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Flutter Cookbook

Flutter Cookbook

By : Simone Alessandria, Brian Kayfitz
4.2 (16)
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Flutter Cookbook

Flutter Cookbook

4.2 (16)
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)
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16
About Packt

Using the BLoC pattern

When using the BLoC pattern, everything is a stream of events. A BLoC (which stands for Business Logic Component) is a layer between any source of data and the user interface that will consume the data.

Examples of sources include HTTP data retrieved from a web service, or JSON received from a database.

The BLoC receives streams of data from the source, processes it as required by your business logic, and returns streams of data to its subscribers.

A simple diagram of the role of a BLoC is shown in Figure 11.10:

Diagram  Description automatically generated

Figure 10.10: The BLoC pattern

The main reason for using BLoCs is to separate the concern of the business logic of your app from the presentation that occurs with your widgets, and it is especially useful when your apps become more complex and need to share state in several different places. This makes it easier to reuse your code in different parts of your application, or even in different apps. Also, as BLoCs are completely...

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Flutter Cookbook
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