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Flutter Cookbook

You're reading from   Flutter Cookbook Over 100 proven techniques and solutions for app development with Flutter 2.2 and Dart

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Product type Paperback
Published in Jun 2021
Publisher Packt
ISBN-13 9781838823382
Length 646 pages
Edition 1st Edition
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Authors (2):
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Simone Alessandria Simone Alessandria
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Simone Alessandria
Brian Kayfitz Brian Kayfitz
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Brian Kayfitz
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Toc

Table of Contents (17) Chapters Close

Preface 1. Getting Started with Flutter 2. Dart: A Language You Already Know FREE CHAPTER 3. Introduction to Widgets 4. Mastering Layout and Taming the Widget Tree 5. Adding Interactivity and Navigation to Your App 6. Basic State Management 7. The Future is Now: Introduction to Asynchronous Programming 8. Data Persistence and Communicating with the Internet 9. Advanced State Management with Streams 10. Using Flutter Packages 11. Adding Animations to Your App 12. Using Firebase 13. Machine Learning with Firebase ML Kit 14. Distributing Your Mobile App 15. Flutter Web and Desktop 16. 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(); 
...
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