Resolving UnsupportedOperationException with BadgeDrawable in BottomNavigationView

Описание: Learn how to fix the `UnsupportedOperationException` in `BottomNavigationView` when using `BadgeDrawable` by updating your theme settings.
---
This video is based on the question https://stackoverflow.com/q/68366116/ asked by the user 'Ahmed Elsayed' ( https://stackoverflow.com/u/11567530/ ) and on the answer https://stackoverflow.com/a/68880057/ provided by the user 'Ahmed Elsayed' ( https://stackoverflow.com/u/11567530/ ) 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: UnsupportedOperationException while using BadgeDrawable with BottomNavigationView

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.
---
Resolving UnsupportedOperationException with BadgeDrawable in BottomNavigationView

If you've ever encountered the dreaded UnsupportedOperationException while working with BadgeDrawable in BottomNavigationView, you're not alone. This issue often arises when attempting to display badges on your bottom navigation icons, accompanied by a frustrating error message about failing to resolve attributes. In this post, we will delve into the problem and guide you through the solution step-by-step to get your badges displaying seamlessly.

Understanding the Problem

When using BadgeDrawable in conjunction with BottomNavigationView, a common pitfall is running into an UnsupportedOperationException. This particularly happens when you try to display a badge, and the application throws an error indicating it couldn't resolve certain attributes.

Common Symptoms:

Exception message indicating failure to resolve attributes.

The badge does not appear on your bottom navigation icons.

The application crashes when attempting to set a badge.

The stack trace provides more insights, pointing to issues during the initialization of the BadgeDrawable, particularly regarding color state lists.

Solution Overview

After troubleshooting the above error, the solution is relatively straightforward. The most effective fix is changing your app theme from an AppCompat theme to a Material Components theme. This alteration ensures compatibility with the Material Design components, including badges, leading to a smoother implementation.

Step-by-Step Solution:

Identify Your Current Theme:
You may find your current theme set in your styles.xml file. For instance, you might have something like this:

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

Change the Theme:
Update your theme from AppCompat to MaterialComponents. Change the line to read as follows:

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

Rebuild Your Project:
After making changes to your theme, it's crucial to rebuild your project to ensure that all resources are compiled correctly.

Testing Your Badges:
After you've updated the theme and rebuilt your project, set up your badges as you normally would. Here’s a quick reminder of how you might set the badge in your activity:

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

Conclusion

Switching from an AppCompat theme to Material Components is an effective solution for resolving the UnsupportedOperationException encountered while using BadgeDrawable with BottomNavigationView. This small but impactful change helps ensure your app leverages the most recent Material Design components without causing compatibility issues.

By following the steps outlined above, you'll not only suppress the error but also enhance your application's UI consistency and compliance with modern Android practices. Happy coding!