[Bug] Android app with shared Android resource lib crash with target API level 29 or 30

[zijianhuang]

Description

To have multiple Android applications sharing the same resources mostly images, there's an Android class library containing the resources and assets, referenced by each Android app project. This has been working well with Xamarin.Forms 4.1-4.5. However, with Xamarin.Forms 4.6, the Android app crashes during startup.

Steps to Reproduce

Repository at https://github.com/zijianhuang/xamarinforms4bugs is demonstrating good ones in branch master and bad ones in branch ResourcesInLib.

The master branch is with Xamarin.Forms 4.6 and Android app project that contains Resources. This is working well.

The ResourcesInLib branch is with Xamarin.Forms 4.6 and Android class project that contain Resources. When the target API level is 28 (Android 9), things are OK. When the target API level is 29 or 30, the app crashes during startup.

After checking out the ResourcesInLib branch, build and run it, things are looking OK with the target API level is 28 (Android 9). Then you change to target API level 29 or 30, then build and run on a device, the app crashes on startup.

Expected Behavior

The app runs normally showing a button and a label

Actual Behavior

Crash.

Basic Information

Visual Studio Professional 2019, v16.6.0

  <ItemGroup>
    <PackageReference Include="Xamarin.AndroidX.AppCompat.Resources">
      <Version>1.1.0</Version>
    </PackageReference>
    <PackageReference Include="Xamarin.Forms" Version="4.6.0.800" />
    <PackageReference Include="Xamarin.Google.Android.Material" Version="1.0.0" />
    <PackageReference Include="Xamarin.AndroidX.AppCompat" Version="1.1.0" />
    <PackageReference Include="Xamarin.AndroidX.Legacy.Support.V4" Version="1.0.0" />
    <PackageReference Include="Xamarin.AndroidX.CardView" Version="1.0.0" />
    <PackageReference Include="Xamarin.AndroidX.MediaRouter" Version="1.1.0" />
    <PackageReference Include="Xamarin.Forms.Visual.Material">
      <Version>4.6.0.800</Version>
    </PackageReference>
    <PackageReference Include="Xamarin.AndroidX.Migration" Version="1.0.6" />
  </ItemGroup>

Reproduction Link

https://github.com/zijianhuang/xamarinforms4bugs/tree/ResourcesInLib/

Remarks

Probably loosely related to issue #6327

[PureWeen]

This should be fixed by this PR

#10975