FilledTextField

@Composable
fun TextFieldWithHelperMessage() {
    var text by rememberSaveable { mutableStateOf("") }

    Column {
        TextField(
            value = text,
            onValueChange = { text = it },
            label = { Text("Label") }
        )
        Text(
            text = "Helper message",
            color = MaterialTheme.colors.onSurface.copy(alpha = ContentAlpha.medium),
            style = MaterialTheme.typography.caption,
            modifier = Modifier.padding(start = 16.dp)
        )
    }
}

@Composable
fun TextFieldWithHideKeyboardOnImeAction() {
    val keyboardController = LocalSoftwareKeyboardController.current
    var text by rememberSaveable { mutableStateOf("") }
    TextField(
        value = text,
        onValueChange = { text = it },
        label = { Text("Label") },
        keyboardOptions = KeyboardOptions(imeAction = ImeAction.Done),
        keyboardActions = KeyboardActions(
            onDone = {
                keyboardController?.hide()
                // do something here
            }
        )
    )
}