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:

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:

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
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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:

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:

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:

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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