Missing `androidx.window.[extensions|sidecar]` warnings #6809

gmck · 2022-03-04T04:50:30Z

Android application type

Classic Xamarin.Android (MonoAndroid12.0, etc.)

Affected platform version

VS2022 17.2.0 Preview 1.0

Description

After upgrading all my nugets to the latest versions, the following are new warnings.

Severity	Code	Description	Project	File	Line	Suppression State
Warning		Found conflicts between different versions of "System.Numerics.Vectors" that could not be resolved.
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".
    "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.
    References which depend on "System.Numerics.Vectors, Version=2.0.5.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" [C:\Program Files\Microsoft Visual Studio\2022\Preview\Common7\IDE\ReferenceAssemblies\Microsoft\Framework\MonoAndroid\v1.0\System.Numerics.Vectors.dll].
        C:\Program Files\Microsoft Visual Studio\2022\Preview\Common7\IDE\ReferenceAssemblies\Microsoft\Framework\MonoAndroid\v1.0\System.Numerics.Vectors.dll
          Project file item includes which caused reference "C:\Program Files\Microsoft Visual Studio\2022\Preview\Common7\IDE\ReferenceAssemblies\Microsoft\Framework\MonoAndroid\v1.0\System.Numerics.Vectors.dll".
            System.Numerics.Vectors
    References which depend on "System.Numerics.Vectors, Version=4.1.3.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" [].
        C:\Users\gmcke\.nuget\packages\system.text.json\5.0.2\lib\netstandard2.0\System.Text.Json.dll
          Project file item includes which caused reference "C:\Users\gmcke\.nuget\packages\system.text.json\5.0.2\lib\netstandard2.0\System.Text.Json.dll".
            C:\Users\gmcke\.nuget\packages\system.text.json\5.0.2\lib\netstandard2.0\System.Text.Json.dll
            C:\Users\gmcke\.nuget\packages\xamarin.googleplayservices.safetynet\117.0.1.3\lib\monoandroid90\Xamarin.GooglePlayServices.SafetyNet.dll	OBDNowPros	C:\Program Files\Microsoft Visual Studio\2022\Preview\MSBuild\Current\Bin\amd64\Microsoft.Common.CurrentVersion.targets	2301	
Warning		Unable to find //manifest/application/uses-library at path: C:\Program Files (x86)\Android\android-sdk\platforms\android-31\optional\androidx.window.sidecar.jar	OBDNowPros	C:\ProjectsVS2022Preview\Android12Pros\OBDNowPro\obj\Release\120\android\AndroidManifest.xml		
Warning		Unable to find //manifest/application/uses-library at path: C:\Program Files (x86)\Android\android-sdk\platforms\android-31\optional\androidx.window.extensions.jar	OBDNowPros	C:\ProjectsVS2022Preview\Android12Pros\OBDNowPro\obj\Release\120\android\AndroidManifest.xml		
Warning		Missing class androidx.window.extensions.WindowExtensions (referenced from: androidx.window.extensions.embedding.ActivityEmbeddingComponent androidx.window.embedding.EmbeddingCompat$Companion.embeddingComponent() and 3 other contexts)	OBDNowPros	C:\ProjectsVS2022Preview\Android12Pros\OBDNowPro\R8		
Warning		XA4218: Unable to find //manifest/application/uses-library at path: C:\Program Files (x86)\Android\android-sdk\platforms\android-31\optional\androidx.window.sidecar.jar		 	0	
Warning		MSB3073: The command ""C:\Program Files (x86)\Android\android-sdk\platform-tools\adb" -s 1A141FDF600D7C uninstall -k "com.glmsoftware.obdnowpros"" exited with code 1.		 	0	
Warning		XA4218: Unable to find //manifest/application/uses-library at path: C:\Program Files (x86)\Android\android-sdk\platforms\android-31\optional\androidx.window.extensions.jar		 	0	
Warning		MSB3277: Found conflicts between different versions of "System.Numerics.Vectors" that could not be resolved.
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".
    "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.
    References which depend on "System.Numerics.Vectors, Version=2.0.5.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" [C:\Program Files\Microsoft Visual Studio\2022\Preview\Common7\IDE\ReferenceAssemblies\Microsoft\Framework\MonoAndroid\v1.0\System.Numerics.Vectors.dll].
        C:\Program Files\Microsoft Visual Studio\2022\Preview\Common7\IDE\ReferenceAssemblies\Microsoft\Framework\MonoAndroid\v1.0\System.Numerics.Vectors.dll
          Project file item includes which caused reference "C:\Program Files\Microsoft Visual Studio\2022\Preview\Common7\IDE\ReferenceAssemblies\Microsoft\Framework\MonoAndroid\v1.0\System.Numerics.Vectors.dll".
            System.Numerics.Vectors
    References which depend on "System.Numerics.Vectors, Version=4.1.3.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" [].
        C:\Users\gmcke\.nuget\packages\system.text.json\5.0.2\lib\netstandard2.0\System.Text.Json.dll
          Project file item includes which caused reference "C:\Users\gmcke\.nuget\packages\system.text.json\5.0.2\lib\netstandard2.0\System.Text.Json.dll".
            C:\Users\gmcke\.nuget\packages\system.text.json\5.0.2\lib\netstandard2.0\System.Text.Json.dll
            C:\Users\gmcke\.nuget\packages\xamarin.googleplayservices.safetynet\117.0.1.3\lib\monoandroid90\Xamarin.GooglePlayServices.SafetyNet.dll		 	0

