net8.0-ios / net8.0-android: mtouchi18n / mandroidi18n options do not apply?

[kiddkaffeine]

Description

Per documentation, adding flags like

Reproduction Steps

1. Create net8.0-ios or net8.0-android project.
2. Add cjk on iOS or cjk on Android
3. Attempt to use Shift JIS encoding, e.g.: System.Text.Encoding.GetEncoding(932)

Expected behavior

Shift JIS encoding returned.

Actual behavior

Exception thrown that encoding is not supported.

Regression?

Unknown, but possible based on workaround linked in documentation this worked in earlier .net releases and documentation is out of date.

Known Workarounds

Following https://www.nuget.org/packages/System.Text.Encoding.CodePages/#readme-body-tab and adding this:

// Register the CodePages encoding provider at application startup to enable using single and double byte encodings.
Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);

Seems to fix.

Configuration

No response

Other information

No response

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[filipnavara]

That is by design. The old options are no longer supported in modern .NET. Encoding.RegisterProvider(CodePagesEncodingProvider.Instance); is the correct and documented way to achieve it.

[kiddkaffeine]

Thanks for the feedback. I'm not sure if you guys control this or not but it seems like a lot of still maintained documentation refers to this, for example:

https://learn.microsoft.com/en-us/dotnet/android/building-apps/build-properties#mandroidi18n

[tarekgh]

The behavior is documented in https://learn.microsoft.com/en-us/dotnet/api/system.text.encoding.getencoding?view=net-8.0#overloads. I'll let @matouskozak @vitek-karas @mdh1418 comment on the docs https://learn.microsoft.com/en-us/dotnet/android/building-apps/build-properties#mandroidi18n.

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