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Flutter Cookbook, Second Edition

You're reading from   Flutter Cookbook, Second Edition 100+ step-by-step recipes for building cross-platform, professional-grade apps with Flutter 3.10.x and Dart 3.x

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Product type Paperback
Published in May 2023
Publisher Packt
ISBN-13 9781803245430
Length 712 pages
Edition 2nd Edition
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Author (1):
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Simone Alessandria Simone Alessandria
Author Profile Icon Simone Alessandria
Simone Alessandria
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Table of Contents (19) Chapters Close

Preface 1. Getting Started with Flutter 2. Creating Your First Flutter App FREE CHAPTER 3. Dart: A Language You Already Know 4. Introduction to Widgets 5. Mastering Layout and Taming the Widget Tree 6. Adding Interactivity and Navigation to Your App 7. Basic State Management 8. The Future is Now: Introduction to Asynchronous Programming 9. Data Persistence and Communicating with the Internet 10. Advanced State Management with Streams 11. Using Flutter Packages 12. Adding Animations to Your App 13. Using Firebase 14. Firebase Machine Learning 15. Flutter Web and Desktop 16. Distributing Your Mobile App 17. Other Books You May Enjoy
18. Index

POST-ing data

In this recipe, you will learn how to perform a POST action on a web service. This is useful whenever you are connecting to web services that not only provide data but also allow you to change the information stored on the server-side. Usually, you will have to provide some form of authentication to the service, but for this recipe, as we are using a mock service, this will not be necessary.

Getting ready

  1. To follow along with this recipe, you need to have completed the code in the previous recipe.

How to do it...

To perform a POST action on a web service, follow these steps :

  • Log into the Mock Lab service at https://app.wiremock.cloud/ and click on the Stubs section of the example API. Then, create a new Stub.
  • Complete the request, as follows:

    • Name: Post Pizza
    • Verb: POST
    • Address: /pizza
    • Status: 201
    • Body type: json
    • Body: {"message": "The pizza was posted"}
  • Press the Save button.
  • In the Flutter project, in the httpHelper.dart file, in the HttpHelper...
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