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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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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

Managing the data layer with InheritedWidget

How should you call the data classes in your app? 

You could, in theory, set up a place in static memory where all your data classes will reside, but that won't play well with tools such as Hot Reload and could even introduce some undefined behavior down the road. The better options involve placing your data classes in the widget tree so they can take advantage of your application's life cycle. 

The question then becomes, how can you place a model in the widget tree? Models are not widgets, after all, and there is nothing to build onto the screen.

A possible solution is using InheritedWidget. So far, we've only been using two types of widgets: StatelessWidget and StatefulWidget. Both of these widgets are concerned with rendering widgets onto the screen; the only difference is that one can change and the other cannot. InheritedWidget is another beast entirely. Its job is to pass data down to its children,...

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