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

Designing an HTTP client and getting data

Most mobile apps rely on data that comes from an external source. Think of apps for reading books, watching movies, sharing pictures with your friends, reading the news, or writing emails: all these apps use data taken from an external source. When an app consumes external data, usually, there is a backend service that provides that data for the app: a web service or web API.

What happens is that your app (frontend or client) connects to a web service over HTTP and requests some data. The backend service then responds by sending the data to the app, usually in .json or .xml format.

For this app, we will create an app that reads and writes data from a web service. As creating a web API is well beyond the scope of this book, we will use a mock service, called MockLab, that will simulate the behavior of a real web service, but will be extremely easy to set up and use. In a later chapter, you will also see another way of creating a real-world backend...