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[Bug] Incorrect version of System.Numerics.Vectors is installed
Description
We are implementing our own internal nuget package using "Cross-Platform .NET Standard Library Plugin" template. In this project we would like to consume Xamarin.Essentials nuget package. Once Xamarin.Essentials is installed there is incorrect version of System.Numerics.Vectors (4.5.0 instead of 2.0.5.0) linked to project. When I try to retrieve data from accelerometer like this:
var x = e.Reading.Acceleration.X
I got the error: Error CS0012: The type 'Vector3' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Numerics, Version=2.0.5.0
I tried to install Xamarin.Essentials into Xamarin.Forms project and it installs correct version.
Steps to Reproduce
- Create project using "Cross-Platform .NET Standard Library Plugin" template
- Install Xamarin.Essentials into this project
- Implement Accelerometer_ReadingChanged event in any .apple.cs class
- Try to access coordinates in this event like this e.Reading.Accelration.X
Expected Behavior
The version of System.Numerics.Vectors should be 2.0.5.0
Actual Behavior
The version of System.Numerics.Vectors is 4.5.0
Basic Information
- Version with issue: I tried all versions of Xamarin.Essentials
- Last known good version: NA
- IDE: Visual Studio 2017 and 2019
Screenshots
Additional info:
This is only happening in classes wih sufix apple.cs.
Sufixes uwp.cs, android.cs and shared.cs have linked version 4.5.0 and work.
Can you please add a repro of your issue so we can take a look. Thanks!
@jamesmontemagno I updated this ticket. Hopefully this is more clear now.
Can you show me what your csproj looks like or attach a repro that we can use. It makes it much easier to debug.
So, this is very strange as it doesn't seem to bring in the reference dependencies that we are specifying. @Redth we should look as to why we are bringing in the NuGet globally.... I think this is wrong.
A work around is to add this to your iOS Include:
<Reference Include="System.Numerics" />
<Reference Include="System.Numerics.Vectors" />
I am seeing the same issue when building for Android:
/Library/Frameworks/Mono.framework/Versions/5.16.0/lib/mono/msbuild/15.0/bin/Microsoft.Common.CurrentVersion.targets(5,5): Warning MSB3277: Found conflicts between different versions of "System.Numerics.Vectors" that could not be resolved. These reference conflicts are listed in the build log when log verbosity is set to detailed. (MSB3277) (ExtraconTracker.Droid)
System.Numerics.Vectors 4.5.0 is installed when it needs 2.0.5.0
IDE: VS for Mac Community, 7.8.2b1 Xam.Essentials 1.3.1
iOS builds w/o the warning.
I have the same issue for Android when building on a PC:
C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\MSBuild\15.0\Bin\Microsoft.Common.CurrentVersion.targets(2110,5): warning MSB3277: Found conflicts between different versions of "System.Numerics.Vectors" that could not be resolved. These reference conflicts are listed in the build log when log verbosity is set to detailed.
IDE: VS 2017, 15.9.16 Xam.Essential 1.3.1
Same warning here with Xamarin.Essentials version 1.3.1.
Microsoft Visual Studio Community 2019
Version 16.4.0
VisualStudio.16.Release/16.4.0+29519.181
Microsoft .NET Framework
Version 4.8.03752
Installed Version: Community
Visual C++ 2019 00435-60000-00000-AA534
Microsoft Visual C++ 2019
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ASP.NET and Web Tools 2019 16.4.457.38025
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Azure App Service Tools v3.0.0 16.4.457.38025
Azure App Service Tools v3.0.0
C# Tools 3.4.0-beta4-19569-03+82f2e2541478e239dc4b04f231e90dc2b3dcb422
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CheckedExceptionsPackage Extension 1.0
CheckedExceptionsPackage Visual Studio Extension Detailed Info
CodeMaid 11.1.209
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EditorConfig Language Service 1.17.260
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Mono Debugging for Visual Studio 16.5.23 (1b51e8c)
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NamespaceFixer 2.6
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NuGet Package Manager 5.4.0
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SQL Server Data Tools 16.0.61911.11100
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TypeScript Tools 16.0.11031.2001
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Viasfora 4.2.188
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Visual Basic Tools 3.4.0-beta4-19569-03+82f2e2541478e239dc4b04f231e90dc2b3dcb422
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Visual F# Tools 10.4 for F# 4.6 16.4.0-beta.19556.5+e7597deb7042710a7142bdccabd6f92b0840d354
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Visual Studio Code Debug Adapter Host Package 1.0
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VisualStudio.DeviceLog 1.0
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VisualStudio.Mac 1.0
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VSColorOutput 2.6.7
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Xamarin 16.4.000.305 (d16-4@a9ec5d9)
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Xamarin Designer 16.4.0.464 (remotes/origin/d16-4@4abf337c3)
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Xamarin Templates 16.4.25 (579ee62)
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Xamarin.Android SDK 10.1.0.30 (d16-4/5e2fd06)
Xamarin.Android Reference Assemblies and MSBuild support.
