androidx.wear.protolayout.material3

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Kotlin |Java

Classes

AppCardStyle	Provides style values for the app card component.
ButtonColors	Represents the container and content colors used in buttons, such as textEdgeButton or iconEdgeButton.
ButtonGroupScope	Scope for the children of a buttonGroup
CardColors	Represents colors used in card components, such as titleCard or appCard.
ColorScheme	A ColorScheme holds all the named color parameters for a MaterialTheme.
DataCardStyle	Provides style values for the data card component.
EdgeButtonStyle	Provides style values for edge button component.
GraphicDataCardStyle	Provides style values for the graphic data card component.
IconButtonStyle	Provides style values for the icon button component.
MaterialScope	Receiver scope which is used by all ProtoLayout Material3 components and layout to support opinionated defaults and to provide the global information for styling Material3 components.
ProgressIndicatorColors	Represents the indicator and track colors used in progress indicator.
Shapes	Material surfaces can be displayed in different shapes.
TextButtonStyle	Provides style values for the text button component.
TitleCardStyle	Provides style values for the title card component.
TitleContentPlacementInDataCard	Defines the placement of the title and content slots in iconDataCard, relative to other optional slots in that type of card.

Objects

ButtonDefaults
ButtonGroupDefaults	Contains the default values used by buttonGroup
CardDefaults
CircularProgressIndicatorDefaults
TitleCardDefaults
Typography	Class holding typography definitions as defined by the Wear Material3 typography specification.

Annotations

MaterialScopeMarker

Top-level functions summary

ColorScheme	dynamicColorScheme(context: Context, defaultColorScheme: ColorScheme) Creates a dynamic color scheme.
Boolean	isDynamicColorSchemeEnabled(context: Context) Returns whether the dynamic colors scheme (colors following the system theme) is enabled.
LayoutElementBuilders.LayoutElement	materialScope(     context: Context,     deviceConfiguration: DeviceParametersBuilders.DeviceParameters,     allowDynamicTheme: Boolean,     defaultColorScheme: ColorScheme,     layout: MaterialScope.() -> LayoutElementBuilders.LayoutElement ) Creates a top-level receiver scope MaterialScope that calls the given layout to support for opinionated defaults and building Material3 components and layout, with default dynamic theme.

