

  @overridehtml
Copy code
Reading Time: 2 minutes

A to-do list is a useful application for organizing pending tasks and can be an excellent learning project for those who want to get started with Flutter.

Title: Flutter Tutorial – Creating a To-Do List Application

Objective: In this tutorial, we will learn how to create a simple to-do list application using Flutter, allowing you to effectively organize your pending tasks.

Difficulty Level: Intermediate

Required Tools: Flutter installed on your system, a code editor (such as Visual Studio Code), and an emulator or physical device for testing the application.

Step 1: Set Up the Development Environment

Make sure you have Flutter installed on your system by following the official Flutter documentation.

Step 2: Create a New Flutter Project

Open your terminal and execute the following commands to create a new Flutter project:

Plain text
Copy to clipboard
Open code in new window
EnlighterJS 3 Syntax Highlighter
flutter create to_do_list_app
cd to_do_list_app
flutter create to_do_list_app cd to_do_list_app
flutter create to_do_list_app
cd to_do_list_app

Step 3: Design the User Interface

In the lib/main.dart file, replace the code with the following code that defines the user interface of our to-do list application:

Plain text
Copy to clipboard
Open code in new window
EnlighterJS 3 Syntax Highlighter
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 {
List todos = [];
TextEditingController todoController = TextEditingController();
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('To-Do List'),
),
body: Column(
children: [
Padding(
padding: const EdgeInsets.all(8.0),
child: TextField(
controller: todoController,
decoration: InputDecoration(
hintText: 'New task',
),
),
),
ElevatedButton(
onPressed: () {
setState(() {
todos.add(todoController.text);
todoController.text = '';
});
},
child: Text('Add Task'),
),
Expanded(
child: ListView.builder(
itemCount: todos.length,
itemBuilder: (context, index) {
return ListTile(
title: Text(todos[index]),
);
},
),
),
],
),
);
}
}
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 { List todos = []; TextEditingController todoController = TextEditingController(); @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( title: Text('To-Do List'), ), body: Column( children: [ Padding( padding: const EdgeInsets.all(8.0), child: TextField( controller: todoController, decoration: InputDecoration( hintText: 'New task', ), ), ), ElevatedButton( onPressed: () { setState(() { todos.add(todoController.text); todoController.text = ''; }); }, child: Text('Add Task'), ), Expanded( child: ListView.builder( itemCount: todos.length, itemBuilder: (context, index) { return ListTile( title: Text(todos[index]), ); }, ), ), ], ), ); } }
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 {
  List todos = [];
  TextEditingController todoController = TextEditingController();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('To-Do List'),
      ),
      body: Column(
        children: [
          Padding(
            padding: const EdgeInsets.all(8.0),
            child: TextField(
              controller: todoController,
              decoration: InputDecoration(
                hintText: 'New task',
              ),
            ),
          ),
          ElevatedButton(
            onPressed: () {
              setState(() {
                todos.add(todoController.text);
                todoController.text = '';
              });
            },
            child: Text('Add Task'),
          ),
          Expanded(
            child: ListView.builder(
              itemCount: todos.length,
              itemBuilder: (context, index) {
                return ListTile(
                  title: Text(todos[index]),
                );
              },
            ),
          ),
        ],
      ),
    );
  }
}

Step 4: Run the Application

Run the application on your emulator or physical device using the following command in the terminal:

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flutter run
flutter run
flutter run

Step 5: Test the Application

Open the application on your device and start adding tasks to your list. You can add, edit, and delete tasks from the list.

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