Anyone else having problems using a ComposeView wh...

# compose

[harry248]

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

[harry248]

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]

@Andrey Kulikov

[Andrey Kulikov]

Interesting. could you please file a bug?

[harry248]

Sure, will do so tomorrow...

[Halil Ozercan]

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

[carbaj0]

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]

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]]

that is correct

[harry248]

@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]

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]

Done... https://issuetracker.google.com/issues/167581934

[Waseef Akhtar]

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