ExpandableContent.kt

@Composable
fun ExpandableContent(
    visible: Boolean = true,
    initialVisibility: Boolean = false
) {
     val enterTransition = remember {
        expandVertically(
            expandFrom = Alignment.Top,
            animationSpec = tween(EXPANSTION_TRANSITION_DURATION)
        ) + fadeIn(
            initialAlpha = 0.3f,
            animationSpec = tween(EXPANSTION_TRANSITION_DURATION)
        )
    }
    val exitTransition = remember {
        shrinkVertically(
            // Expand from the top.
            shrinkTowards = Alignment.Top,
            animationSpec = tween(EXPANSTION_TRANSITION_DURATION)
        ) + fadeOut(
            // Fade in with the initial alpha of 0.3f.
            animationSpec = tween(EXPANSTION_TRANSITION_DURATION)
        )
    }
    AnimatedVisibility(
        visible = visible,
        initiallyVisible = initialVisibility,
        enter = enterTransition,
        exit = exitTransition
    ) {
        Column(modifier = Modifier.padding(8.dp)) {
            Spacer(modifier = Modifier.heightIn(100.dp))
            Text(
                text = "Expandable content here",
                textAlign = TextAlign.Center
            )
        }

    }
}