Debug type has to be changed in release mode

[SurajImmanuel]

Description

After upgrading to MAUI 9 , DebugType had to be changed to portable and AndroidLinkMode has to be set to false since it trims the class of nuget packages that i added and it throws class not found exception.

Property which worked in MAUI 8 ,

<PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Release|net9.0-android|AnyCPU'">
      		<AndroidPackageFormat>apk</AndroidPackageFormat>
      		<WarningLevel>1</WarningLevel>
      		<DebugType>pdbonly</DebugType>
      		<Optimize>true</Optimize>
      		<OutputPath>bin\Release\</OutputPath>
      		<DefineConstants>TRACE</DefineConstants>
      		<ErrorReport>prompt</ErrorReport>
      		<WarningLevel>4</WarningLevel>
      		<AndroidLinkMode>
      		<EmbedAssembliesIntoApk>true</EmbedAssembliesIntoApk>
      		<DebugSymbols>False</DebugSymbols>
      		<AndroidUseSharedRuntime>false</AndroidUseSharedRuntime>
      		<JavaMaximumHeapSize>4G</JavaMaximumHeapSize>
      		<Debugger>.Net (Xamarin)</Debugger>
      		<AotAssemblies>false</AotAssemblies>
      		<EnableLLVM>false</EnableLLVM>
      		<BundleAssemblies>false</BundleAssemblies>
      		<AndroidEnableMultiDex>true</AndroidEnableMultiDex>
      		<AndroidSupportedAbis>armeabi-v7a;x86_64;x86;arm64-v8a</AndroidSupportedAbis>
      		<AndroidEnableProfiledAot>false</AndroidEnableProfiledAot>
      		<AndroidLinkTool>r8</AndroidLinkTool>
      		<RunAOTCompilation>False</RunAOTCompilation>
      	</PropertyGroup>

current nuget packages that i have ,

<ItemGroup>
	<PackageReference Include="CommunityToolkit.Maui" Version="11.1.0" />
	<PackageReference Include="CommunityToolkit.Maui.Core" Version="11.1.0" />
	<PackageReference Include="CommunityToolkit.Maui.Markup" Version="5.1.0" />
	<PackageReference Include="CommunityToolkit.Mvvm" Version="8.4.0" />
	<PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="9.0.2" />
	<PackageReference Include="Microsoft.Identity.Client" Version="4.69.1" />
	<PackageReference Include="Microsoft.IdentityModel.Logging" Version="8.6.0" />
	<PackageReference Include="Microsoft.IdentityModel.LoggingExtensions" Version="8.6.0" />
	<PackageReference Include="Microsoft.Maui.Controls.Core" Version="9.0.40" />
	<PackageReference Include="Microsoft.Maui.Core" Version="9.0.40" />
	<PackageReference Include="Microsoft.Maui.Controls" Version="9.0.40" />
	<PackageReference Include="Microsoft.Maui.Essentials" Version="9.0.40" />
	<PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
	<PackageReference Include="OnScreenSizeMarkup.Maui" Version="3.0.18" />
	<PackageReference Include="Plugin.CurrentActivity" Version="2.1.0.4" />
	<PackageReference Update="Microsoft.Maui.Controls.Compatibility" Version="9.0.40" />
	<PackageReference Include="Scandit.DataCapture.Barcode.Maui" Version="7.1.0" />
	<PackageReference Include="Scandit.DataCapture.Core.Maui" Version="7.1.0" />
	<PackageReference Include="SkiaSharp.Extended.UI.Maui" Version="2.0.0" />
	<PackageReference Include="Zebra.Printer.SDK" Version="3.0.3337" />
	<PackageReference Include="ZXing.Net.Maui" Version="0.4.0" />
	<PackageReference Include="ZXing.Net.Maui.Controls" Version="0.4.0" />
</ItemGroup>

Steps to Reproduce

1. Use the Item group and Property group in csproj
2. Run the project in release mode .

Link to public reproduction project repository

No response

Version with bug

9.0.50 SR5

Is this a regression from previous behavior?

Yes, this used to work in .NET MAUI

Last version that worked well

8.0.100 SR10

Affected platforms

Android

Affected platform versions

No response

Did you find any workaround?

No response

Relevant log output

[jonathanpeppers]

Looking at your settings confuses me:

<PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Release|net9.0-android|AnyCPU'">
      		<AndroidPackageFormat>apk</AndroidPackageFormat>
      		<WarningLevel>1</WarningLevel>
      		<DebugType>pdbonly</DebugType>
      		<Optimize>true</Optimize>
      		<OutputPath>bin\Release\</OutputPath>
      		<DefineConstants>TRACE</DefineConstants>
      		<ErrorReport>prompt</ErrorReport>
      		<WarningLevel>4</WarningLevel>
      		<AndroidLinkMode>
      		<EmbedAssembliesIntoApk>true</EmbedAssembliesIntoApk>
      		<DebugSymbols>False</DebugSymbols>
      		<AndroidUseSharedRuntime>false</AndroidUseSharedRuntime>
      		<JavaMaximumHeapSize>4G</JavaMaximumHeapSize>
      		<Debugger>.Net (Xamarin)</Debugger>
      		<AotAssemblies>false</AotAssemblies>
      		<EnableLLVM>false</EnableLLVM>
      		<BundleAssemblies>false</BundleAssemblies>
      		<AndroidEnableMultiDex>true</AndroidEnableMultiDex>
      		<AndroidSupportedAbis>armeabi-v7a;x86_64;x86;arm64-v8a</AndroidSupportedAbis>
      		<AndroidEnableProfiledAot>false</AndroidEnableProfiledAot>
      		<AndroidLinkTool>r8</AndroidLinkTool>
      		<RunAOTCompilation>False</RunAOTCompilation>
      	</PropertyGroup>

So many of these values are wrong/old from Xamarin, can you delete the entire block and rely on the defaults instead?

Then, let's find out if this is the actual culprit:

<AndroidLinkTool>r8</AndroidLinkTool>

it throws class not found exception.

Share adb logcat output of the crash, such as the log.txt in:

adb logcat -d > log.txt

• https://docs.microsoft.com/en-us/xamarin/android/deploy-test/debugging/android-debug-log

[dotnet-policy-service]

Hi @SurajImmanuel. We have added the "need-info" label to this issue, which indicates that we have an open question for you before we can take further action. This issue will be closed automatically in 7 days if we do not hear back from you by then - please feel free to re-open it if you come back to this issue after that time.