LinearProgressIndicator

Component in Material 3 Compose

Progress indicators express an unspecified wait time or display the duration of a process.

Last updated: 2024-10-22 13:47

Installation

dependencies {
   implementation("androidx.compose.material3:material3:1.4.0-alpha02")
}

Overloads

@Deprecated(
    message =
        "Use the overload that takes `gapSize` and `drawStopIndicator`, see " +
            "`LegacyLinearProgressIndicatorSample` on how to restore the previous behavior",
    replaceWith =
        ReplaceWith(
            "LinearProgressIndicator(progress, modifier, color, trackColor, strokeCap, " +
                "gapSize, drawStopIndicator)"
        ),
    level = DeprecationLevel.HIDDEN
)
@OptIn(ExperimentalMaterial3Api::class)
@Composable
fun LinearProgressIndicator(
    progress: () -> Float,
    modifier: Modifier = Modifier,
    color: Color = ProgressIndicatorDefaults.linearColor,
    trackColor: Color = ProgressIndicatorDefaults.linearTrackColor,
    strokeCap: StrokeCap = ProgressIndicatorDefaults.LinearStrokeCap,
)

Parameters

name	description
progress	the progress of this progress indicator, where 0.0 represents no progress and 1.0 represents full progress. Values outside of this range are coerced into the range.
modifier	the [Modifier] to be applied to this progress indicator
color	color of this progress indicator
trackColor	color of the track behind the indicator, visible when the progress has not reached the area of the overall indicator yet
strokeCap	stroke cap to use for the ends of this progress indicator

@OptIn(ExperimentalMaterial3Api::class)
@Composable
fun LinearProgressIndicator(
    progress: () -> Float,
    modifier: Modifier = Modifier,
    color: Color = ProgressIndicatorDefaults.linearColor,
    trackColor: Color = ProgressIndicatorDefaults.linearTrackColor,
    strokeCap: StrokeCap = ProgressIndicatorDefaults.LinearStrokeCap,
    gapSize: Dp = ProgressIndicatorDefaults.LinearIndicatorTrackGapSize,
    drawStopIndicator: DrawScope.() -> Unit = {
        drawStopIndicator(
            drawScope = this,
            stopSize = ProgressIndicatorDefaults.LinearTrackStopIndicatorSize,
            color = color,
            strokeCap = strokeCap
        )
    },
)

Parameters

name	description
progress	the progress of this progress indicator, where 0.0 represents no progress and 1.0 represents full progress. Values outside of this range are coerced into the range.
modifier	the [Modifier] to be applied to this progress indicator
color	color of this progress indicator
trackColor	color of the track behind the indicator, visible when the progress has not reached the area of the overall indicator yet
strokeCap	stroke cap to use for the ends of this progress indicator
gapSize	size of the gap between the progress indicator and the track
drawStopIndicator	lambda that will be called to draw the stop indicator

@Deprecated(
    message =
        "Use the overload that takes `gapSize`, see `" +
            "LegacyIndeterminateLinearProgressIndicatorSample` on how to restore the previous behavior",
    replaceWith =
        ReplaceWith("LinearProgressIndicator(modifier, color, trackColor, strokeCap, gapSize)"),
    level = DeprecationLevel.HIDDEN
)
@OptIn(ExperimentalMaterial3Api::class)
@Composable
fun LinearProgressIndicator(
    modifier: Modifier = Modifier,
    color: Color = ProgressIndicatorDefaults.linearColor,
    trackColor: Color = ProgressIndicatorDefaults.linearTrackColor,
    strokeCap: StrokeCap = ProgressIndicatorDefaults.LinearStrokeCap,
)

Parameters

name	description
modifier	the [Modifier] to be applied to this progress indicator
color	color of this progress indicator
trackColor	color of the track behind the indicator, visible when the progress has not reached the area of the overall indicator yet
strokeCap	stroke cap to use for the ends of this progress indicator

@OptIn(ExperimentalMaterial3Api::class)
@Composable
fun LinearProgressIndicator(
    modifier: Modifier = Modifier,
    color: Color = ProgressIndicatorDefaults.linearColor,
    trackColor: Color = ProgressIndicatorDefaults.linearTrackColor,
    strokeCap: StrokeCap = ProgressIndicatorDefaults.LinearStrokeCap,
    gapSize: Dp = ProgressIndicatorDefaults.LinearIndicatorTrackGapSize,
)

Parameters

name	description
modifier	the [Modifier] to be applied to this progress indicator
color	color of this progress indicator
trackColor	color of the track behind the indicator, visible when the progress has not reached the area of the overall indicator yet
strokeCap	stroke cap to use for the ends of this progress indicator
gapSize	size of the gap between the progress indicator and the track

@Deprecated(
    message = "Use the overload that takes `progress` as a lambda",
    replaceWith =
        ReplaceWith(
            "LinearProgressIndicator(\n" +
                "progress = { progress },\n" +
                "modifier = modifier,\n" +
                "color = color,\n" +
                "trackColor = trackColor,\n" +
                "strokeCap = strokeCap,\n" +
                ")"
        )
)
@Composable
fun LinearProgressIndicator(
    progress: Float,
    modifier: Modifier = Modifier,
    color: Color = ProgressIndicatorDefaults.linearColor,
    trackColor: Color = ProgressIndicatorDefaults.linearTrackColor,
    strokeCap: StrokeCap = ProgressIndicatorDefaults.LinearStrokeCap,
)

@Suppress("DEPRECATION")
@Deprecated("Maintained for binary compatibility", level = DeprecationLevel.HIDDEN)
@Composable
fun LinearProgressIndicator(
    progress: Float,
    modifier: Modifier = Modifier,
    color: Color = ProgressIndicatorDefaults.linearColor,
    trackColor: Color = ProgressIndicatorDefaults.linearTrackColor,
)

@Deprecated("Maintained for binary compatibility", level = DeprecationLevel.HIDDEN)
@Composable
fun LinearProgressIndicator(
    modifier: Modifier = Modifier,
    color: Color = ProgressIndicatorDefaults.linearColor,
    trackColor: Color = ProgressIndicatorDefaults.linearTrackColor,
)

Code Examples

LinearProgressIndicatorSample

@Preview
@Composable
fun LinearProgressIndicatorSample() {
    var progress by remember { mutableFloatStateOf(0.1f) }
    val animatedProgress by
        animateFloatAsState(
            targetValue = progress,
            animationSpec = ProgressIndicatorDefaults.ProgressAnimationSpec
        )

    Column(horizontalAlignment = Alignment.CenterHorizontally) {
        LinearProgressIndicator(
            progress = { animatedProgress },
        )
        Spacer(Modifier.requiredHeight(30.dp))
        Text("Set progress:")
        Slider(
            modifier = Modifier.width(300.dp),
            value = progress,
            valueRange = 0f..1f,
            onValueChange = { progress = it },
        )
    }
}

IndeterminateLinearProgressIndicatorSample

@Preview
@Composable
fun IndeterminateLinearProgressIndicatorSample() {
    Column(horizontalAlignment = Alignment.CenterHorizontally) { LinearProgressIndicator() }
}