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

How it works...

This recipe is quite similar to the previous one, but here, we used PUT, a verb that's conventionally used when an app asks the web server to update an existing piece of data.

This is why we had to instruct our mock web service to accept a PUT at the /pizza address so that we could try sending some data to it. It would respond with a success message. Note that the /pizza address is exactly the same one we set for POST the only thing that changes is the verb. In other words, you can perform a different action at the same URL, depending on the verb you use.

After creating the PUT stub in MockLab, we created the putPizza method, which works just like the postPizza method, except for its verb.

To make the user update an existing Pizza, we used the same screen, PizzaDetail, but we also passed the Pizza object we wanted to update and a boolean value that tells us whether the Pizza object is a new object (so it should use POST) or an existing one (so it...