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← Component in Wear Material 3 Compose

CompactButton

Android

A Wear Material3 [CompactButton] that offers two slots and a specific layout for an icon and label. Both the icon and label are optional however it is expected that at least one will be provided.

The [CompactButton] is Stadium shaped and has a max height designed to take no more than one line of text and/or one icon. The default max height is [ButtonDefaults.CompactButtonHeight]. This includes a visible button height of 32.dp and 8.dp of padding above and below the button in order to meet accessibility guidelines that request a minimum of 48.dp height and width of tappable area.

If an icon is provided then the labels should be "start" aligned, e.g. left aligned in left-to-right mode so that the text starts next to the icon.

The items are laid out as follows.

  1. If a label is provided then the button will be laid out with the optional icon at the start of a row followed by the label with a default max height of [ButtonDefaults.CompactButtonHeight].

  2. If only an icon is provided it will be laid out vertically and horizontally centered with a default height of [ButtonDefaults.CompactButtonHeight] and the default width of [ButtonDefaults.IconOnlyCompactButtonWidth]

If neither icon nor label is provided then the button will displayed like an icon only button but with no contents or background color.

[CompactButton] takes the [ButtonDefaults.buttonColors] color scheme by default, with colored background, contrasting content color and no border. This is a high-emphasis button for the primary, most important or most common action on a screen.

Other recommended [ButtonColors] for different levels of emphasis are: [ButtonDefaults.filledTonalButtonColors], [ButtonDefaults.outlinedButtonColors] and [ButtonDefaults.childButtonColors]. Buttons can also take an image background using [ButtonDefaults.imageBackgroundButtonColors].

[CompactButton] can be enabled or disabled. A disabled button will not respond to click events.

Last updated:

Installation

dependencies {
   implementation("androidx.wear.compose:compose-material3:1.0.0-alpha23")
}

Overloads

@Composable
fun CompactButton(
    onClick: () -> Unit,
    modifier: Modifier = Modifier,
    icon: (@Composable BoxScope.() -> Unit)? = null,
    enabled: Boolean = true,
    shape: Shape = CompactButtonTokens.ContainerShape.value,
    colors: ButtonColors = ButtonDefaults.buttonColors(),
    border: BorderStroke? = null,
    contentPadding: PaddingValues = ButtonDefaults.CompactButtonContentPadding,
    interactionSource: MutableInteractionSource? = null,
    label: (@Composable RowScope.() -> Unit)? = null,
)

Parameters

namedescription
onClickWill be called when the user clicks the button
modifierModifier to be applied to the button
labelA slot for providing the button's main label. The contents are expected to be text which is "start" aligned if there is an icon preset and "center" aligned if not.
iconA slot for providing the button's icon. The contents are expected to be a horizontally and vertically aligned icon of size [ButtonDefaults.SmallIconSize] when used with a label or [ButtonDefaults.IconSize] when used as the only content in the button.
colors[ButtonColors] that will be used to resolve the background and content color for this button in different states. See [ButtonDefaults.buttonColors].
enabledControls the enabled state of the button. When false, this button will not be clickable
interactionSourcean optional hoisted [MutableInteractionSource] for observing and emitting [Interaction]s for this button. You can use this to change the button's appearance or preview the button in different states. Note that if null is provided, interactions will still happen internally.
contentPaddingThe spacing values to apply internally between the container and the content
shapeDefines the button's shape. It is strongly recommended to use the default as this shape is a key characteristic of the Wear Material3 Theme
borderOptional [BorderStroke] that will be used to resolve the border for this button in different states.

Code Examples

CompactButtonSample

@Composable
@Sampled
fun CompactButtonSample() {
    CompactButton(
        onClick = { /* Do something */ },
        icon = {
            Icon(
                Icons.Filled.Favorite,
                contentDescription = "Favorite icon",
                modifier = Modifier.size(ButtonDefaults.SmallIconSize)
            )
        }
    ) {
        Text("Compact Button", maxLines = 1, overflow = TextOverflow.Ellipsis)
    }
}

FilledTonalCompactButtonSample

@Composable
@Sampled
fun FilledTonalCompactButtonSample() {
    CompactButton(
        onClick = { /* Do something */ },
        icon = {
            Icon(
                Icons.Filled.Favorite,
                contentDescription = "Favorite icon",
                modifier = Modifier.size(ButtonDefaults.SmallIconSize)
            )
        },
        colors = ButtonDefaults.filledTonalButtonColors()
    ) {
        Text("Filled Tonal Compact Button", maxLines = 1, overflow = TextOverflow.Ellipsis)
    }
}

OutlinedCompactButtonSample

@Composable
@Sampled
fun OutlinedCompactButtonSample() {
    CompactButton(
        onClick = { /* Do something */ },
        icon = {
            Icon(
                Icons.Filled.ArrowDropDown,
                contentDescription = "Expand",
                modifier = Modifier.size(ButtonDefaults.SmallIconSize)
            )
        },
        colors = ButtonDefaults.outlinedButtonColors(),
        border = ButtonDefaults.outlinedButtonBorder(enabled = true)
    ) {
        Text("Show More", maxLines = 1, overflow = TextOverflow.Ellipsis)
    }
}