DisclosureGroup.kt

var expanded by remember { mutableStateOf(false) }

DisclosureGroup(
    label = { Text("Label") },
    onClick = { expanded = !expanded },
    modifier = Modifier.padding(16.dp),
    isExpanded = expanded
) {
    Greeting("Android")
}

@Composable
fun Greeting(name: String) {
    Column {
        Text(text = "Hello $name!")
        Text(text = "Hello $name!")
        Text(text = "Hello $name!")
    }
}

@Composable
fun DisclosureGroup(
    modifier: Modifier = Modifier,
    label: @Composable () -> Unit,
    onClick: () -> Unit,
    isExpanded: Boolean,
    content: @Composable () -> Unit
) {
    Column(modifier = modifier.fillMaxWidth()) {
        Row(
            verticalAlignment = Alignment.CenterVertically,
            modifier = Modifier
                .fillMaxWidth()
                .clickable { onClick() }) {
            Box(modifier = Modifier.weight(1.0f)) {
                label()
            }
            Icon(
                if (isExpanded) Icons.Default.KeyboardArrowUp
                else Icons.Default.KeyboardArrowDown,
                contentDescription = if (isExpanded) "Collapse" else "Expand"
            )
        }
        AnimatedVisibility(isExpanded) {
            content()
        }
    }
}