[BUG] Android 35+: NavigationBar.SetColor has no effect

[tranb3r]

Is there an existing issue for this?

• I have searched the existing issues

Did you read the "Reporting a bug" section on Contributing file?

• I have read the "Reporting a bug" section on Contributing file: https://github.com/CommunityToolkit/Maui/blob/main/CONTRIBUTING.md#reporting-a-bug

Current Behavior

NavigationBar.SetColor has no effect

Expected Behavior

NavigationBar.SetColor should set the navigation bar color.

Steps To Reproduce

1. Open the sample app
2. Open the NavigationBar color setter page
3. Test the setter

Link to public reproduction project repository

https://github.com/CommunityToolkit/Maui/tree/main/samples

Environment

- .NET MAUI CommunityToolkit: 14.0.0
- OS: Android (35+)
- .NET MAUI: 10.0.30

Anything else?

No response

[TheCodeTraveler]

Confirmed this is not a regression, rather it is a bug introduced in Android 35+ when they deprecated the Window.SetNavigationBarColor() API that we are using to set the Navigation Bar Color:

Maui/src/CommunityToolkit.Maui/PlatformConfiguration/AndroidSpecific/NavigationBar.android.cs

Line 100 in a63844e

window.SetNavigationBarColor(color);

The fix for this is likely similar to the 35.0+ bug fixed for StatusBar in #2939

[tranb3r]

Confirmed this is not a regression, rather it is a bug introduced in Android 35+ when they deprecated the Window.SetNavigationBarColor() API that we are using to set the Navigation Bar Color:

I'm 100% sure it worked with version 13.0.0 (on my app).

[TheCodeTraveler]

I'm 100% sure it worked with version 13.0.0.

Yes and no. It worked on CommunityToolkit.Maui v13.0.0 on Android API 34 and lower, and it continues to work on CommunityToolkit.Maui v14.0.0 on Android API 34 and lower.

This is a bug introduced in Android API 35 where Window.SetNavigationBarColor(), the method we use to set the NavigationBar color, is now a no-op.

The most-recent commit to NavigationBar.android.cs occurred over two years ago. This was not a regression from CommunityToolkit.Maui v13.0.0 to CommunityToolkit.Maui v14.0.0.

Let's please not argue the semantics and focus on the solution to this problem.

[tranb3r]

I've double checked, you're right, it didn't work on Android 35+ with 13.0.0.
Although, I'm seeing a regression on my app with Android 35+, so I must have a small difference in my code, compared to the sample.
I'll try to build a repro. Sorry for the misunderstanding.