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Flutter for Beginners

Flutter for Beginners

By : Thomas Bailey, Biessek
4.4 (8)
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Flutter for Beginners

Flutter for Beginners

4.4 (8)
By: Thomas Bailey, 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, making it 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. This book will guide you through developing your first app from scratch all the way to production release. Starting with the setup of your development environment, you'll learn about your app's UI design and responding to user input via Flutter widgets, manage app navigation and screen transitions, and create widget animations. You'll then explore the rich set of third party-plugins, including Firebase and Google Maps, and get to grips with testing and debugging. Finally, you'll get up to speed with releasing your app to mobile stores and the web. By the end of this Flutter book, you'll have gained the confidence to create, edit, test, and release a full Flutter app on your own.
Table of Contents (18 chapters)
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1
Section 1: Introduction to Flutter and Dart
6
Section 2: The Flutter User Interface – Everything Is a Widget
10
Section 3: Developing Fully Featured Apps
14
Section 4: Testing and App Release

Using generics

The <> syntax is used to specify the type supported by a class. If you look at the examples of lists and maps in Chapter 2, An Introduction to Dart, you will notice that we have not specified the type that they can contain. This is because this type of information is optional, and Dart can infer the type based on elements during the collection initialization.

When and why to use generics

The use of generics can help a developer to maintain and keep collection behavior under control. When we use a collection without specifying the allowed element types, it is our responsibility to correctly insert elements of the expected type. This can lead to bugs when data of an incorrect type is placed in a collection or incorrect assumptions are made about the contents of a collection.

Consider the following code example, where we have named a List variable placeNames. We expect this to be a list of names and nothing else. Unfortunately, without generics, we can place...

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