Also attaching the MS Build log. Do you need anything else from me?

Could you please advise about the following, where it comes from etc?
Missing class androidx.window.extensions.WindowExtensions (referenced from: androidx.window.extensions.embedding.ActivityEmbeddingComponent

Build04032022.zip

Steps to Reproduce

N/A

Did you find any workaround?

The app deploys and runs just fine.

Relevant log output

No response

The text was updated successfully, but these errors were encountered:

MagicAndre1981 · 2022-03-04T07:39:06Z

I've already reported this some time ago via #6375, the app still works for me even if you see the messages.

tipa · 2022-03-06T15:43:33Z

I also see those XA4218 warnings that I think have nor seen before in VS 17.0
Also, deploying an app to the simulator becomes a gamble. 90% of the times when I change my .xml files (e.g. styles.xml) and try to build+deploy the app, if fails with:

========== Build: 1 succeeded, 0 failed, 0 up-to-date, 0 skipped ==========
========== Deploy: 0 succeeded, 1 failed, 0 skipped ==========

MagicAndre1981 · 2022-03-07T08:46:58Z

I also see those XA4218 warnings that I think have nor seen before in VS 17.0

yes, this is new, but I also get it in VS2019 16.11.10 and started since last AndroidX Nuget updates from end of last week.

jonathanpeppers · 2022-03-07T14:44:33Z

@jpobst / @moljac would you know if there is something new about these libraries?

Warning		Unable to find //manifest/application/uses-library at path: C:\Program Files (x86)\Android\android-sdk\platforms\android-31\optional\androidx.window.sidecar.jar	OBDNowPros	C:\ProjectsVS2022Preview\Android12Pros\OBDNowPro\obj\Release\120\android\AndroidManifest.xml		
Warning		Unable to find //manifest/application/uses-library at path: C:\Program Files (x86)\Android\android-sdk\platforms\android-31\optional\androidx.window.extensions.jar	OBDNowPros	C:\ProjectsVS2022Preview\Android12Pros\OBDNowPro\obj\Release\120\android\AndroidManifest.xml		
Warning		Missing class androidx.window.extensions.WindowExtensions (referenced from: androidx.window.extensions.embedding.ActivityEmbeddingComponent androidx.window.embedding.EmbeddingCompat$Companion.embeddingComponent() and 3 other contexts)	OBDNowPros	C:\ProjectsVS2022Preview\Android12Pros\OBDNowPro\R8		
Warning		XA4218: Unable to find //manifest/application/uses-library at path: C:\Program Files (x86)\Android\android-sdk\platforms\android-31\optional\androidx.window.sidecar.jar		 	0	
Warning		XA4218: Unable to find //manifest/application/uses-library at path: C:\Program Files (x86)\Android\android-sdk\platforms\android-31\optional\androidx.window.extensions.jar

