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)
About Packt

How it works...

This recipe added two features to the animation you completed here: finding the size of the space where the Ball object could move, and adding a curve to the movement: both are very useful tools when designing animations for your apps.

In order to find the available space, we used a SafeArea widget containing a LayoutBuilder.

SafeArea is a widget that adds some padding to its child in order to avoid intrusions by the operating system, like the status bar at the top of the screen or the notch that you find on some phones. This is useful when you want to only use the available space for your app.

A LayoutBuilder allows measuring the space available in the current context, as it provides the parent’s constraints: in our example, the contraints of the SafeArea widget. A LayoutBuilder widget requires a builder in its constructor. This takes a function with the current context and the parent’s constraints.

Consider the following instructions:

body: SafeArea(child...