Mono: e1ef774
Java.Interop: xamarin/java.interop/d16-4@c4e569f
ProGuard: xamarin/proguard/master@905836d
SQLite: xamarin/sqlite/3.28.0@46204c4
Xamarin.Android Tools: xamarin/xamarin-android-tools/master@9f4ed4b
Xamarin.iOS and Xamarin.Mac SDK 13.8.2.2 (44c08f2)
Xamarin.iOS and Xamarin.Mac Reference Assemblies and MSBuild support.
Still happening in iOS using Xamarin.Essentials version 1.3.1
/Library/Frameworks/Mono.framework/Versions/6.4.0/lib/mono/msbuild/Current/bin/Microsoft.Common.CurrentVersion.targets(2126,5): warning MSB3277: Found conflicts between different versions of "System.Numerics" that could not be resolved. These reference conflicts are listed in the build log when log verbosity is set to detailed. /Library/Frameworks/Mono.framework/Versions/6.4.0/lib/mono/msbuild/Current/bin/Microsoft.Common.CurrentVersion.targets(2126,5): warning MSB3277: Found conflicts between different versions of "System.Numerics.Vectors" that could not be resolved. These reference conflicts are listed in the build log when log verbosity is set to detailed. 2 Warning(s) 0 Error(s)
Appears to be still happening in Xamarin.Essentials version 1.5.1. I have also made sure all packages on all projects have been updated (core, Droid and iOS).
"warning MSB3277: Found conflicts between different versions of "System.Numerics.Vectors" that could not be resolved."
I have the same problem, when I add the System.Text.Json library to manage json instead of newtonsoft. https://www.nuget.org/packages/System.Text.Json use System.Numerics.Vectors (>= 4.5.0)
Warning Conflicts between different versions of "System.Numerics.Vectors" were found and could not be resolved. These reference conflicts are recorded in the generation log when the verbosity of the log is set to Detailed. MyApp.Android
I am not actually sure if there is anything I can do about this warning actually.
iOS/Android all have a DLL that must be referenced. So when you install System.Text.Json which has a dependency on System.Numeric.Vectors it gives this warning. We can't remove the DLL references as it would fail to compile.
This will probably have to go into the runtime teams. I will have to ask @jonathanpeppers and @chamons perhaps....
It seems that Json.Text.Json does not work on xamarin.ios dotnet/runtime#31326
It is a shame to share its Models (into separate lib netstandard) between its client application and the webapi and especially for the properties of attributes and libs references
Newtonsoft: [JsonProperty ("id")]
System.text.json [JsonPropertyName ("id")]
That is interesting. Yeah I think until version 5.0 you should continue to use Newtonsoft.Json.
I believe you will also see this without that NuGet though as we reference it in the .NET Standard Library. It is a bit unfortunate, but only a warning and doesn't cause any actual runtime issues.
for the bug described here https://github.com/dotnet/runtime/issues/31326 , do you confirm that System.Tet.Json still does not work on Xamarin.Ios?
I am seeing this issue as well - a relatively blank project in terms of added code. I am not using System.Text.Json package/nuget anywhere. I tried uninstalling the Newtonsoft.Json nuget and still get these warnings. I have read through all the comments/linked comments but still unclear on what the fix for this is. Please advise?
I did find this in the ios.csproj file, but i am not sure what package would have added the system.numerics. Is it just safe to delete?
<ItemGroup>
<Reference Include="System" />
<Reference Include="System.Xml" />
<Reference Include="System.Core" />
<Reference Include="Xamarin.iOS" />
<Reference Include="System.Numerics" />
<Reference Include="System.Numerics.Vectors" />
</ItemGroup>
Guys, same issue .... How to fix it? My Project is in suspended mode, can't continue working :(
So, at this time, they are just warnings that can be ignored and have no impact on your project at all.