Would these be something new where you define <uses-library> for these in your AndroidManifest.xml? We might need to add some build-time support for this.

dellis1972 · 2022-03-07T14:59:35Z

Also, deploying an app to the simulator becomes a gamble. 90% of the times when I change my .xml files (e.g. styles.xml) and try to build+deploy the app, if fails with:
========== Build: 1 succeeded, 0 failed, 0 up-to-date, 0 skipped ==========
========== Deploy: 0 succeeded, 1 failed, 0 skipped ==========

We are tracking this in #6652. The IDE team have an internal ticket which they are working on. I'll keep #6652 as up to date as I can.

moljac · 2022-03-07T15:18:08Z

@conceptdev Would you be so kind and help? Do you have any experience with this?

@jpobst / @moljac would you know if there is something new about these libraries?

Warning		Unable to find //manifest/application/uses-library at path: C:\Program Files (x86)\Android\android-sdk\platforms\android-31\optional\androidx.window.sidecar.jar	OBDNowPros	C:\ProjectsVS2022Preview\Android12Pros\OBDNowPro\obj\Release\120\android\AndroidManifest.xml		
Warning		Unable to find //manifest/application/uses-library at path: C:\Program Files (x86)\Android\android-sdk\platforms\android-31\optional\androidx.window.extensions.jar	OBDNowPros	C:\ProjectsVS2022Preview\Android12Pros\OBDNowPro\obj\Release\120\android\AndroidManifest.xml		
Warning		Missing class androidx.window.extensions.WindowExtensions (referenced from: androidx.window.extensions.embedding.ActivityEmbeddingComponent androidx.window.embedding.EmbeddingCompat$Companion.embeddingComponent() and 3 other contexts)	OBDNowPros	C:\ProjectsVS2022Preview\Android12Pros\OBDNowPro\R8		
Warning		XA4218: Unable to find //manifest/application/uses-library at path: C:\Program Files (x86)\Android\android-sdk\platforms\android-31\optional\androidx.window.sidecar.jar		 	0	
Warning		XA4218: Unable to find //manifest/application/uses-library at path: C:\Program Files (x86)\Android\android-sdk\platforms\android-31\optional\androidx.window.extensions.jar

Would these be something new where you define <uses-library> for these in your AndroidManifest.xml? We might need to add some build-time support for this.

jpobst · 2022-03-07T19:27:56Z

I cannot find these types in any of Google's AndroidX packages:

androidx.window.extensions.WindowExtensions
androidx.window.extensions.embedding.ActivityEmbeddingComponent

But the latest releases of AndroidX do now generally have a dependency on AndroidX.Window (via Xamarin.AndroidX.SlidingPaneLayout).

conceptdev · 2022-03-07T20:07:56Z

It's my understanding that the sidecar and extensions code are what we ship on device (ie. Surface Duo), to provide the OEM-specific implementation of the Window Manager dual-screen/foldable API surface. Other OEMS (like Samsung) would ship their own packages (again, in their OS).

Android native (Kotlin/Java) apps that consume AndroidX Window Manager do not reference these libraries via gradle. Not sure where these warnings are coming from in Xamarin.Android.

