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

Slivers

I’ll be honest, the first few times I tried to use slivers, I really struggled. It’s a bit of a mental switch from the widgets we have learned about so far because it introduces the complexities of scrolling. We have already seen slivers in action when we briefly looked at ListView.

The main issue is that when you add scrolling into your app, you effectively remove constraints around the size of your widget. If a widget is in a vertically scrollable area, then it can become infinitely tall and, unsurprisingly, Flutter isn’t keen on displaying infinitely large widgets.

Therefore, although we will look at this area now, I strongly suggest that if you want to use slivers, you do some serious research into the area first. Otherwise, you’ll be bouncing from errors to overflows and back to errors with no hope in sight. However, if you can master this area, then you can make some seriously impressive layouts that will definitely impress your users...