.NET MAUI Project referencing .NET MAUI Class library from a solution produces XA1018 error on build

[jslachta]

Description

Hello.

Let us have a solution that has two projects. The first project is .NET MAUI App which references the second project - the .NET MAUI Class library (for example, .NET MAUI library/plugin and a sample project). In this case, the build fails with the following error:

error XA1018: Specified AndroidManifest file does not exist

You can spot this error on VS 17.1.0 Preview 2.0, Microsoft.Maui.* 6.0.101-preview.11.2349.

Steps to Reproduce

1. Create the .NET MAUI Class library from Visual Studio.
2. Within the same solution, create .NET MAUI App
3. Create a project reference from .NET MAUI App to the .NET MAUI Class library
4. (optional - better for repro) reduce target platforms to Android only
5. Build
6. error "XA1018: Specified AndroidManifest file does not exist" occurs

Version with bug

Preview 11

Last version that worked well

Unknown/Other

Affected platforms

Android

Affected platform versions

all android versions

Did you find any workaround?

I have not found any workaround yet.

Relevant log output

Build started...
1>------ Build started: Project: MauiLib1, Configuration: Debug Any CPU ------
1>You are using a preview version of .NET. See: https://aka.ms/dotnet-core-preview
1>You are using a preview version of .NET. See: https://aka.ms/dotnet-core-preview
1>MauiLib1 -> D:\Work\src\MauiLib1\MauiLib1\bin\Debug\net6.0\MauiLib1.dll
1>You are using a preview version of .NET. See: https://aka.ms/dotnet-core-preview
1>MauiLib1 -> D:\Work\src\MauiLib1\MauiLib1\bin\Debug\net6.0-windows10.0.19041\MauiLib1.dll
1>MauiLib1 -> D:\Work\src\MauiLib1\MauiLib1\bin\Debug\net6.0-android\MauiLib1.dll
2>------ Build started: Project: MauiApp1, Configuration: Debug Any CPU ------
2>C:\Program Files\dotnet\packs\Microsoft.Android.Sdk.Windows\31.0.101-preview.11.117\tools\Xamarin.Android.Common.targets(511,3): error XA1018: Specified AndroidManifest file does not exist: D:\Work\src\MauiLib1\MauiApp1\MauiApp1\AndroidManifest.xml.
2>Done building project "MauiApp1.csproj" -- FAILED.
========== Build: 1 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

[mattscheffer]

No repro with 32208.182.main. Both projects built correct. See build log below

1>C:\Program Files\dotnet\packs\Microsoft.iOS.Windows.Sdk\15.2.301-preview.13.2\tools\msbuild\iOS\Xamarin.Messaging.Apple.targets(31,3): warning : There is no available connection to the Mac. Task 'VerifyXcodeVersion' will not be executed
1>MauiLib1 -> C:\Users\test\source\repos\3978\MauiLib1\bin\Debug\net6.0-maccatalyst\MauiLib1.dll
1>MauiLib1 -> C:\Users\test\source\repos\3978\MauiLib1\bin\Debug\net6.0-ios\MauiLib1.dll
1>MauiLib1 -> C:\Users\test\source\repos\3978\MauiLib1\bin\Debug\net6.0\MauiLib1.dll
1>MauiLib1 -> C:\Users\test\source\repos\3978\MauiLib1\bin\Debug\net6.0-windows10.0.19041\MauiLib1.dll
1>Done building project "MauiLib1.csproj".
1>MauiLib1 -> C:\Users\test\source\repos\3978\MauiLib1\bin\Debug\net6.0-android\MauiLib1.dll
2>------ Build started: Project: 3978, Configuration: Debug Any CPU ------
2>3978 -> C:\Users\test\source\repos\3978\3978\bin\Debug\net6.0-android\3978.dll
========== Build: 2 succeeded, 0 failed, 0 up-to-date, 0 skipped ==========