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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

Showing dialogs on the screen

Dialogs, or popups, are used when you want to give a message to your users that needs their attention. This ranges from telling the user about some error that occurred or asking them to perform some action before continuing, or even giving them a warning.

As alerts require some feedback from the user, you should use them for important information prompts or for actions that require immediate attention: in other words, only when really necessary.

The following are the default alerts for Android and iOS:

Figure 6.10: Alerts on Android and iOS

In this recipe, we’re going to create a platform-aware alert and use it to show a prompt when the user stops the stopwatch.

Getting ready

Once again, we’re going to continue with the StopWatch project. You should have completed the previous recipes in this chapter before following along with this one.

How to do it...

We will work with a new file in our...

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