I am trying to pass a test instance of one of my data classes into one of my composables in a previe...

# compose

[Joseph Hawkes-Cates]

I am trying to pass a test instance of one of my data classes into one of my composables in a preview and I’m getting java.lang.NoClassDefFoundError: Could not initialize class... whenever I try to create the data class instance within my preview composable function. Has anyone else run into this before?

[Joseph Hawkes-Cates]

The code is essentially like this:

@Preview("preview")
@Composable
fun Preview() {
   val data = SomeDataClass(field1 = "value", field2 = "value")
   MyScreenComposable(data = data)
}

This throws a NoClassDefFoundError within the Preview Error pane. It compiles fine through Gradle.

[Joseph Hawkes-Cates]

The NoClassDefFoundError is saying it can’t find “SomeDataClass”

[Abhinav Suthar]

I think clean build will fix this issue

[Joseph Hawkes-Cates]

I tried that and still had the issue. I ended up just refactoring my composable so I could just pass primitives to it instead of the entire data class instance