Book Image

Flutter for Beginners - Third Edition

By : Thomas Bailey, Alessandro Biessek
5 (2)
Book Image

Flutter for Beginners - Third Edition

5 (2)
By: Thomas Bailey, Alessandro Biessek

Overview of this book

There have been many attempts at creating frameworks that are truly cross-platform, but most struggle to create a native-like experience at high-performance levels. Flutter achieves this with an elegant design and a wealth of third-party plugins, solidifying its status as the future of mobile app development. If you are a mobile developer who wants to create rich and expressive native apps with the latest Google Flutter framework, this book is for you. You’ll start with the basics of cross-platform development frameworks, specifically Flutter. You’ll then explore the Dart programming language which is the foundation of the Flutter framework. Next, you’ll get a feel for Flutter and how to create your first app, followed by an exploration of the various popular plugins that supplement the Flutter framework. Finally, you’ll explore testing and app release, including some common glitches that you may experience. By the end of this book, you’ll be well-equipped to create and release a basic Flutter app along with gaining a solid understanding of the Flutter framework and Dart language.
Table of Contents (20 chapters)
1
Part 1:Learning the Core Concepts
6
Part 2:Building a Basic Flutter App
11
Part 3:Turning a Simple App into an Awesome App
15
Part 4:Testing and Releasing Your App

Passing data between screens

In almost all apps, there is the concept of application state. This is larger than the state within one widget as it travels with the user throughout the app. If you have worked with other frameworks, you will have seen varying ways to hold application state, and Flutter doesn’t have a single way to hold and share state.

We will look at options for how to store application state long term, such as in a cloud database, in Chapter 10, Popular Third-Party Plugins, but once the state has been retrieved from storage, how should you share that state among your many different application screens?

It’s worth noting that there is no right or wrong answer for state management, but every approach has benefits and weaknesses and you will need to decide which approach suits you from the maintenance, code readability, and app usage perspectives.

Passing state in widget parameters

The simplest way to share state around your app, and probably...