Book Image

Flutter Cookbook

By : Simone Alessandria, Brian Kayfitz
4 (1)
Book Image

Flutter Cookbook

4 (1)
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)
16
About Packt

How to do it...

Let's start building our own custom types in Dart:

  1. First, define a class called Name, which is an object that stores a person's first and last names:
class Name {
final String first;
final String last;

Name(this.first, this.last);


@override
String toString() {
return '$first $last';
}
}
  1. Now, let's define a subclass called OfficialName. This will be just like the Name class, but it will also have a title:
class OfficialName extends Name {
// Private properties begin with an underscore
final String _title;

// You can add colons after constructor
// to parse data or delegate to super
OfficialName(this._title, String first, String last)
: super(first, last);

@override
String toString() {
return '$_title. ${super.toString()}';
}
}
  1. Now, we can see all these concepts in action by using the playground method:
void classPlayground() {
final name = OfficialName('Mr', 'Francois', 'Rabelais');
final message = name.toString();
print(message);

}
  1. Finally, add a call to classPlayground in the main method:
main() {
...
classPlayground();
}