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...

Being able to use the camera and adding pictures to your app is useful not only for ML but also for several other features you might want to add to your app. You can leverage the camera plugin to get a list of the available cameras in the device and take photos or videos.  

With the camera plugin, you get access to two useful objects:  

  • CameraController connects to a device's camera and you use it to take pictures or videos.  
  • CameraDescription contains the properties of a camera device, including its name and orientation. 

Most devices have two cameras, one on the front (for selfies) and the other on the back, but some devices may only have one, and others more than two when they connect an external camera. That’s why in our code we created a dynamic List of CameraDescription objects to make the user choose the camera they want to use with the following instruction: 

cameras = await availableCameras();