Dexing Error when using Appsflyer 6.16.0 on Unity 2022.3.37f1

[BollmanHutch]

Having updated to Appsflyer 6.16.0 I receive a Dexing error when building for Android.
Ive imported Appsflyer into an empty project and encounter the same issue.
It occurs when when mainTemplate.Grade is active in the project.

Repro Steps:

1. Create an empty project or Use Existing
2. Import Appsflyer 6.16.0
3. Enable mainTemplate.gradle
4. Build & Observe Error

Error:

Picked up JAVA_TOOL_OPTIONS: -Dfile.encoding=UTF-8
Note: /Users/XXX/Documents/SourceTree/Project/Project/Library/Bee/Android/Prj/IL2CPP/Gradle/unityLibrary/src/main/java/com/unity3d/player/UnityPlayerActivity.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
ERROR:/Users/XXX/.gradle/caches/transforms-3/3ef65e31ceb024a249035a3568eed99d/transformed/jetified-af-android-sdk-6.16.0-runtime.jar: D8: com.android.tools.r8.internal.YI0: Sealed classes are not supported as program classes

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':launcher:mergeExtDexRelease'.
> Could not resolve all files for configuration ':launcher:releaseRuntimeClasspath'.
   > Failed to transform af-android-sdk-6.16.0.aar (com.appsflyer:af-android-sdk:6.16.0) to match attributes {artifactType=android-dex, asm-transformed-variant=NONE, dexing-enable-desugaring=true, dexing-is-debuggable=false, dexing-min-sdk=24, org.gradle.category=library, org.gradle.dependency.bundling=external, org.gradle.libraryelements=aar, org.gradle.status=release, org.gradle.usage=java-runtime}.
      > Execution failed for DexingNoClasspathTransform: /Users/XXX/.gradle/caches/transforms-3/3ef65e31ceb024a249035a3568eed99d/transformed/jetified-af-android-sdk-6.16.0-runtime.jar.
         > Error while dexing.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org/

BUILD FAILED in 1m 45s

UnityEditor.GenericMenu:CatchMenu (object,string[],int) (at /Users/bokken/build/output/unity/unity/Editor/Mono/GUI/GenericMenu.cs:127)

Additional Details:
minSDKTarget 24
TargetSDK 33
Unity Version: 2022.3.37f1
EDMU: 1.2.183

Temporary Solution:
I am able to get around the error by including the following into my settingsTemplate.gradle file

buildscript {
        repositories {
            mavenCentral()
            maven {
                url = uri("https://storage.googleapis.com/r8-releases/raw")
            }
        }
        dependencies {
            classpath("com.android.tools:r8:8.2.26")
        }
    }

Full settingsTemplate:

pluginManagement {
    buildscript {
        repositories {
            mavenCentral()
            maven {
                url = uri("https://storage.googleapis.com/r8-releases/raw")
            }
        }
        dependencies {
            classpath("com.android.tools:r8:8.2.26")
        }
    }
}

include ':launcher', ':unityLibrary'
**INCLUDES**

dependencyResolutionManagement {
    repositoriesMode.set(RepositoriesMode.PREFER_SETTINGS)
    repositories {
        **ARTIFACTORYREPOSITORY**
        google()
        mavenCentral()
// Android Resolver Repos Start
        def unityProjectPath = $/file:///**DIR_UNITYPROJECT**/$.replace("\\", "/")
        mavenLocal()
// Android Resolver Repos End
        flatDir {
            dirs "${project(':unityLibrary').projectDir}/libs"
        }
    }
}

Full mainTemplate:

apply plugin: 'com.android.library'
**APPLY_PLUGINS**

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
// Android Resolver Dependencies Start
    implementation 'com.android.installreferrer:installreferrer:2.1' // Assets/AppsFlyer/Editor/AppsFlyerDependencies.xml:10
    implementation 'com.appsflyer:af-android-sdk:6.16.0' // Assets/AppsFlyer/Editor/AppsFlyerDependencies.xml:6
    implementation 'com.appsflyer:unity-wrapper:6.16.0' // Assets/AppsFlyer/Editor/AppsFlyerDependencies.xml:8
// Android Resolver Dependencies End
**DEPS**}

// Android Resolver Exclusions Start
android {
  packagingOptions {
      exclude ('/lib/arm64-v8a/*' + '*')
      exclude ('/lib/armeabi/*' + '*')
      exclude ('/lib/mips/*' + '*')
      exclude ('/lib/mips64/*' + '*')
      exclude ('/lib/x86/*' + '*')
      exclude ('/lib/x86_64/*' + '*')
  }
}
// Android Resolver Exclusions End
android {
    ndkPath "**NDKPATH**"

    compileSdkVersion **APIVERSION**
    buildToolsVersion '**BUILDTOOLS**'

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_11
        targetCompatibility JavaVersion.VERSION_11
    }

    defaultConfig {
        minSdkVersion 24
        targetSdkVersion 33
        ndk {
            abiFilters **ABIFILTERS**
        }
        versionCode **VERSIONCODE**
        versionName '**VERSIONNAME**'
        consumerProguardFiles 'proguard-unity.txt'**USER_PROGUARD**
    }

    lintOptions {
        abortOnError false
    }

    aaptOptions {
        noCompress = **BUILTIN_NOCOMPRESS** + unityStreamingAssets.tokenize(', ')
        ignoreAssetsPattern = "!.svn:!.git:!.ds_store:!*.scc:!CVS:!thumbs.db:!picasa.ini:!*~"
    }**PACKAGING_OPTIONS**
}
**IL_CPP_BUILD_SETUP**
**SOURCE_BUILD_SETUP**
**EXTERNAL_SOURCES**

[github-actions]

👋 Hi @BollmanHutch and Thank you for reaching out to us.
In order for us to provide optimal support, please submit a ticket to our support team at [email protected].
When submitting the ticket, please specify:

• ✅ your AppsFlyer sign-up (account) email
• ✅ app ID
• ✅ production steps
• ✅ logs
• ✅ code snippets
• ✅ and any additional relevant information.

[thw0609]

I also have the same error, how can I fix it?

[BollmanHutch]

Current work around thats worked for me:
Enable settingsTemplate in project settings
Add this to pluginmanagement at the top:

buildscript {
        repositories {
            mavenCentral()
            maven {
                url = uri("https://storage.googleapis.com/r8-releases/raw")
            }
        }
        dependencies {
            classpath("com.android.tools:r8:8.2.26")
        }
    }

Your full pluinmanagement section will look something like this:

pluginManagement {
    repositories {
        **ARTIFACTORYREPOSITORY**
        gradlePluginPortal()
        google()
        mavenCentral()
    }
    buildscript {
        repositories {
            mavenCentral()
            maven {
                url = uri("https://storage.googleapis.com/r8-releases/raw")
            }
        }
        dependencies {
            classpath("com.android.tools:r8:8.2.26")
        }
    }
}

[ge-af]

Hi all,

Quick update:
We manage to reproduce this on v6.16.0 and we identify the following observations:

This is a bug in R8 that already solved by Google (ref: here)
There are two solutions:

1. Update the AGP version to 8.2.0 and above.
2. Set a external newer dependency of R8 to override the AGP bundled version

buildscript {
        repositories {
            mavenCentral()
            maven {
                url = uri("https://storage.googleapis.com/r8-releases/raw")
            }
        }
        dependencies {
            classpath("com.android.tools:r8:8.2.26")
        }
    }

This is due to the fact that we introduced sealed classes in v6.16.0 and thus you need to update the AGP version to the mentioned versions above.
Thanks.