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

Implicitly animated widgets

Flutter has a whole set of widgets that have animation built directly into them. These animated widgets also mirror lots of widgets we have already seen, allowing a very easy drop replacement in your widget tree to get some great animations.

These widgets work by animating any changes to their internal state. For example, if a widget has been drawn to the screen in one color, and then a setState property changes the widget’s color, the color change is animated rather than a single frame color switch. First, let’s take a look at the AnimatedContainer widget, after which we will explore the other implicitly animated widgets that are available.

AnimatedContainer

The first widget to look at, and probably the most powerful, is the AnimatedContainer widget. This is very similar to the Container widget we first saw in Chapter 5, Building Your User Interface through Widgets, but adds some key properties that allow it to animate changes.

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