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 it works...

At its core, fastlane is a set of Ruby scripts that automates the deployment of iOS and Android apps. In many cases, the scripts already available within the fastlane toolset are enough to publish your apps, but in some cases, you might find it useful to add your own scripts.


Writing a script that increments the build version is not necessary for iOS, as there is already a lane called increment_build_number that performs this same task.

In the fastlane world, a script is called a lane, and in this recipe, you created a new lane with the following instructions:

lane :IncrementVersion do
end

You write lanes using Ruby, an open source language that is beyond the scope of this book but should be simple enough to read.

The following instruction sets the path variable, which points to the position of the pubspec.yaml file in your project, which is the file that will be updated by the script:

path = '../../pubspec.yaml'

With the following instruction...