On maven.google.com I don't see corresponding packages there either.

jonathanpeppers · 2022-03-07T20:37:45Z

@jpobst do any of the .aar files contain an AndroidManifest.xml file with new <uses-library/> entries?

jpobst · 2022-03-07T20:40:16Z

Hmm, yes. The androidx.window.window.aar AndroidManifest.xml contains:

<application>
    <uses-library
        android:name="androidx.window.extensions"
        android:required="false" />
    <uses-library
        android:name="androidx.window.sidecar"
        android:required="false" />
</application>

jonathanpeppers · 2022-03-07T20:43:38Z

Previously these would map to .jar files in C:\Program Files (x86)\Android\android-sdk\platforms\android-32\optional:

So I don't understand where these come from now...

gmck · 2022-03-07T23:04:39Z

@jonathanpeppers, @dellis1972, @jpobst

From the comments above, it would seem that the androidx.window stuff is being addressed, however, there has been no mention of the conflict between the two versions of System.Numeric.Vectors or has it been addressed in another issue?

jonathanpeppers · 2022-03-08T03:40:36Z

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".

The solution for this one is to use .NET 6 unfortunately. The problem here is that Mono has a different version of this assembly, and some package is trying to bring in a newer version from NuGet.

lilunxm12 · 2022-05-12T07:54:22Z

For my project, upgrade Xamarin.AndroidX.Legacy.Support.V13 to newest 1.0.0.13 triggers the error, revert back to 1.0.0.12 and errors disappear.

dooferorg · 2022-05-24T17:55:11Z

Confirmed that version 1.0.0.12 on the Xamarin.AndroidX.Legacy.SupportV4 also makes this error go away. 1.0.0.13 has quite the breaking change for a point release.

jpobst · 2022-05-24T18:12:21Z

Which error are you referring to? This issue lists 2 new warnings.

lilunxm12 · 2022-05-26T04:06:54Z

Which error are you referring to? This issue lists 2 new warnings.

For me it's the two XA4218 missing jars. androidx.window.sidecar.jar and androidx.window.extensions.jar

gmck · 2022-05-26T07:32:08Z

@jpobst
I still get all the same warnings as to when I first reported it. I'm now using VS2022 17.3.0 Prev 1.1

moljac · 2022-05-26T11:12:52Z

For me it's the two XA4218 missing jars. androidx.window.sidecar.jar and androidx.window.extensions.jar

Sec! Missing androidx.window.sidecar.jar???

Official google maven does not mention androidx.window.sidecar artifact (neither jar or aar):

https://maven.google.com/web/index.html?q=androidx.window#androidx.window

if you step out of Microsoft world there are few pointers (though there is MS FTE working on the issue):

In

https://groups.google.com/a/chromium.org/g/java/c/bf9if0l3VJ4?pli=1

there is explanation (seems like internal classes and interfaces, kotlin vs java and R8/proguard tooling) and horrible workaround.

Seems that problem is 2+ years old. Seems our tooling just got better with surfacing warnings too.

moljac · 2022-05-26T11:20:59Z

Also related;

dotnet/android-libraries#542

moljac · 2022-05-26T11:24:42Z

@jonathanpeppers @jpobst
From AndroidX issue

TL&DR;

where would:

sun.misc.Signal
sun.misc.SignalHandler
java.lang.ClassValue
java.lang.instrument.ClassFileTransformer

come from???

dooferorg · 2022-05-26T13:52:34Z

Which error are you referring to? This issue lists 2 new warnings.

It was the ones I googled for that got me to this thread.

Warning Unable to find //manifest/application/uses-library at path: C:\Program Files (x86)\Android\android-sdk\platforms\android-31\optional\androidx.window.sidecar.jar Warning Unable to find //manifest/application/uses-library at path: C:\Program Files (x86)\Android\android-sdk\platforms\android-31\optional\androidx.window.extensions.jar

These were not files I intentionally included.

