Error trying to run .NET 9 Android

[Saccomani]

I just install the package and try to run on my emulator, its showing this message, if I remove, the build works!

Error in obj/Debug/net9.0-android/lp/216/jl/classes.jar:androidx/work/CoroutineWorker$getForegroundInfoAsync$1.class:
Type androidx.work.CoroutineWorker$getForegroundInfoAsync$1 is defined multiple times: obj/Debug/net9.0-android/lp/216/jl/classes.jar:androidx/work/CoroutineWorker$getForegroundInfoAsync$1.class, obj/Debug/net9.0-android/lp/235/jl/classes.jar:androidx/work/CoroutineWorker$getForegroundInfoAsync$1.class
Compilation failed
java.lang.RuntimeException: com.android.tools.r8.CompilationFailedException: Compilation failed to complete, origin: obj/Debug/net9.0-android/lp/216/jl/classes.jar
androidx/work/CoroutineWorker$getForegroundInfoAsync$1.class
at com.android.tools.r8.internal.to.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:131)
at com.android.tools.r8.D8.main(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:5)
Caused by: com.android.tools.r8.CompilationFailedException: Compilation failed to complete, origin: obj/Debug/net9.0-android/lp/216/jl/classes.jar:androidx/work/CoroutineWorker$getForegroundInfoAsync$1.class
at Version.fakeStackEntry(Version_8.5.35.java:0)
at com.android.tools.r8.T.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:5)
at com.android.tools.r8.internal.to.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:82)
at com.android.tools.r8.internal.to.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:32)
at com.android.tools.r8.internal.to.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:31)
at com.android.tools.r8.internal.to.b(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:2)
at com.android.tools.r8.D8.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:41)
at com.android.tools.r8.D8.b(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:13)
at com.android.tools.r8.D8.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:39)
at com.android.tools.r8.internal.to.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:118)
... 1 more
Caused by: com.android.tools.r8.internal.g: Type androidx.work.CoroutineWorker$getForegroundInfoAsync$1 is defined multiple times: obj/Debug/net9.0-android/lp/216/jl/classes.jar:androidx/work/CoroutineWorker$getForegroundInfoAsync$1.class, obj/Debug/net9.0-android/lp/235/jl/classes.jar:androidx/work/CoroutineWorker$getForegroundInfoAsync$1.class
at com.android.tools.r8.internal.x50.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:21)
at com.android.tools.r8.internal.LY.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:54)
at com.android.tools.r8.internal.LY.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:10)
at java.base/java.util.concurrent.ConcurrentHashMap.merge(ConcurrentHashMap.java:2056)
at com.android.tools.r8.internal.LY.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:6)
at com.android.tools.r8.graph.p4$a.d(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:6)
at com.android.tools.r8.dex.c.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:95)
at com.android.tools.r8.dex.c.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:44)
at com.android.tools.r8.dex.c.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:9)
at com.android.tools.r8.D8.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:44)
at com.android.tools.r8.D8.d(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:17)
at com.android.tools.r8.D8.c(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:73)
at com.android.tools.r8.internal.to.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:28)
... 6 more
O diretório 'obj/Debug/net9.0-android/lp/216' é de 'androidx.work.work-runtime.aar'.
O diretório 'obj/Debug/net9.0-android/lp/235' é de 'androidx.work.work-runtime-ktx.aar'.

[chrmeehansr]

Were you able to resolve? I've been struggling with a similar output. While I'm learning how much of a challenge the transitive dependencies are.. it's infuriating. Here's my output for comparison and others. Targeting .net9.0 but also couldn't get past this with .net8.0. I've tried tracing and modifying the various dependency builds with no success. Any help if anyone has any thoughts would be greatly appreciated.

I've also tried the guidance here.. https://www.mauiexpert.it/admob-for-maui-made-easy/ and added the user-messaging-platform-2.0.0.aar as noted.