Extension functions summary

LayoutElementBuilders.LayoutElement	MaterialScope.appCard(     onClick: ModifiersBuilders.Clickable,     title: MaterialScope.() -> LayoutElementBuilders.LayoutElement,     modifier: LayoutModifier,     content: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)?,     avatar: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)?,     label: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)?,     time: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)?,     height: DimensionBuilders.ContainerDimension,     shape: ModifiersBuilders.Corner,     colors: CardColors,     backgroundContent: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)?,     style: AppCardStyle,     contentPadding: ModifiersBuilders.Padding ) Opinionated ProtoLayout Material3 app card that offers up to 5 slots, usually text based.
LayoutElementBuilders.LayoutElement	MaterialScope.avatarImage(     protoLayoutResourceId: String,     width: DimensionBuilders.ImageDimension,     height: DimensionBuilders.ImageDimension,     modifier: LayoutModifier,     contentScaleMode: Int ) Returns the avatar image with the defined style.
LayoutElementBuilders.LayoutElement	MaterialScope.backgroundImage(     protoLayoutResourceId: String,     modifier: LayoutModifier,     width: DimensionBuilders.ImageDimension,     height: DimensionBuilders.ImageDimension,     overlayColor: LayoutColor,     overlayWidth: DimensionBuilders.ContainerDimension,     overlayHeight: DimensionBuilders.ContainerDimension,     contentScaleMode: Int ) Returns the image background with the defined style.
LayoutElementBuilders.LayoutElement	MaterialScope.button(     onClick: ModifiersBuilders.Clickable,     modifier: LayoutModifier,     content: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)?,     width: DimensionBuilders.ContainerDimension,     height: DimensionBuilders.ContainerDimension,     backgroundContent: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)?,     contentPadding: ModifiersBuilders.Padding ) ProtoLayout Material3 clickable component button that offers a single slot to take any content.
LayoutElementBuilders.LayoutElement	MaterialScope.buttonGroup(     width: DimensionBuilders.ContainerDimension,     height: DimensionBuilders.ContainerDimension,     spacing: @Dimension(unit = 0) Float,     content: ButtonGroupScope.() -> Unit ) ProtoLayout Material3 component-layout that places its children in a horizontal sequence.
LayoutElementBuilders.LayoutElement	MaterialScope.card(     onClick: ModifiersBuilders.Clickable,     modifier: LayoutModifier,     width: DimensionBuilders.ContainerDimension,     height: DimensionBuilders.ContainerDimension,     backgroundContent: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)?,     contentPadding: ModifiersBuilders.Padding,     content: MaterialScope.() -> LayoutElementBuilders.LayoutElement ) ProtoLayout Material3 clickable component card that offers a single slot to take any content.
LayoutElementBuilders.LayoutElement	MaterialScope.circularProgressIndicator(     staticProgress: Float,     dynamicProgress: DynamicBuilders.DynamicFloat?,     modifier: LayoutModifier,     startAngleDegrees: Float,     endAngleDegrees: Float,     strokeWidth: @Dimension(unit = 0) Float,     gapSize: @Dimension(unit = 0) Float,     colors: ProgressIndicatorColors,     size: DimensionBuilders.ContainerDimension ) Protolayout Material3 design circular progress indicator.
LayoutElementBuilders.LayoutElement	MaterialScope.graphicDataCard(     onClick: ModifiersBuilders.Clickable,     graphic: MaterialScope.() -> LayoutElementBuilders.LayoutElement,     title: MaterialScope.() -> LayoutElementBuilders.LayoutElement,     modifier: LayoutModifier,     content: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)?,     height: DimensionBuilders.ContainerDimension,     shape: ModifiersBuilders.Corner,     colors: CardColors,     style: GraphicDataCardStyle,     horizontalAlignment: Int,     contentPadding: ModifiersBuilders.Padding ) Opinionated ProtoLayout Material3 graphic data card that offers a slot for graphic data such as progress indicator and up to 2 vertically stacked slots, usually for textual description.
LayoutElementBuilders.LayoutElement	MaterialScope.icon(     protoLayoutResourceId: String,     size: DimensionBuilders.ImageDimension,     tintColor: LayoutColor ) Returns the icon components with the defined style.
LayoutElementBuilders.LayoutElement	MaterialScope.iconButton(     onClick: ModifiersBuilders.Clickable,     iconContent: MaterialScope.() -> LayoutElementBuilders.LayoutElement,     modifier: LayoutModifier,     width: DimensionBuilders.ContainerDimension,     height: DimensionBuilders.ContainerDimension,     shape: ModifiersBuilders.Corner,     colors: ButtonColors,     backgroundContent: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)?,     style: IconButtonStyle,     contentPadding: ModifiersBuilders.Padding ) Opinionated ProtoLayout Material3 icon button that offers a single slot to take content representing icon, for example icon.
LayoutElementBuilders.LayoutElement	MaterialScope.iconDataCard(     onClick: ModifiersBuilders.Clickable,     title: MaterialScope.() -> LayoutElementBuilders.LayoutElement,     modifier: LayoutModifier,     content: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)?,     secondaryIcon: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)?,     width: DimensionBuilders.ContainerDimension,     height: DimensionBuilders.ContainerDimension,     shape: ModifiersBuilders.Corner,     colors: CardColors,     backgroundContent: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)?,     style: DataCardStyle,     titleContentPlacement: TitleContentPlacementInDataCard,     contentPadding: ModifiersBuilders.Padding ) Opinionated ProtoLayout Material3 data card that offers up to 3 vertically stacked slots, usually text or numeral based, with icon.
LayoutElementBuilders.LayoutElement	MaterialScope.iconEdgeButton(     onClick: ModifiersBuilders.Clickable,     modifier: LayoutModifier,     colors: ButtonColors,     iconContent: MaterialScope.() -> LayoutElementBuilders.LayoutElement ) ProtoLayout Material3 component edge button that offers a single slot to take an icon or similar round, small content.
LayoutElementBuilders.LayoutElement	MaterialScope.primaryLayout(     mainSlot: MaterialScope.() -> LayoutElementBuilders.LayoutElement,     titleSlot: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)?,     bottomSlot: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)?,     labelForBottomSlot: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)?,     onClick: ModifiersBuilders.Clickable? ) ProtoLayout Material3 full screen layout that represents a suggested Material3 layout style that is responsive and takes care of the elements placement, together with the recommended margin and padding applied.
LayoutElementBuilders.LayoutElement	MaterialScope.text(     text: LayoutString,     typography: Int,     color: LayoutColor,     italic: Boolean,     underline: Boolean,     scalable: Boolean,     maxLines: Int,     multilineAlignment: Int,     overflow: Int,     modifiers: LayoutModifier ) ProtoLayout component that represents text object holding any information.
LayoutElementBuilders.LayoutElement	MaterialScope.textButton(     onClick: ModifiersBuilders.Clickable,     labelContent: MaterialScope.() -> LayoutElementBuilders.LayoutElement,     modifier: LayoutModifier,     width: DimensionBuilders.ContainerDimension,     height: DimensionBuilders.ContainerDimension,     shape: ModifiersBuilders.Corner,     colors: ButtonColors,     backgroundContent: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)?,     style: TextButtonStyle,     contentPadding: ModifiersBuilders.Padding ) Opinionated ProtoLayout Material3 text button that offers a single slot to take content representing short text, for example text.
LayoutElementBuilders.LayoutElement	MaterialScope.textDataCard(     onClick: ModifiersBuilders.Clickable,     title: MaterialScope.() -> LayoutElementBuilders.LayoutElement,     modifier: LayoutModifier,     content: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)?,     secondaryText: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)?,     width: DimensionBuilders.ContainerDimension,     height: DimensionBuilders.ContainerDimension,     shape: ModifiersBuilders.Corner,     colors: CardColors,     backgroundContent: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)?,     style: DataCardStyle,     contentPadding: ModifiersBuilders.Padding ) Opinionated ProtoLayout Material3 data card that offers up to 3 vertically stacked slots, usually text or numeral based.
LayoutElementBuilders.LayoutElement	MaterialScope.textEdgeButton(     onClick: ModifiersBuilders.Clickable,     modifier: LayoutModifier,     colors: ButtonColors,     labelContent: MaterialScope.() -> LayoutElementBuilders.LayoutElement ) ProtoLayout Material3 component edge button that offers a single slot to take a text or similar long and wide content.
LayoutElementBuilders.LayoutElement	MaterialScope.titleCard(     onClick: ModifiersBuilders.Clickable,     title: MaterialScope.() -> LayoutElementBuilders.LayoutElement,     modifier: LayoutModifier,     content: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)?,     time: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)?,     height: DimensionBuilders.ContainerDimension,     shape: ModifiersBuilders.Corner,     colors: CardColors,     backgroundContent: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)?,     style: TitleCardStyle,     contentPadding: ModifiersBuilders.Padding,     horizontalAlignment: Int ) Opinionated ProtoLayout Material3 title card that offers 1 to 3 slots, usually text based.
LayoutColor	LayoutColor.withOpacity(ratio: @FloatRange(from = 0.0, to = 1.0) Float) Changes the opacity/transparency of the given color.