So something changed between the 1.0.0.12 and 1.0.0.13 releases that caused this since reverting made the error go away.

jpobst · 2022-05-26T14:08:03Z

I still get all the same warnings as to when I first reported it. I'm now using VS2022 17.3.0 Prev 1.1

@gmck

These warnings are coming from AndroidX (Xamarin.AndroidX.Window), VS updates will not fix it.

dooferorg · 2022-05-26T14:09:34Z

Ok, those are just warnings, not errors. It is suggested to ignore them.

Not good practice to simply 'ignore warnings'. Not how I like to write my programs. Thank you for your opinion.

jpobst · 2022-05-26T14:19:07Z

@jonathanpeppers

It comes from Xamarin.AndroidX.Window.

Most Android apps will eventually depend on this package through a long enough dependency chain:

Microsoft.Maui.Dependencies
-> Xamarin.AndroidX.Navigation.Fragment
  -> Xamarin.AndroidX.SlidingPaneLayout
    -> Xamarin.AndroidX.Window

jonathanpeppers · 2022-05-26T14:22:15Z

What about window-extensions, though? It seems like r8 wants that .jar to avoid some warnings? If that file was added to the AndroidExternalJavaLibrary item group, it would go away.

We'd have to change something in Xamarin.Android to fix our warning, it could probably check the AndroidExternalJavaLibrary item group to skip the warning.

jpobst · 2022-05-26T14:29:45Z

What about window-extensions, though?

It might fix one of the warnings, but not the sidecar one. The "jar" is also called window-extensions-1.0.0-alpha01.aar so I'm not sure if that will work?

Maybe we should be looking at the required attribute and not warning if it's false?

<uses-library
        android:name="androidx.window.extensions"
        android:required="false" />

Granted, that's why it's only a warning and not an error.

jonathanpeppers · 2022-05-26T14:37:29Z

The required="false", means it is a library only present on some devices (OEMs put it there).

The example is android.car.jar:

Your app might use that but work on phones, and it would only be present on embedded Android Auto devices.

jpobst · 2022-05-26T14:41:41Z

Maybe when these libraries are stable Google will add them to /optional?

dellis1972 · 2022-05-26T14:44:55Z

For apps that end up with this in their manifest:

<application>
    <uses-library
        android:name="androidx.window.extensions"
        android:required="false" />
    <uses-library
        android:name="androidx.window.sidecar"
        android:required="false" />
</application>

Maybe we should not emit the warning when we cannot find the library in optional if required is false ?

moljac · 2022-05-26T15:57:15Z

@jonathanpeppers

We could remove these warnings, but I'm not sure that's the right path.

I would not do that. Warnings are not caused by us.

These libraries are passed to d8/r8 as a "reference" and they don't get included on the app. They are normally libraries that OEMs provide on certain devices. If we had them we could solve the XA4218 warning, and the d8/r8 warning.

I found one library:

https://mvnrepository.com/artifact/androidx.window/window-extensions

This leads to correct official location

https://maven.google.com/web/index.html?q=androidx.window#androidx.window:window-extensions

Are we supposed to be using this somehow? It's only in alpha.

No. It was bound when androidx.window.* was in preview for Screen Duo work, but not touched/updated afterwards.

https://github.com/xamarin/AndroidX/blob/main/config.json#L1325-L1348

see my comment:

#6809 (comment)

workgroupengineering · 2022-09-05T09:41:44Z

the warnings are still present in Visual Studio Version 17.3.0 Preview 6.0

moljac · 2022-09-05T15:18:46Z

the warnings are still present in Visual Studio Version 17.3.0 Preview 6.0

Thanks for the feedback, but Visual Studio version has nothing to do with this issue.

See: #6809 (comment)

rvalitov · 2023-03-20T17:17:00Z

I still get all the same warnings as to when I first reported it. I'm now using VS2022 17.3.0 Prev 1.1

@gmck

These warnings are coming from AndroidX (Xamarin.AndroidX.Window), VS updates will not fix it.

