I'm working with `SnapshotStateMap<String, Any&...

# compose

[Lilly]

I'm working with SnapshotStateMap<String, Any> and storing the value in a state object:

// viewmodel content

private val state: SnapshotStateMap<String, Any> = mutableStateMapOf()
var myState by mutableStateOf(StateObject(state.getValue("key")))

@Immutable
data class StateObject(val value: Any)

I'm changing the values by bubbling up a onValueChange event that accesses state like state["key"] = newValue. But when I use for example a Slider composable and onValueChange is triggered, the Slider does not reflect the change, although I can print the new values. I guess storing the value in a state object as intermediate step is the problem. Is this intended or do I miss something here?

[natario1]

You probably want to use derivedStateOf.

val keyState by remember(state) {
    derivedStateOf { StateObject(state.getValue("key")) }
}

Assuming you really need this intermediate step.