Top-level functions

dynamicColorScheme

Artifact: androidx.wear.protolayout:protolayout-material3

View Source

Added in 1.3.0-alpha06

fun dynamicColorScheme(
    context: Context,
    defaultColorScheme: ColorScheme = ColorScheme()
): ColorScheme

Creates a dynamic color scheme.

Use this function to create a color scheme based on the current watchface. If the user changes the watchface colors, this color scheme will change accordingly. This function checks whether the dynamic color scheme can be used and returns defaultColorScheme otherwise.

Parameters
context: Context	The context required to get system resource data.
defaultColorScheme: ColorScheme = ColorScheme()	The fallback ColorScheme to return if the dynamic color scheme is switched off or unavailable on this device.

isDynamicColorSchemeEnabled

Artifact: androidx.wear.protolayout:protolayout-material3

View Source

Added in 1.3.0-alpha06

fun isDynamicColorSchemeEnabled(context: Context): Boolean

Returns whether the dynamic colors scheme (colors following the system theme) is enabled.

If enabled, and elements or MaterialScope are opted in to using dynamic theme, colors will change whenever system theme changes.

materialScope

Artifact: androidx.wear.protolayout:protolayout-material3

View Source

fun materialScope(
    context: Context,
    deviceConfiguration: DeviceParametersBuilders.DeviceParameters,
    allowDynamicTheme: Boolean = true,
    defaultColorScheme: ColorScheme = ColorScheme(),
    layout: MaterialScope.() -> LayoutElementBuilders.LayoutElement
): LayoutElementBuilders.LayoutElement

Creates a top-level receiver scope MaterialScope that calls the given layout to support for opinionated defaults and building Material3 components and layout, with default dynamic theme.

Parameters
context: Context	The Android Context for the Tile service
deviceConfiguration: DeviceParametersBuilders.DeviceParameters	The device parameters for where the components will be rendered
allowDynamicTheme: Boolean = true	If dynamic colors theme should be used on components, meaning that colors will follow the system theme if enabled on the device. If not set, defaults to using the system theme
defaultColorScheme: ColorScheme = ColorScheme()	Color Scheme with static colors. The color theme to be used, when allowDynamicTheme is false, or when dynamic theming is disabled by the system or user. If not set, defaults to default theme.
layout: MaterialScope.() -> LayoutElementBuilders.LayoutElement	Scoped slot for the content of layout to be displayed

Extension functions

appCard

Artifact: androidx.wear.protolayout:protolayout-material3

View Source

fun MaterialScope.appCard(
    onClick: ModifiersBuilders.Clickable,
    title: MaterialScope.() -> LayoutElementBuilders.LayoutElement,
    modifier: LayoutModifier = LayoutModifier,
    content: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null,
    avatar: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null,
    label: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null,
    time: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null,
    height: DimensionBuilders.ContainerDimension = wrapWithMinTapTargetDimension(),
    shape: ModifiersBuilders.Corner = if (deviceConfiguration.screenWidthDp.isBreakpoint()) shapes.extraLarge else shapes.large,
    colors: CardColors = filledCardColors(),
    backgroundContent: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null,
    style: AppCardStyle = defaultAppCardStyle(),
    contentPadding: ModifiersBuilders.Padding = style.innerPadding
): LayoutElementBuilders.LayoutElement

Opinionated ProtoLayout Material3 app card that offers up to 5 slots, usually text based.

Those are vertically stacked title and content, and additional side slot for a time.

The first row of the card has three slots:

1. a small optional image, such as avatarImage

2. label, which is expected to be a short text

3. time, end aligned.

The second row shows a title, this is expected to be a single row of start aligned text.

