Is there a way to “store” a composable function as...

# compose

[Stefano Rodriguez]

Is there a way to “store” a composable function as a method of a data class/interface and call it programmatically from another composable function?
I’m getting a weird java.lang.NoSuchMethodError when trying to invoke the render method

interface TestScreen<State: Any> {
    val name: String
    val initialState: State
    @Composable
    fun render(state: State, setState: (State) -> Unit)
}

[alorma]

yes

[alorma]

https://github.com/alorma/Compose-Debug-Drawer/blob/main/drawer-base/src/main/java/com/alorma/drawer_base/DebugModule.kt

[Stefano Rodriguez]

looks really similar to what I’m trying to achieve, how do you call the build function? You just use it normally? Perhaps the problem is related to the generic State type and I have somehow to erase it

[Adam Powell]

Can you post the full error you're seeing?

[Stefano Rodriguez]

Untitled

[alorma]

i call it from inside a composable function

[Stefano Rodriguez]

yeah, me too

[alorma]

https://github.com/alorma/Compose-Debug-Drawer/blob/main/drawer-base/src/main/java/com/alorma/drawer_base/DrawerModule.kt#L50

[Stefano Rodriguez]

I’m just doing this:

@Composable
fun PreviewBox(
    selectedTestScreen: TestScreen<out Any>,
) {
        selectedTestScreen.doRender()
}

[alorma]

yes, it looks like it don0t know the type, try with *

[Stefano Rodriguez]

it’s the same

[Zach Klippenstein (he/him) [MOD]]

Does your method implementation also have the Composable annotation?

[Stefano Rodriguez]

Yes

[Stefano Rodriguez]

@Adam Powell So i discovered the issue. It’s not related to the generics but to the fact that the interface is declared in another module w.r.t. where I use it

[Adam Powell]

Was the compose compiler plugin not enabled for one of the modules?