I have the same warnings after upgrading the project to a newer Xamarin version using VS 17.5.2. I didn't have the Xamarin.AndroidX.Window package installed but still I got the errors. After installing this package just to test there were no changes in the build output log.

See https://learn.microsoft.com/en-us/xamarin/android/errors-and-warnings/xa4218 and dotnet/android#6809 (comment).

ivmirx · 2024-06-10T22:18:48Z

Both warnings are still present after migrating a Xamarin.Android app to .NET 8

Fixes dotnet#6809 We have an issues where if a library manifest contains the following element and the file dos NOT exist in `android-sdk\platforms\android-XX\optional` we get an XA4218 warning. ```xml <uses-library android:name="androidx.window.sidecar" android:required="false" /> ``` This is the warning. ``` Warning XA4218: Unable to find //manifest/application/uses-library at path: android-sdk\platforms\android-31\optional\androidx.window.sidecar.jar obj\Release\120\android\AndroidManifest.xml ``` So the work around this issue if the `required` attribute is NOT `true` we should ignore the warning. If the library is `required`` or the `required` attribute is NOT specified we should revert to to the current behavior. This warnings can come up if people use vendor specific .aar files. The libraries they are referring too will never exist in the `sdk` `optional` folder.

gmck added Area: App+Library Build Issues when building Library projects or Application projects. needs-triage Issues that need to be assigned. labels Mar 4, 2022

gmck assigned dellis1972 and jonathanpeppers Mar 4, 2022

jonathanpeppers removed the needs-triage Issues that need to be assigned. label Mar 7, 2022

jonathanpeppers added this to the Under Consideration milestone Mar 7, 2022

jonathanpeppers mentioned this issue Apr 18, 2022

The "MonoAOTCompiler" task was not given a value for the required parameter "CompilerBinaryPath" #6936

Open

moljac mentioned this issue May 26, 2022

Warnings in output at _CompileToDalvik dotnet/android-libraries#542

Open

gmck mentioned this issue May 28, 2022

VS2020 17.3.0 Prev 1.1 Add new item dialog - useless. #7048

Closed

jpobst changed the title ~~VS2022 17.2.0 Preview 1.0 – Warnings not seen before.~~ Missing androidx.window.[extensions|sidecar] warnings Sep 14, 2022

tranb3r mentioned this issue Oct 25, 2022

R8 : warning : Missing class androidx.window.extensions.WindowExtensions dotnet/maui#10901

Closed

Susko3 added a commit to Susko3/osu-framework that referenced this issue Feb 5, 2024

Disable irrelevant warning

3ae9537

See https://learn.microsoft.com/en-us/xamarin/android/errors-and-warnings/xa4218 and dotnet/android#6809 (comment).

This was referenced Jun 13, 2024

[Epic] Opened Microsoft issues tracking unoplatform/uno#982

Open

docs: Add explanation for XA4218 unoplatform/uno#17154

Merged

This was referenced Jun 14, 2024

docs: Add explanation for XA4218 (backport #17154) unoplatform/uno#17156

Merged

docs: Add explanation for XA4218 (backport #17154) unoplatform/uno#17157

Merged

dellis1972 mentioned this issue Jul 8, 2024

Missing androidx.window.[extensions|sidecar] warnings #9085

Merged

dellis1972 closed this as completed in #9085 Jul 18, 2024

dellis1972 closed this as completed in 45855b8 Jul 18, 2024

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Missing `androidx.window.[extensions|sidecar]` warnings #6809

Missing `androidx.window.[extensions|sidecar]` warnings #6809

Missing androidx.window.[extensions|sidecar] warnings #6809

Missing androidx.window.[extensions|sidecar] warnings #6809

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Android application type

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Description

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Did you find any workaround?

Relevant log output

Missing `androidx.window.[extensions|sidecar]` warnings #6809

Missing `androidx.window.[extensions|sidecar]` warnings #6809