My function has an argument `error: @Composable (() -> Unit)? = null` i.e. a rendering lambda of...

# compose

[Jan Skrasek]

My function has an argument error: @Composable (() -> Unit)? = null i.e. a rendering lambda of the error or a null.
I want to animate that rendering, so I need to postpone "nulling" the error until the hide animation finishes. How can I remember the composable result?

Box(
    modifier = Modifier
        .alpha(errorAlpha.value)
) {
    if (error != null) {
        error()
    }
}

[Jan Skrasek]

This did the trick for me:

var errorState by remember { mutableStateOf(error) }
if (error == null) {
    LaunchedEffect(this) {
        delay(AnimationDuration.toLong())
        errorState = null
    }
} else {
    errorState = error
}