Make `$(AndroidLinkResources)` able to be the default for MAUI projects

[jonathanpeppers]

Android application type

Android for .NET (net6.0-android, etc.)

Affected platform version

.NET 7

Description

Context: dotnet/maui#7038

We found some Telerik and/or other vendor libraries would fail due to this code in SkiaSharp:

https://github.com/mono/SkiaSharp/blob/4a687a87b86f127ccc23116ee410dcb5df8fca63/source/SkiaSharp.Views/SkiaSharp.Views.Android/SKCanvasView.cs#L48-L61

So if we don't finish #6427 for .NET 7, we could consider:

1. Fix SKCanvasView so it doesn't use a Styleable int[].
2. Give an error message at build time if the AndroidLinkResources linker step encounters a int[]
3. Try turning on AndroidLinkResources=true by default for MAUI projects

Steps to Reproduce

1. Use SKCanvasView in a project
2. Build with -c Release -p:AndroidLinkResources=true

Did you find any workaround?

Don't use $(AndroidLinkResources)

Relevant log output

No response

[tipa]

I was hitting the same problem today (not using a 3rd party library) when subclassing a View and using ObtainStyledAttributes.
Attached a simple repo project: AndroidApp2.zip

Would appreciate if a fix could be found

[jonathanpeppers]

@tipa can you share the error message you got? Probably a crash at runtime?

[tipa]

With the demo project attached I first get this exception (only when enabling all exceptions in the VS Exception Settings Window):
System.BadImageFormatException: 'Could not resolve field token 0x0400000b'

When I then click "Continue" in the debugger I get this exception:
System.NotSupportedException: 'Could not activate JNI Handle 0x7fe1003920 (key_handle 0x73cc609) of Java type 'crc641149b9fe658fbe8e/MyView' as managed type 'AndroidApp2.MyView'.'

They are crashes at runtime, yes