We are working with the team to see what we can do, but as of right now they can be ignored. Again, it is a warning and has 0 impact on functionality.
@jamesmontemagno I went ahead and edited these two lines out of the ios and android csproj and my projects seems to work fine. Does it break anything if I just keep them deleted?
<Reference Include="System.Numerics" />
<Reference Include="System.Numerics.Vectors" />
That should be alright, I am pretty sure... I haven't tested it though @rezamohamed. The main nuget will still be brought in
Remove the package / library "System.Numerics.Vectors" Find the package in the nuget manager "System.Numerics.Vectors"
Boom then fixet :)
Remove the package / library "System.Numerics.Vectors" Find the package in the nuget manager "System.Numerics.Vectors"
Boom then fixet :)
That worked for me. Thank you!
I believe you will also see this without that NuGet though as we reference it in the .NET Standard Library. It is a bit unfortunate, but only a warning and doesn't cause any actual runtime issues.
Famous last words. It doesn't instill confidence if that is how the Xamarin team thinks of warnings.
So, I think I may have a working nuget here.
https://dev.azure.com/xamarin/public/_build/results?buildId=18036&view=artifacts&type=publishedArtifacts
After this you can remove the 2 references from your app System.Numerics and System.Numerics.Vectors.
This has a dependency on the System.Numerics.Vectors NuGet package and just an internal reference to System.Numerics and that seems to work well.
This is similar to what I recommended as the work around.
I see it is almost a year old issue. It still exists. In my case I don't even reference System.Numerics.Vectors anywhere in the solution. I have no idea how to fix it. I tried to reference it in some projects hoping it would resolve it but no. Here is the details for the issue in my case
21> There was a conflict between "System.Numerics.Vectors, Version=2.0.5.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" and "System.Numerics.Vectors, Version=4.1.3.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a". (TaskId:296) 21> "System.Numerics.Vectors, Version=2.0.5.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" was chosen because it was primary and "System.Numerics.Vectors, Version=4.1.3.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" was not. (TaskId:296) 21> References which depend on "System.Numerics.Vectors, Version=2.0.5.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" [C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\Common7\IDE\ReferenceAssemblies\Microsoft\Framework\MonoAndroid\v1.0\System.Numerics.Vectors.dll]. (TaskId:296) 21> C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\Common7\IDE\ReferenceAssemblies\Microsoft\Framework\MonoAndroid\v1.0\System.Numerics.Vectors.dll (TaskId:296) 21> Project file item includes which caused reference "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\Common7\IDE\ReferenceAssemblies\Microsoft\Framework\MonoAndroid\v1.0\System.Numerics.Vectors.dll". (TaskId:296) 21> System.Numerics.Vectors (TaskId:296) 21> References which depend on "System.Numerics.Vectors, Version=4.1.3.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" []. (TaskId:296) 21> C:\Users\Alex.nuget\packages\system.text.json\4.7.2\lib\netstandard2.0\System.Text.Json.dll (TaskId:296) 21> Project file item includes which caused reference "C:\Users\Alex.nuget\packages\system.text.json\4.7.2\lib\netstandard2.0\System.Text.Json.dll". (TaskId:296) 21> C:\Users\Alex.nuget\packages\system.text.json\4.7.2\lib\netstandard2.0\System.Text.Json.dll (TaskId:296) 21> C:\Users\Alex.nuget\packages\microsoft.extensions.dependencymodel\3.1.4\lib\netstandard2.0\Microsoft.Extensions.DependencyModel.dll (TaskId:296) 21> C:\Users\Alex.nuget\packages\microsoft.entityframeworkcore.sqlite.core\3.1.4\lib\netstandard2.0\Microsoft.EntityFrameworkCore.Sqlite.dll (TaskId:296) 21> C:\Misc\Project\Main\Application\MainApp\MainApp.Mobile\MainApp.Mobile\bin\Debug\netstandard2.1\MainApp.Mobile.dll (TaskId:296)
I believe that 16.7 has made significant progress on this as I no longer see it. https://developercommunity.visualstudio.com/content/problem/788505/xamarin-found-conflicts-between-different-versions.html