The rest of the appCard contains the content which should be text.

import androidx.wear.protolayout.DimensionBuilders.expand
import androidx.wear.protolayout.material3.AppCardStyle
import androidx.wear.protolayout.material3.CardDefaults.filledTonalCardColors
import androidx.wear.protolayout.material3.appCard
import androidx.wear.protolayout.material3.card
import androidx.wear.protolayout.material3.materialScope
import androidx.wear.protolayout.material3.primaryLayout
import androidx.wear.protolayout.material3.text
import androidx.wear.protolayout.modifiers.LayoutModifier
import androidx.wear.protolayout.modifiers.clickable
import androidx.wear.protolayout.modifiers.contentDescription
import androidx.wear.protolayout.types.layoutString

materialScope(context, deviceConfiguration) {
        primaryLayout(
            mainSlot = {
                appCard(
                    onClick = clickable,
                    modifier = LayoutModifier.contentDescription("App Card"),
                    height = expand(),
                    colors = filledTonalCardColors(),
                    style = AppCardStyle.largeAppCardStyle(),
                    title = { text("This is title of the app card".layoutString) },
                    time = { text("NOW".layoutString) },
                    label = { text("Label".layoutString) },
                    content = { text("Content of the Card!".layoutString) },
                )
            }
        )
    }

Parameters
onClick: ModifiersBuilders.Clickable	Associated Clickable for click events. When the card is clicked it will fire the associated action.
title: MaterialScope.() -> LayoutElementBuilders.LayoutElement	A slot for displaying the title of the card, expected to be one line of text. Uses CardColors.title color by default.
modifier: LayoutModifier = LayoutModifier	Modifiers to set to this element. It's highly recommended to set a content description using contentDescription.
content: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null	The optional body content of the card. Uses CardColors.content color by default.
avatar: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null	An optional slot in header for displaying small image, such as avatarImage.
label: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null	An optional slot in header for displaying short, label text. Uses CardColors.label color by default.
time: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null	An optional slot for displaying the time relevant to the contents of the card, expected to be a short piece of text. Uses CardColors.time color by default.
height: DimensionBuilders.ContainerDimension = wrapWithMinTapTargetDimension()	The height of this card. It's highly recommended to leave this with default value as wrap if there's only 1 card on the screen. If there are two cards, it is highly recommended to set this to expand and use the smaller styles.
shape: ModifiersBuilders.Corner = if (deviceConfiguration.screenWidthDp.isBreakpoint()) shapes.extraLarge else shapes.large	Defines the card's shape, in other words the corner radius for this card.
colors: CardColors = filledCardColors()	The colors to be used for a background and inner content of this card. If the background image is also specified, the image will be laid out on top of the background color. In case of the fully opaque background image, then the background color will not be shown. Specified colors can be CardDefaults.filledCardColors for high emphasis card, CardDefaults.filledVariantCardColors for high/medium emphasis card, CardDefaults.filledTonalCardColors for low/medium emphasis card, CardDefaults.imageBackgroundCardColors for card with image as a background or custom built CardColors.
backgroundContent: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null	The background object to be used behind the content in the card. It is recommended to use the default styling that is automatically provided by only calling backgroundImage with the content. It can be combined with the specified colors's background color behind it.
style: AppCardStyle = defaultAppCardStyle()	The style which provides the attribute values required for constructing this title card and its inner content. It also provides default style for the inner content, that can be overridden by each content slot.
contentPadding: ModifiersBuilders.Padding = style.innerPadding	The inner padding used to prevent inner content from being too close to the card's edge. It's highly recommended to keep the default.

avatarImage

Artifact: androidx.wear.protolayout:protolayout-material3

View Source

Added in 1.3.0-alpha06

fun MaterialScope.avatarImage(
    protoLayoutResourceId: String,
    width: DimensionBuilders.ImageDimension = defaultAvatarImageStyle.width,
    height: DimensionBuilders.ImageDimension = defaultAvatarImageStyle.height,
    modifier: LayoutModifier = LayoutModifier,
    contentScaleMode: Int = defaultAvatarImageStyle.contentScaleMode
): LayoutElementBuilders.LayoutElement

Returns the avatar image with the defined style.

Material components such as appCard provide proper defaults for the small avatar image. In order to take advantage of those defaults, this should be used with the resource ID only: avatarImage("id").

Parameters
protoLayoutResourceId: String	The protolayout resource id of the image. Node that, this is not an Android resource id.
width: DimensionBuilders.ImageDimension = defaultAvatarImageStyle.width	The width of an image. Usually, a small image that fit into the component's slot.
height: DimensionBuilders.ImageDimension = defaultAvatarImageStyle.height	The height of an image. Usually, a small image that fit into the component's slot.
modifier: LayoutModifier = LayoutModifier	Modifiers to set to this element.
contentScaleMode: Int = defaultAvatarImageStyle.contentScaleMode	The content scale mode for the image to define how image will adapt to the given size

backgroundImage

Artifact: androidx.wear.protolayout:protolayout-material3

View Source

Added in 1.3.0-alpha06

fun MaterialScope.backgroundImage(
    protoLayoutResourceId: String,
    modifier: LayoutModifier = LayoutModifier,
    width: DimensionBuilders.ImageDimension = defaultBackgroundImageStyle.width,
    height: DimensionBuilders.ImageDimension = defaultBackgroundImageStyle.height,
    overlayColor: LayoutColor = defaultBackgroundImageStyle.overlayColor,
    overlayWidth: DimensionBuilders.ContainerDimension = defaultBackgroundImageStyle.overlayWidth,
    overlayHeight: DimensionBuilders.ContainerDimension = defaultBackgroundImageStyle.overlayHeight,
    contentScaleMode: Int = defaultBackgroundImageStyle.contentScaleMode
): LayoutElementBuilders.LayoutElement

Returns the image background with the defined style.

