Any news about this?

I haven't heard anything about this. And must admit I haven't tried anything anymore.

I was for an experimental application, these struggles didn't help.

I have the same problem with my app, there are obsolete warnings everywhere because the Compat classes are missing. I think the maven package reference is old, they have to update it.

@leandroconsiglio I have absolutly no idea how this package is created, but I guess it's generated somehow. Wouldn't we be able to just re-generate it with a new version?

@xamarin can you give us some insights?

@svrooij Thanks for the feedback!

And I am sorry for delays, but I maintain AndroidX and GooglePlayServices/Firebase/MLKit bindings + tons of dependencies.

I have absolutly no idea how this package is created, but I guess it's generated somehow. Wouldn't we be able to just re-generate it with a new version?

You need need to clone and do cake build. It is not trivial, but it is not too hacky. Yes docs about build are not up to date I know.

When submitting issues versions would help a lot. Each of the nuget has its own version:

• Xamarin.AndroidX.Preference latest is 1.2.0.1
• Xamarin.AndroidX.Leanback.Preference latest is 1.0.0.13

It would be good to know which of those do you use.

You can paste ProjectReference from *.csproj for those here. That helps a lot.

Notes:

androidx.preference.preference

find ./generated/androidx.preference.preference/ -type f -name "*Compat.cs"

found in both folders

./generated/androidx.preference.preference//obj/Release/net6.0-android/generated/src/
./generated/androidx.preference.preference//obj/Release/monoandroid12.0/generated/src/

AndroidX.Preference.MultiSelectListPreferenceDialogFragmentCompat.cs
AndroidX.Preference.ListPreferenceDialogFragmentCompat.cs
AndroidX.Preference.PreferenceHeaderFragmentCompat.cs
AndroidX.Preference.SwitchPreferenceCompat.cs
AndroidX.Preference.PreferenceDialogFragmentCompat.cs
AndroidX.Preference.PreferenceFragmentCompat.cs
AndroidX.Preference.EditTextPreferenceDialogFragmentCompat.cs

androidx.leanback.leanback-preference

find ./generated/androidx.leanback.leanback-preference/ -type f -name "*Compat.cs"

results:

No *Compat types in api.xml.class-parse.

TODO: decompile

These are the regular preferences screens. Not those specially for Leanback (ANDROID TV).

These are the regular preferences screens. Not those specially for Leanback (ANDROID TV).

yes. I know. Leanback stuff was not found. Why? No idea. (Yet)

So these packages seem to be not updated to the latest version, if I'm understanding correctly?
https://github.com/svrooij/AndroidX/blob/c6ee82cc0aafe7005fc36e1fde536f3d60633908/config.json#L629-L644

For my understanding the cake script checks some xml file where all the android maven packages are stored and then checks there respective version if it's the same with the version of the generated files? If not the same it downloads the new version and generates the bindings for it?

It seems leanback.preference is missing in this file

// Master list of all the packages in the repo:
// https://dl.google.com/dl/android/maven2/master-index.xml

but it's present in the other file

@svrooij

Advice: images are not searchable, selectable (for copy paste) and slows investigation down.

Try like this:

https://maven.google.com/web/index.html?q=leanback

you have several groups:

• androidx.leanback
  this is needed
• com.android.support
  old (AndroidSupport) legacy, history

The problem is that for some reason Compat classes were removed from androidx.leanback:leanback-preference

@moljac
I'm using the lastest version of Xamarin.AndroidX.Leanback.Preference (1.0.0.13)

The compat classes were added in leanback-preference-1.1.0 and Xamarin is using 1.0.0, that's why they are missing.
Is it possible that the package can be upgraded to 1.1.0? Although there is no stable version yet, maybe a beta version?

@leandroconsiglio thanks for the pointer! It seems the version containing these extra classess it not released as a none beta version. https://maven.google.com/web/index.html#androidx.leanback:leanback-preference

Would it be possible to some how force it to create a beta nuget containing the 1.1.0-rc01 version? Or maybe even the 1.2.0-alpha02.

Ive tried building it locally, but since the generation isn't documented I cannot get it to work. Struggling with error after error.

========================================
libs-native
========================================
Warning: unrecognized type name: platform. Did you mean archives?
Warning: Unable to create an instance of com.android.repository.impl.generated.v1.TypeDetails
java.lang.InstantiationException
        at java.base/jdk.internal.reflect.InstantiationExceptionConstructorAccessorImpl.newInstance(InstantiationExceptionConstructorAccessorImpl.java:48)
        at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
        at com.sun.xml.bind.v2.ClassFactory.create0(ClassFactory.java:132)

closing this issue

androidx.leanback:leanback-preference is still preview.

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

Please open issue when the package becomes stable. Thanks

This package does not seem te be coming out of preview....
Can't you make an exception? Or at least show how we can use the tools to generate such a package ourself, in case we want to use a beta feature anyway.

Yes is still in preview, but the all classes without Compat have [Obsolete] warning everywhere.

The 18 month old package is still in alpha02 status, hence my request to remove the alpha02 part. Then we will hopefully finally get a release of this package in nuget. https://issuetracker.google.com/issues/276765055

I tried updating the config.json myself with the following, but then building just fails.

      {
        "groupId": "androidx.leanback",
        "artifactId": "leanback-preference",
        "version": "1.2.0-alpha02",
        "nugetVersion": "1.2.0.0-alpha2",
        "nugetId": "Xamarin.AndroidX.Leanback.Preference",
        "dependencyOnly": false
      },

PS C:\Users\stephan\source\repos\AndroidX> dotnet cake --target=binderate
The 'tool' directive is attempting to install the 'Cake.CoreCLR' package 
without specifying a package version number.  
More information on this can be found at https://cakebuild.net/docs/writing-builds/reproducible-builds/ 
It's not recommended, but you can explicitly override this warning 
by configuring the Skip Package Version Check setting to true 
(i.e. command line parameter "--settings_skippackageversioncheck=true", 
environment variable "CAKE_SETTINGS_SKIPPACKAGEVERSIONCHECK=true", 
read more about configuration at https://cakebuild.net/docs/running-builds/configuration/)
The assembly 'Cake.FileHelpers, Version=5.0.0.0, Culture=neutral, PublicKeyToken=null' 
is referencing an older version of Cake.Core (2.0.0). 
The 'tool' directive is attempting to install the 'Cake.CoreCLR' package 
without specifying a package version number.  
More information on this can be found at https://cakebuild.net/docs/writing-builds/reproducible-builds/ 
It's not recommended, but you can explicitly override this warning 
by configuring the Skip Package Version Check setting to true 
(i.e. command line parameter "--settings_skippackageversioncheck=true", 
environment variable "CAKE_SETTINGS_SKIPPACKAGEVERSIONCHECK=true", 
read more about configuration at https://cakebuild.net/docs/running-builds/configuration/)
The assembly 'Cake.MonoApiTools, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null' 
is referencing an older version of Cake.Core (0.33.0). 
For best compatibility it should target Cake.Core version 2.0.0.
C:/Users/stephan/source/repos/AndroidX/build.cake(559,20): warning CS0219: The variable 'xml_namespace_name' is assigned but its value is never used
Error: Object reference not set to an instance of an object.