1>MSBUILD : java.exe error JAVA0000: Error in obj\Debug\net9.0-android\lp\383\jl\classes.jar:com/google/android/gms/internal/measurement/zzfs.class:
1>MSBUILD : java.exe error JAVA0000: Type com.google.android.gms.internal.measurement.zzfs is defined multiple times: obj\Debug\net9.0-android\lp\383\jl\classes.jar:com/google/android/gms/internal/measurement/zzfs.class, obj\Debug\net9.0-android\lp\384\jl\classes.jar:com/google/android/gms/internal/measurement/zzfs.class
1>MSBUILD : java.exe error JAVA0000: Compilation failed
1>MSBUILD : java.exe error JAVA0000: java.lang.RuntimeException: com.android.tools.r8.CompilationFailedException: Compilation failed to complete, origin: obj\Debug\net9.0-android\lp\383\jl\classes.jar
1>MSBUILD : java.exe error JAVA0000: com/google/android/gms/internal/measurement/zzfs.class
1>MSBUILD : java.exe error JAVA0000: at com.android.tools.r8.internal.to.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:131)
1>MSBUILD : java.exe error JAVA0000: at com.android.tools.r8.D8.main(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:5)
1>MSBUILD : java.exe error JAVA0000: Caused by: com.android.tools.r8.CompilationFailedException: Compilation failed to complete, origin: obj\Debug\net9.0-android\lp\383\jl\classes.jar:com/google/android/gms/internal/measurement/zzfs.class
1>MSBUILD : java.exe error JAVA0000: at Version.fakeStackEntry(Version_8.5.35.java:0)
1>MSBUILD : java.exe error JAVA0000: at com.android.tools.r8.T.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:5)
1>MSBUILD : java.exe error JAVA0000: at com.android.tools.r8.internal.to.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:82)
1>MSBUILD : java.exe error JAVA0000: at com.android.tools.r8.internal.to.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:32)
1>MSBUILD : java.exe error JAVA0000: at com.android.tools.r8.internal.to.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:31)
1>MSBUILD : java.exe error JAVA0000: at com.android.tools.r8.internal.to.b(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:2)
1>MSBUILD : java.exe error JAVA0000: at com.android.tools.r8.D8.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:41)
1>MSBUILD : java.exe error JAVA0000: at com.android.tools.r8.D8.b(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:13)
1>MSBUILD : java.exe error JAVA0000: at com.android.tools.r8.D8.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:39)
1>MSBUILD : java.exe error JAVA0000: at com.android.tools.r8.internal.to.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:118)
1>MSBUILD : java.exe error JAVA0000: ... 1 more
1>MSBUILD : java.exe error JAVA0000: Caused by: com.android.tools.r8.internal.g: Type com.google.android.gms.internal.measurement.zzfs is defined multiple times: obj\Debug\net9.0-android\lp\383\jl\classes.jar:com/google/android/gms/internal/measurement/zzfs.class, obj\Debug\net9.0-android\lp\384\jl\classes.jar:com/google/android/gms/internal/measurement/zzfs.class
1>MSBUILD : java.exe error JAVA0000: at com.android.tools.r8.internal.x50.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:21)
1>MSBUILD : java.exe error JAVA0000: at com.android.tools.r8.internal.LY.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:54)
1>MSBUILD : java.exe error JAVA0000: at com.android.tools.r8.internal.LY.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:10)
1>MSBUILD : java.exe error JAVA0000: at java.base/java.util.concurrent.ConcurrentHashMap.merge(ConcurrentHashMap.java:2056)
1>MSBUILD : java.exe error JAVA0000: at com.android.tools.r8.internal.LY.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:6)
1>MSBUILD : java.exe error JAVA0000: at com.android.tools.r8.graph.p4$a.d(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:6)
1>MSBUILD : java.exe error JAVA0000: at com.android.tools.r8.dex.c.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:95)
1>MSBUILD : java.exe error JAVA0000: at com.android.tools.r8.dex.c.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:44)
1>MSBUILD : java.exe error JAVA0000: at com.android.tools.r8.dex.c.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:9)
1>MSBUILD : java.exe error JAVA0000: at com.android.tools.r8.D8.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:44)
1>MSBUILD : java.exe error JAVA0000: at com.android.tools.r8.D8.d(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:17)
1>MSBUILD : java.exe error JAVA0000: at com.android.tools.r8.D8.c(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:73)
1>MSBUILD : java.exe error JAVA0000: at com.android.tools.r8.internal.to.a(R8_8.5.35_9c55004e7c41a17b1ed47c4e1952cb6778b3dac6afb6afc113a2737c3cde13e0:28)
1>MSBUILD : java.exe error JAVA0000: ... 6 more
1>MSBUILD : java.exe error JAVA0000: Directory 'obj\Debug\net9.0-android\lp\383' is from 'play-services-measurement-base.aar'.
1>MSBUILD : java.exe error JAVA0000: Directory 'obj\Debug\net9.0-android\lp\384' is from 'play-services-measurement.aar'.

[moljac]

Please check

dotnet/android-libraries#764