Material components provide proper defaults for the background image. In order to take advantage of those defaults, this should be used with the resource ID only: backgroundImage("id").

Parameters
protoLayoutResourceId: String	The protolayout resource id of the image. Node that, this is not an Android resource id.
modifier: LayoutModifier = LayoutModifier	Modifiers to set to this element.
width: DimensionBuilders.ImageDimension = defaultBackgroundImageStyle.width	The width of an image. Usually, this matches the width of the parent component this is used in.
height: DimensionBuilders.ImageDimension = defaultBackgroundImageStyle.height	The height of an image. Usually, this matches the height of the parent component this is used in.
overlayColor: LayoutColor = defaultBackgroundImageStyle.overlayColor	The color used to provide the overlay over the image for better readability. It's recommended to use ColorScheme.background color with 60% opacity.
overlayWidth: DimensionBuilders.ContainerDimension = defaultBackgroundImageStyle.overlayWidth	The width of the overlay on top of the image background
overlayHeight: DimensionBuilders.ContainerDimension = defaultBackgroundImageStyle.overlayHeight	The height of the overlay on top of the image background
contentScaleMode: Int = defaultBackgroundImageStyle.contentScaleMode	The content scale mode for the image to define how image will adapt to the given size

button

Artifact: androidx.wear.protolayout:protolayout-material3

View Source

fun MaterialScope.button(
    onClick: ModifiersBuilders.Clickable,
    modifier: LayoutModifier = LayoutModifier,
    content: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null,
    width: DimensionBuilders.ContainerDimension = if (content == null) IMAGE_BUTTON_DEFAULT_SIZE_DP.toDp()
        else wrapWithMinTapTargetDimension(),
    height: DimensionBuilders.ContainerDimension = if (content == null) IMAGE_BUTTON_DEFAULT_SIZE_DP.toDp()
        else wrapWithMinTapTargetDimension(),
    backgroundContent: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null,
    contentPadding: ModifiersBuilders.Padding = DEFAULT_CONTENT_PADDING
): LayoutElementBuilders.LayoutElement

ProtoLayout Material3 clickable component button that offers a single slot to take any content.

The button is usually stadium or circle shaped with fully rounded corners by default. It is highly recommended to set its width and height to fill the available space, by expand or weight for optimal experience across different screen sizes, and use buttonGroup to arrange them.

It can be used for displaying any clickable container with additional data, text or images.

This button can also be used to create image button that only has a background image and no inner content, see androidx.wear.protolayout.material3.samples.imageButtonSample

import androidx.wear.protolayout.DimensionBuilders.expand
import androidx.wear.protolayout.material3.button
import androidx.wear.protolayout.material3.materialScope
import androidx.wear.protolayout.material3.primaryLayout
import androidx.wear.protolayout.material3.text
import androidx.wear.protolayout.modifiers.LayoutModifier
import androidx.wear.protolayout.modifiers.backgroundColor
import androidx.wear.protolayout.modifiers.clickable
import androidx.wear.protolayout.modifiers.contentDescription
import androidx.wear.protolayout.types.layoutString

materialScope(context, deviceConfiguration) {
        primaryLayout(
            mainSlot = {
                button(
                    onClick = clickable,
                    modifier =
                        LayoutModifier.contentDescription("Big button with image background")
                            .backgroundColor(colorScheme.primary),
                    width = expand(),
                    height = expand(),
                    content = { text("Button!".layoutString) }
                )
            }
        )
    }

import androidx.wear.protolayout.DimensionBuilders.expand
import androidx.wear.protolayout.material3.backgroundImage
import androidx.wear.protolayout.material3.button
import androidx.wear.protolayout.material3.materialScope
import androidx.wear.protolayout.material3.primaryLayout
import androidx.wear.protolayout.material3.text
import androidx.wear.protolayout.modifiers.LayoutModifier
import androidx.wear.protolayout.modifiers.clickable
import androidx.wear.protolayout.modifiers.contentDescription

materialScope(context, deviceConfiguration) {
        primaryLayout(
            mainSlot = {
                button(
                    onClick = clickable,
                    modifier =
                        LayoutModifier.contentDescription("Big button with image background"),
                    width = expand(),
                    height = expand(),
                    backgroundContent = { backgroundImage(protoLayoutResourceId = "id") }
                )
            }
        )
    }

