[BUG] warning NU1608 on adding CommunityToolkit.Maui.Camera in .NET 10

[peruchali]

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

In latest .NET 10, on adding <PackageReference Include="CommunityToolkit.Maui.Camera" Version="5.0.0" />, getting these warnings on building:

warning NU1608: Detected package version outside of dependency constraint: Xamarin.AndroidX.Fragment.Ktx 1.8.8.1 requires Xamarin.AndroidX.Fragment (>= 1.8.8.1 && < 1.8.9) but version Xamarin.AndroidX.Fragment 1.8.9 was resolved.
warning NU1608: Detected package version outside of dependency constraint: Xamarin.AndroidX.Lifecycle.Process 2.9.2.1 requires Xamarin.AndroidX.Lifecycle.Runtime (>= 2.9.2.1 && < 2.9.3) but version Xamarin.AndroidX.Lifecycle.Runtime 2.9.3 was resolved.
warning NU1608: Detected package version outside of dependency constraint: Xamarin.AndroidX.Fragment.Ktx 1.8.8.1 requires Xamarin.AndroidX.Fragment (>= 1.8.8.1 && < 1.8.9) but version Xamarin.AndroidX.Fragment 1.8.9 was resolved.

Expected Behavior

No warning.

Steps To Reproduce

1. In VS 2026, create a new .NET MAUI app (.NET 10)
2. Update NuGet packges to latest (.NET MAUI 10.0.10)
3. Build, verify build succeeds
4. In MauiApp1.csproj, add:

<PackageReference Include="CommunityToolkit.Maui.Camera" Version="5.0.0" />

5. Build

Link to public reproduction project repository

https://github.com/CommunityToolkit/Maui/issues

Environment

- .NET MAUI CommunityToolkit:13.0.0
- .NET MAUI CommunityToolkit Camera:5.0.0
- OS:
- .NET MAUI:10.0.10

Anything else?

No response

[ne0rrmatrix]

This is an issue with transitive dependencies and unless you are getting errors and cannot build or are having issues with camera not working as expected I don't see a solution before the underlying issues are solved. That will be solved in the Android bindings and or library bindings themselves and not here. We can mitigate the issue by hiding the warnings or manually setting library dependencies to fix errors that prevent buidling but fixing these warnings is not possible. Keeping Android libraries in sync with all the various dependencies is a nightmare.

[peruchali]

@ne0rrmatrix On building, I get this error also:

1>C:\source\repos\MauiApp5\MauiApp5\obj\Debug\net10.0-android\AndroidManifest.xml(9,3): java.exe error AMM0000: 	uses-sdk:minSdkVersion 21 cannot be smaller than version 23 declared in library C:\source\repos\MauiApp5\MauiApp5\obj\Debug\net10.0-android\lp\174\jl\AndroidManifest.xml as the library might be using APIs not available in 21
1>C:\source\repos\MauiApp5\MauiApp5\obj\Debug\net10.0-android\AndroidManifest.xml(9,3): java.exe error AMM0000: 	Suggestion: use a compatible library with a minSdk of at most 21,
1>C:\source\repos\MauiApp5\MauiApp5\obj\Debug\net10.0-android\AndroidManifest.xml(9,3): java.exe error AMM0000: 		or increase this project's minSdk version to at least 23,
1>C:\source\repos\MauiApp5\MauiApp5\obj\Debug\net10.0-android\AndroidManifest.xml(9,3): java.exe error AMM0000: 		or use tools:overrideLibrary="androidx.camera.core" to force usage (may lead to runtime failures)
1>C:\source\repos\MauiApp5\MauiApp5\obj\Debug\net10.0-android\AndroidManifest.xml(9,3): java.exe error AMM0000: Directory 'obj\Debug\net10.0-android\lp\174' is from 'androidx.camera.camera-core.aar'.
1>C:\Program Files\dotnet\packs\Microsoft.Android.Sdk.Windows\36.1.2\tools\Xamarin.Android.Common.targets(1689,3): error XAAMM0000: C:\source\repos\MauiApp5\MauiApp5\obj\Debug\net10.0-android\AndroidManifest.xml:9:3-72 Error:
1>C:\Program Files\dotnet\packs\Microsoft.Android.Sdk.Windows\36.1.2\tools\Xamarin.Android.Common.targets(1689,3): error XAAMM0000: 	uses-sdk:minSdkVersion 21 cannot be smaller than version 23 declared in library C:\source\repos\MauiApp5\MauiApp5\obj\Debug\net10.0-android\lp\174\jl\AndroidManifest.xml as the library might be using APIs not available in 21
1>C:\Program Files\dotnet\packs\Microsoft.Android.Sdk.Windows\36.1.2\tools\Xamarin.Android.Common.targets(1689,3): error XAAMM0000: 	Suggestion: use a compatible library with a minSdk of at most 21,
1>C:\Program Files\dotnet\packs\Microsoft.Android.Sdk.Windows\36.1.2\tools\Xamarin.Android.Common.targets(1689,3): error XAAMM0000: 		or increase this project's minSdk version to at least 23,
1>C:\Program Files\dotnet\packs\Microsoft.Android.Sdk.Windows\36.1.2\tools\Xamarin.Android.Common.targets(1689,3): error XAAMM0000: 		or use tools:overrideLibrary="androidx.camera.core" to force usage (may lead to runtime failures)

[ne0rrmatrix]

The minimum version of android supported is 23. That is what that error is about. I'm pretty sure that is a hard requirement. It used to be 21 but I believe with dotnet 10 is was bumped to 23.

[peruchali]

@ne0rrmatrix I see. How do I fix this/set the minimum?

[ne0rrmatrix]

You need to set it in csproj file

[ne0rrmatrix]

This issue on Maui repo shows how widespread this particular issue is: dotnet/maui#32593