KotlinReflectionNotSupportedError in Compose Preview

Question

I have defined the Kotlin reflection dependency in my Gradle file as follows:

implementation "org.jetbrains.kotlin:kotlin-reflect:$kotlin_version"

Within the App, reflection works just fine. However, when I use reflection within a Composable preview:

@Composable
@Preview
fun MyComposablePreviewUsingReflection() {
    val foo = SomeClass::class.sealedSubclasses.size
}

I get the kotlin.jvm.KotlinReflectionNotSupportedError. When I build the App and use reflection in a normal Composable (i.e., not a preview), reflection works just fine.

Is there a way to get reflection working in a Compose preview?

ntsk · Accepted Answer · 2023-03-12 11:27:58Z

1

This problem will be fixed in Android Studio Flamingo. https://issuetracker.google.com/issues/240601093

answered Mar 12, 2023 at 11:27

ntsk

963 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Jason Robinson Over a year ago

As of Flamingo 2022.2.1 Patch 1, it is "fixed" but doesn't appear to be functional, at least for sealed classes. isSealed returns false, and sealedSubclasses is always empty.

Collectives™ on Stack Overflow

KotlinReflectionNotSupportedError in Compose Preview

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related