Parameters
onClick: ModifiersBuilders.Clickable	Associated Clickable for click events. When the button is clicked it will fire the associated action.
modifier: LayoutModifier = LayoutModifier	Modifiers to set to this element. It's highly recommended to set a content description using contentDescription. If LayoutModifier.background modifier is used and the the background image is also specified, the image will be laid out on top of this color. In case of the fully opaque background image, then the background color will not be shown.
content: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null	The inner content to be put inside of this button.
width: DimensionBuilders.ContainerDimension = if (content == null) IMAGE_BUTTON_DEFAULT_SIZE_DP.toDp() else wrapWithMinTapTargetDimension()	The width of this button. It's highly recommended to set this to expand or weight
height: DimensionBuilders.ContainerDimension = if (content == null) IMAGE_BUTTON_DEFAULT_SIZE_DP.toDp() else wrapWithMinTapTargetDimension()	The height of this button. It's highly recommended to set this to expand or weight
backgroundContent: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null	The background object to be used behind the content in the button. It is recommended to use the default styling that is automatically provided by only calling backgroundImage with the content. It can be combined with the specified LayoutModifier.background behind it.
contentPadding: ModifiersBuilders.Padding = DEFAULT_CONTENT_PADDING	The inner padding used to prevent inner content from being too close to the button's edge. It's highly recommended to keep the default.

buttonGroup

Artifact: androidx.wear.protolayout:protolayout-material3

View Source

Added in 1.3.0-alpha06

fun MaterialScope.buttonGroup(
    width: DimensionBuilders.ContainerDimension = expand(),
    height: DimensionBuilders.ContainerDimension = expand(),
    spacing: @Dimension(unit = 0) Float = DEFAULT_SPACER_SIZE_DP,
    content: ButtonGroupScope.() -> Unit
): LayoutElementBuilders.LayoutElement

ProtoLayout Material3 component-layout that places its children in a horizontal sequence.

These behave as a group which fill the available space to maximize on screen real estate. The color and size of the child elements should be changed in order to create hierarchy and priority.

The width and height of the Button/Card should be flexible (set to androidx.wear.protolayout.DimensionBuilders.expand or androidx.wear.protolayout.DimensionBuilders.weight) and their proportion should be either equal or weight based. However the buttonGroup displays correctly too if the sizes of elements provided are set to a fixed width/height, although it can lead to more empty space on large screen sizes.

A buttonGroup with more than one row can be created by using multiple buttonGroup and Spacers inside a androidx.wear.protolayout.LayoutElementBuilders.Column:

Column.Builder()
  .setWidth(expand())
  .setHeight(expand())
  .addContent(buttonGroup {...})
  .addContent(DEFAULT_SPACER_BETWEEN_BUTTON_GROUPS)
  .addContent(buttonGroup {...})
  .build()
}

Note that, having more than 2 rows in a Column could lead to too small height of elements that aren't in line with minimum tap target.

Parameters
width: DimensionBuilders.ContainerDimension = expand()	The width of this button group
height: DimensionBuilders.ContainerDimension = expand()	The height of this button group
spacing: @Dimension(unit = 0) Float = DEFAULT_SPACER_SIZE_DP	The amount of spacing between buttons
content: ButtonGroupScope.() -> Unit	The content for each child. The UX guidance is to use no more than 3 elements within a this button group.

card

Artifact: androidx.wear.protolayout:protolayout-material3

View Source

fun MaterialScope.card(
    onClick: ModifiersBuilders.Clickable,
    modifier: LayoutModifier = LayoutModifier,
    width: DimensionBuilders.ContainerDimension = wrapWithMinTapTargetDimension(),
    height: DimensionBuilders.ContainerDimension = wrapWithMinTapTargetDimension(),
    backgroundContent: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null,
    contentPadding: ModifiersBuilders.Padding = padding(DEFAULT_CONTENT_PADDING),
    content: MaterialScope.() -> LayoutElementBuilders.LayoutElement
): LayoutElementBuilders.LayoutElement

ProtoLayout Material3 clickable component card that offers a single slot to take any content.

It can be used as the container for more opinionated Card components that take specific content such as icons, images, primary label, secondary label, etc.

The Card is Rectangle shaped with some rounded corners by default. It is highly recommended to set its width and height to fill the available space, by expand or weight for optimal experience across different screen sizes.

It can be used for displaying any clickable container with additional data, text or graphics.

import androidx.wear.protolayout.DimensionBuilders.expand
import androidx.wear.protolayout.material3.backgroundImage
import androidx.wear.protolayout.material3.card
import androidx.wear.protolayout.material3.materialScope
import androidx.wear.protolayout.material3.primaryLayout
import androidx.wear.protolayout.material3.text
import androidx.wear.protolayout.modifiers.LayoutModifier
import androidx.wear.protolayout.modifiers.clickable
import androidx.wear.protolayout.modifiers.contentDescription
import androidx.wear.protolayout.types.layoutString

materialScope(context, deviceConfiguration) {
        primaryLayout(
            mainSlot = {
                card(
                    onClick = clickable,
                    modifier =
                        LayoutModifier.contentDescription("Card with image background")
                            .clickable(id = "card"),
                    width = expand(),
                    height = expand(),
                    backgroundContent = { backgroundImage(protoLayoutResourceId = "id") }
                ) {
                    text("Content of the Card!".layoutString)
                }
            }
        )
    }

