Book Image

Flutter Cookbook

By : Simone Alessandria, Brian Kayfitz
4 (1)
Book Image

Flutter Cookbook

4 (1)
By: Simone Alessandria, Brian Kayfitz

Overview of this book

“Anyone interested in developing Flutter applications for Android or iOS should have a copy of this book on their desk.” – Amazon 5* Review Lauded as the ‘Flutter bible’ for new and experienced mobile app developers, this recipe-based guide will teach you the best practices for robust app development, as well as how to solve cross-platform development issues. From setting up and customizing your development environment to error handling and debugging, The Flutter Cookbook covers the how-tos as well as the principles behind them. As you progress, the recipes in this book will get you up to speed with the main tasks involved in app development, such as user interface and user experience (UI/UX) design, API design, and creating animations. Later chapters will focus on routing, retrieving data from web services, and persisting data locally. A dedicated section also covers Firebase and its machine learning capabilities. The last chapter is specifically designed to help you create apps for the web and desktop (Windows, Mac, and Linux). Throughout the book, you’ll also find recipes that cover the most important features needed to build a cross-platform application, along with insights into running a single codebase on different platforms. By the end of this Flutter book, you’ll be writing and delivering fully functional apps with confidence.
Table of Contents (17 chapters)
16
About Packt

Converting Dart models into JSON

JSON has become the standard format for storing, transporting, and sharing data between applications: several web services and databases use JSON to receive and serve data. Later in this chapter, we will learn how to store data in a device, but in this recipe, we will learn how to serialize (or encode) and deserialize (or decode) data structures from/to JSON.

JSON stands for JavaScript Object Notation. Even if it largely follows JavaScript syntax, it can be used independently from Javascript. Most modern languages, including Dart, have methods to read and write JSON data.

The following screenshot shows an example of a JSON data structure:

As you can see, JSON is a text-based format that describes data in key-value pairs: each object (a pizza, in this example) is included curly brackets. In the object, you can specify several properties or fields. The key is generally included in quotes; then, you put a colon, and then the value. All key-value pairs...