preferredFrameRate

SetFrameRateSample

@Sampled
@Composable
fun SetFrameRateSample() {
    var targetAlpha by remember { mutableFloatStateOf(1f) }
    val context = LocalContext.current
    val activity: Activity? = findOwner(context)
    DisposableEffect(activity) {
        activity?.window?.frameRateBoostOnTouchEnabled = false
        onDispose { activity?.window?.frameRateBoostOnTouchEnabled = true }
    }

    val alpha by
        animateFloatAsState(targetValue = targetAlpha, animationSpec = tween(durationMillis = 5000))

    Column(modifier = Modifier.size(300.dp)) {
        Button(
            onClick = { targetAlpha = if (targetAlpha == 1f) 0.2f else 1f },
            modifier =
                Modifier.testTag("frameRateTag")
                    .background(LocalContentColor.current.copy(alpha = alpha)),
        ) {
            Text(
                text = "Click Me for alpha change with 30 Hz frame rate",
                color = LocalContentColor.current.copy(alpha = alpha), // Adjust text alpha
                modifier = Modifier.preferredFrameRate(30f),
            )
        }
    }
}

SetFrameRateCategorySample

@Sampled
@Composable
fun SetFrameRateCategorySample() {
    var targetAlpha by remember { mutableFloatStateOf(1f) }
    val context = LocalContext.current
    val activity: Activity? = findOwner(context)
    DisposableEffect(activity) {
        activity?.window?.frameRateBoostOnTouchEnabled = false
        onDispose { activity?.window?.frameRateBoostOnTouchEnabled = true }
    }

    val alpha by
        animateFloatAsState(targetValue = targetAlpha, animationSpec = tween(durationMillis = 5000))

    Column(modifier = Modifier.size(300.dp)) {
        Button(
            onClick = { targetAlpha = if (targetAlpha == 1f) 0.2f else 1f },
            modifier =
                Modifier.testTag("frameRateTag")
                    .background(LocalContentColor.current.copy(alpha = alpha)),
        ) {
            Text(
                text = "Click Me for alpha change with frame rate category High",
                color = LocalContentColor.current.copy(alpha = alpha),
                modifier = Modifier.preferredFrameRate(FrameRateCategory.High),
            )
        }
    }
}