Parameters
onClick: ModifiersBuilders.Clickable	Associated Clickable for click events. When the card is clicked it will fire the associated action.
modifier: LayoutModifier = LayoutModifier	Modifiers to set to this element. It's highly recommended to set a content description using contentDescription. If LayoutModifier.background modifier is used and the the background image is also specified, the image will be laid out on top of this color. In case of the fully opaque background image, then the background color will not be shown.
width: DimensionBuilders.ContainerDimension = wrapWithMinTapTargetDimension()	The width of this card. It's highly recommended to set this to expand or weight
height: DimensionBuilders.ContainerDimension = wrapWithMinTapTargetDimension()	The height of this card. It's highly recommended to set this to expand or weight
backgroundContent: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null	The background object to be used behind the content in the card. It is recommended to use the default styling that is automatically provided by only calling backgroundImage with the content. It can be combined with the specified LayoutModifier.background behind it.
contentPadding: ModifiersBuilders.Padding = padding(DEFAULT_CONTENT_PADDING)	The inner padding used to prevent inner content from being too close to the card's edge. It's highly recommended to keep the default.
content: MaterialScope.() -> LayoutElementBuilders.LayoutElement	The inner content to be put inside of this card.

circularProgressIndicator

Artifact: androidx.wear.protolayout:protolayout-material3

View Source

Added in 1.3.0-alpha06

fun MaterialScope.circularProgressIndicator(
    staticProgress: Float = 0.0f,
    dynamicProgress: DynamicBuilders.DynamicFloat? = null,
    modifier: LayoutModifier = LayoutModifier,
    startAngleDegrees: Float = 0.0f,
    endAngleDegrees: Float = startAngleDegrees + 360F,
    strokeWidth: @Dimension(unit = 0) Float = LARGE_STROKE_WIDTH,
    gapSize: @Dimension(unit = 0) Float = calculateRecommendedGapSize(strokeWidth),
    colors: ProgressIndicatorColors = filledProgressIndicatorColors(),
    size: DimensionBuilders.ContainerDimension = expand()
): LayoutElementBuilders.LayoutElement

Protolayout Material3 design circular progress indicator.

import androidx.wear.protolayout.DimensionBuilders.dp
import androidx.wear.protolayout.expression.DynamicBuilders.DynamicFloat
import androidx.wear.protolayout.material3.CircularProgressIndicatorDefaults
import androidx.wear.protolayout.material3.CircularProgressIndicatorDefaults.filledVariantProgressIndicatorColors
import androidx.wear.protolayout.material3.circularProgressIndicator
import androidx.wear.protolayout.material3.materialScope
import androidx.wear.protolayout.material3.text

materialScope(context, deviceParameters) {
        circularProgressIndicator(
            dynamicProgress =
                DynamicFloat.animate(
                    0.0F,
                    1.1F,
                    CircularProgressIndicatorDefaults.recommendedAnimationSpec
                ),
            startAngleDegrees = 200F,
            endAngleDegrees = 520F,
            colors = filledVariantProgressIndicatorColors(),
            size = dp(85F)
        )
    }

Parameters
staticProgress: Float = 0.0f	The static progress of this progress indicator where 0 represent no progress and 1 represents completion. Progress above 1 is also allowed. If dynamicProgress is also set, this static value will be ignored. By default it equals to 0.
dynamicProgress: DynamicBuilders.DynamicFloat? = null	The static progress of this progress indicator where 0 represent no progress and 1 represents completion. Progress above 1 is also allowed. If not provided, the staticProgress is used.
modifier: LayoutModifier = LayoutModifier	Modifiers to set to this element. It's highly recommended to set a content description using contentDescription.
startAngleDegrees: Float = 0.0f	The starting position of the progress arc, measured clockwise in degrees from the 12 o'clock position.
endAngleDegrees: Float = startAngleDegrees + 360F	The ending position of the progress arc, measured clockwise in degrees from 12 o'clock position. Its value must be bigger than startAngleDegrees, otherwise an exception would be thrown. By default it equals to 'startAngleDegrees + 360'.
strokeWidth: @Dimension(unit = 0) Float = LARGE_STROKE_WIDTH	The stroke width for the progress indicator. The recommended values are CircularProgressIndicatorDefaults.LARGE_STROKE_WIDTH and CircularProgressIndicatorDefaults.SMALL_STROKE_WIDTH.
gapSize: @Dimension(unit = 0) Float = calculateRecommendedGapSize(strokeWidth)	The size in dp of the gap between the ends of the progress indicator and the track. The stroke end caps are not included in this distance.
colors: ProgressIndicatorColors = filledProgressIndicatorColors()	ProgressIndicatorColors that will be used to resolve the indicator and track color for this progress indicator.
size: DimensionBuilders.ContainerDimension = expand()	The bounding box size of this progress indicator, applies to both width and height. The indicator arc and track arc are located on the largest circle that can be inscribed inside. It is highly recommended for the progress indicator in a graphics card to have its size as ExpandedDimensionProp, which is the default, to fill the available space for the best result across different screen sizes. Setting size with a WrappedDimensionProp instance will cause failure and throws an IllegalArgumentException.

