Скачать или смотреть How to Implement a Favorites Feature in Flutter Locally?

Discover how to create a user-friendly `favorites feature` in Flutter using shared preferences. Step-by-step guidance for beginners.
---
This video is based on the question https://stackoverflow.com/q/69397027/ asked by the user 'eno2' ( https://stackoverflow.com/u/16951194/ ) and on the answer https://stackoverflow.com/a/69397233/ provided by the user 'user14624595' ( https://stackoverflow.com/u/14624595/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: I'm trying to implement a favorites feature locally in flutter that works both inside the page and on the select page

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
How to Implement a Favorites Feature in Flutter Locally?

Implementing a favorites feature in your Flutter app can greatly enhance user experience by allowing users to mark specific items for easy access later. If this is your first time working with Flutter and you've faced challenges, such as with using GetX for state management, fear not! In this guide, we’ll walk you through a simple solution using Flutter's shared_preferences package to keep track of favorites effectively.

Understanding the Challenge

You want to implement a favorites feature that does the following:

Allows users to click a "Favorites" button on a page.

Updates the Favorites page to reflect items marked as favorite when users navigate back from selection pages.

Provides a seamless user experience without the complexity of using more advanced state management solutions like GetX.

The Solution

To achieve your goal, follow these organized steps to create a favorites feature using shared_preferences. We’ll make sure the implementation is beginner-friendly.

1. Set Up Your Flutter Environment

Before you start coding, ensure you have Flutter set up on your machine. You would also need to add shared_preferences to your project dependencies. You can do this by including the following line in your pubspec.yaml file:

[[See Video to Reveal this Text or Code Snippet]]

After updating your dependencies, don’t forget to run flutter pub get to install the new package.

2. Create Your Stateful Widget

You will need a stateful widget to manage the favorites state. Here’s how you could structure your main widget for the page selection:

[[See Video to Reveal this Text or Code Snippet]]

3. Viewing Your Favorites

In your favorite displays, you will need to pull the state from shared_preferences as you've implemented in the Stateful Widget. This ensures that the UI reflects the current favorite status whenever users return to the selection page.

4. Navigating Between Pages

When navigating to the second page where users can select items to mark as favorites or view their favorites, be sure to pass the toggle function down so that it can update the state accordingly:

[[See Video to Reveal this Text or Code Snippet]]

5. Don’t Forget to Update UI

On the second page, you will need to call the onToggleFavorite function when the user clicks on the Favorites button. This will change the icon color and update the shared preferences accordingly.

Conclusion

Implementing a favorites feature in your Flutter application is not as overwhelming as it seems. With just a few lines of code using shared_preferences, you can store the state of what your users favor and make sure it reflects across different pages. This beginner-friendly method avoids the complexity of advanced packages and focuses on straightforward state management.

Now that you've got a grasp of how to implement this feature, give it a try in your own Flutter app! Happy coding!