PlaceholderState

TextPlaceholder

/**
 * This sample applies a placeholder and placeholderShimmer directly over a single composable.
 *
 * Note that the modifier ordering is important, the placeholderShimmer must be before the
 * placeholder in the modifier chain - otherwise the shimmer will be drawn underneath the
 * placeholder and will not be visible.
 */
@OptIn(ExperimentalWearMaterialApi::class)
@Composable
fun TextPlaceholder() {
    var labelText by remember { mutableStateOf("") }
    val chipPlaceholderState = rememberPlaceholderState { labelText.isNotEmpty() }
    Text(
        text = labelText,
        overflow = TextOverflow.Ellipsis,
        textAlign = TextAlign.Center,
        modifier =
            Modifier.width(90.dp)
                .placeholderShimmer(chipPlaceholderState)
                .placeholder(chipPlaceholderState),
    )
    // Simulate content loading
    LaunchedEffect(Unit) {
        delay(3000)
        labelText = "A label"
    }
    if (!chipPlaceholderState.isShowContent) {
        LaunchedEffect(chipPlaceholderState) { chipPlaceholderState.startPlaceholderAnimation() }
    }
}