Anyone else having problems using a ComposeView while enabli

Question

Anyone else having problems using a ComposeView while enabling minifcation R8 Proguard I am getting the following exception see thread

harry248 · Answer

kotlin reflect jvm internal KotlinReflectionInternalError Property javaClass JVM signature getJavaClass Ljava lang Object Ljava lang Class not resolved in file class kotlin jvm JvmClassMappingKt at kotlin reflect jvm internal KDeclarationContainerImpl findPropertyDescriptor SourceFile 87 at kotlin reflect jvm internal KPropertyImpl$ descriptor$1 invoke SourceFile 102 at kotlin reflect jvm internal KPropertyImpl$ descriptor$1 invoke SourceFile 27 at kotlin reflect jvm internal ReflectProperties$LazySoftVal invoke SourceFile 92 at kotlin reflect jvm internal KPropertyImpl getDescriptor SourceFile 105 at kotlin reflect jvm internal KPropertyImpl toString SourceFile 126 at kotlin jvm internal PropertyReference toString SourceFile 71 at java lang String valueOf String java 2924 at java lang StringBuilder append StringBuilder java 132 at androidx compose ui platform DisposableUiSavedStateRegistryKt DisposableUiSavedStateRegistry SourceFile 66 at androidx compose ui platform DisposableUiSavedStateRegistryKt DisposableUiSavedStateRegistry SourceFile 44 at androidx compose ui platform AndroidAmbientsKt ProvideAndroidAmbients SourceFile 87 at androidx compose ui platform WrappedComposition$setContent$1$1 invoke SourceFile 272 at androidx compose ui platform WrappedComposition$setContent$1$1 invoke Unknown Source 17 at androidx compose runtime internal ComposableLambda invoke SourceFile 143 at androidx compose runtime internal ComposableLambda invoke Unknown Source 17 at androidx compose runtime ComposerKt invokeComposable SourceFile 2684 at androidx compose runtime Composer composeInitial SourceFile 1851 at androidx compose runtime Recomposer composeInitial$runtime release SourceFile 243 at androidx compose runtime CompositionImpl setContent SourceFile 110 at androidx compose ui platform WrappedComposition$setContent$1 invoke SourceFile 262 at androidx compose ui platform WrappedComposition$setContent$1 invoke Unknown Source 3 at androidx compose ui platform AndroidComposeView setOnViewTreeOwnersAvailable SourceFile 497 at androidx compose ui platform WrappedComposition setContent SourceFile 254 at androidx compose ui platform WrappedComposition onStateChanged SourceFile 303 at androidx lifecycle LifecycleRegistry$ObserverWithState dispatchEvent SourceFile 354 at androidx lifecycle LifecycleRegistry forwardPass SourceFile 265 at androidx lifecycle LifecycleRegistry sync SourceFile 307 at androidx lifecycle LifecycleRegistry moveToState SourceFile 148 at androidx lifecycle LifecycleRegistry handleLifecycleEvent SourceFile 134 at androidx fragment app FragmentViewLifecycleOwner handleLifecycleEvent SourceFile 62 at androidx fragment app Fragment restoreViewState SourceFile 631 at androidx fragment app Fragment restoreViewState SourceFile 2945 at androidx fragment app Fragment performActivityCreated SourceFile 2936 at androidx fragment app FragmentStateManager activityCreated SourceFile 577 at androidx fragment app FragmentManager moveToState SourceFile 1329 at androidx fragment app FragmentManager addAddedFragments SourceFile 2392 at androidx fragment app FragmentManager executeOpsTogether SourceFile 2137 at androidx fragment app FragmentManager removeRedundantOperationsAndExecute SourceFile 2061 at androidx fragment app FragmentManager execPendingActions SourceFile 1957 at androidx fragment app FragmentManager$5 run SourceFile 496 at android os Handler handleCallback Handler java 938 at android os Handler dispatchMessage Handler java 99 at android os Looper loop Looper java 223 at android app ActivityThread main ActivityThread java 7656 at java lang reflect Method invoke Native Method at com android internal os RuntimeInit$MethodAndArgsCaller run RuntimeInit java 592 at com android internal os ZygoteInit main ZygoteInit java 947

Adam Powell · Answer

< Andrey Kulikov>

Andrey Kulikov · Answer

Interesting could you please file a bug

harry248 · Answer

Sure will do so tomorrow

Halil Ozercan · Answer

I also got a similar error when I used `coerceIn` or any other extension function for that matter inside a `object DragObserver` function

carbaj0 · Answer

```com android tools r8 errors b Space characters in SimpleName Float$arg 0$call Size$fun $get intrinsicSize$$get$val intrinsicSize$class $no name provided$$val a$fun ImagePainterSample are not allowed prior to DEX version 040```

Adam Powell · Answer

for that particular trace I believe we have a fix already in < Leland Richardson G > to confirm You can work around it by giving your anonymous `object` a name if I recall

Leland Richardson [G] · Answer

that is correct

harry248 · Answer

< Andrey Kulikov> Unfortunately I am not able to reproduce the bug outside the context of the specific app which is rather complex I will keep looking for the anomaly causing the issue

Andrey Kulikov · Answer

could you please file it anyway I took a look on the sources and seems like we can just stop using the property which was being missing just to be sure to not affect anyone else in a similar way

harry248 · Answer

Done <https issuetracker google com issues 167581934>

Waseef Akhtar · Answer

I have a similar issue even though I have minification disabled Anyway we can work around it