Current behavior

When creating a brand new application via the Uno Solution templates blank image assets are created. The filenames of these images are no longer compatible with Xamarin.Android.

Expected behavior

1. File -> New Uno Solution
2. Compile Android Application
3. Compilation success

How to reproduce it (as minimally and precisely as possible)

1. File -> New Uno Solution
2. Compile Android Application
3. Compilation errors

Environment

Nuget Package: master

Package Version(s):

Affected platform(s):

• iOS
• Android
• WebAssembly
• Windows
• Build tasks

Visual Studio

• 2017 (version: )
• 2019 (version: )
• for Mac (version: )

Relevant plugins

• Resharper (version: )

Anything else we need to know?

https://developercommunity.visualstudio.com/content/problem/671088/regression-invalid-file-name-it-must-contain-only.html

Hi Geoffrey,

This is exactly the issue [1] I linked to in my previous comment. The Uno platform (for some reason) is including those content files into the AndroidResource item group. This is done by this code in the Uno platform itself.

uno/src/SourceGenerators/Uno.UI.Tasks/Content/Uno.UI.Tasks.targets

Line 36 in 1c9b258

<ResourcesGenerationTask_v0 Resources="@(PRIResource)"

The good news is that those items DO have a LogicalName metadata item which does have a valid filename. So once the fix above is released the app will compile as normal. As I stated in my previous comment this will only effect projects using aapt2. So to work around this issue you can put the following in your csproj

<AndroidUseAapt2>false</AndroidUseAapt2>

or use

/p:AndroidUseAapt2=false

on the command line.

[1] dotnet/android@e0145d1#diff-f8b51db87afcb0cc430594eb134bf41a