Throws
kotlin.IllegalArgumentException	When size is set to be WrappedDimensionProp instance or the provided endAngleDegrees is smaller than the startAngleDegrees.

graphicDataCard

Artifact: androidx.wear.protolayout:protolayout-material3

View Source

fun MaterialScope.graphicDataCard(
    onClick: ModifiersBuilders.Clickable,
    graphic: MaterialScope.() -> LayoutElementBuilders.LayoutElement,
    title: MaterialScope.() -> LayoutElementBuilders.LayoutElement,
    modifier: LayoutModifier = LayoutModifier,
    content: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null,
    height: DimensionBuilders.ContainerDimension = wrapWithMinTapTargetDimension(),
    shape: ModifiersBuilders.Corner = shapes.full,
    colors: CardColors = filledCardColors(),
    style: GraphicDataCardStyle = defaultGraphicDataCardStyle(),
    horizontalAlignment: Int = HORIZONTAL_ALIGN_START,
    contentPadding: ModifiersBuilders.Padding = style.innerPadding
): LayoutElementBuilders.LayoutElement

Opinionated ProtoLayout Material3 graphic data card that offers a slot for graphic data such as progress indicator and up to 2 vertically stacked slots, usually for textual description.

import androidx.wear.protolayout.DimensionBuilders.expand
import androidx.wear.protolayout.material3.CardDefaults.filledVariantCardColors
import androidx.wear.protolayout.material3.GraphicDataCardStyle.Companion.largeGraphicDataCardStyle
import androidx.wear.protolayout.material3.graphicDataCard
import androidx.wear.protolayout.material3.icon
import androidx.wear.protolayout.material3.materialScope
import androidx.wear.protolayout.material3.primaryLayout
import androidx.wear.protolayout.material3.text
import androidx.wear.protolayout.modifiers.LayoutModifier
import androidx.wear.protolayout.modifiers.clickable
import androidx.wear.protolayout.modifiers.contentDescription
import androidx.wear.protolayout.types.layoutString

materialScope(context, deviceConfiguration) {
        primaryLayout(
            mainSlot = {
                graphicDataCard(
                    onClick = clickable,
                    modifier = LayoutModifier.contentDescription("Data Card with graphic"),
                    height = expand(),
                    colors = filledVariantCardColors(),
                    style = largeGraphicDataCardStyle(),
                    title = { text("1,234".layoutString) },
                    content = { icon("steps") },
                    // TODO: b/368272767 - Use CPI here
                    graphic = { text("Run".layoutString) },
                )
            }
        )
    }

Parameters
onClick: ModifiersBuilders.Clickable	Associated Clickable for click events. When the card is clicked it will fire the associated action.
graphic: MaterialScope.() -> LayoutElementBuilders.LayoutElement	A slot for displaying graphic data, such as progress indicator.
title: MaterialScope.() -> LayoutElementBuilders.LayoutElement	A slot for displaying the title of the card, expected to be one line of text. Uses CardColors.title color by default.
modifier: LayoutModifier = LayoutModifier	Modifiers to set to this element. It's highly recommended to set a content description using contentDescription.
content: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null	The optional body content of the card. Uses CardColors.content color by default.
height: DimensionBuilders.ContainerDimension = wrapWithMinTapTargetDimension()	The width of this card. It's highly recommended to set this to expand for the most optimal experience across different screen sizes.
shape: ModifiersBuilders.Corner = shapes.full	Defines the card's shape, in other words the corner radius for this card.
colors: CardColors = filledCardColors()	The colors to be used for a background and inner content of this card. Specified colors can be CardDefaults.filledCardColors for high emphasis card, CardDefaults.filledVariantCardColors for high/medium emphasis card, CardDefaults.filledTonalCardColors for low/medium emphasis card, CardDefaults.imageBackgroundCardColors for card with image as a background or custom built CardColors.
style: GraphicDataCardStyle = defaultGraphicDataCardStyle()	The style which provides the attribute values required for constructing this data card and its inner content. It also provides default style for the inner content, that can be overridden by each content slot. It is highly recommended to use one of GraphicDataCardStyle.defaultGraphicDataCardStyle or GraphicDataCardStyle.largeGraphicDataCardStyle.
horizontalAlignment: Int = HORIZONTAL_ALIGN_START	The horizontal placement of the graphic content. This can be either HORIZONTAL_ALIGN_START (when graphic is on the start side), or HORIZONTAL_ALIGN_END (when it is on the end side).
contentPadding: ModifiersBuilders.Padding = style.innerPadding	The inner padding used to prevent inner content from being too close to the card's edge. It's highly recommended to keep the default.

icon

Artifact: androidx.wear.protolayout:protolayout-material3

View Source

Added in 1.3.0-alpha06

fun MaterialScope.icon(
    protoLayoutResourceId: String,
    size: DimensionBuilders.ImageDimension = defaultIconStyle.size,
    tintColor: LayoutColor = defaultIconStyle.tintColor
): LayoutElementBuilders.LayoutElement

Returns the icon components with the defined style.

Material components provide proper defaults for this icon. In order to take advantage of those, this should be used with the resource ID only: icon("id").

Parameters
protoLayoutResourceId: String	The protolayout resource id of the icon. Node that, this is not an Android resource id.
size: DimensionBuilders.ImageDimension = defaultIconStyle.size	The side of an icon that will be used for width and height.
tintColor: LayoutColor = defaultIconStyle.tintColor	The color used to tint the icon.

iconButton

Artifact: androidx.wear.protolayout:protolayout-material3

View Source

fun MaterialScope.iconButton(
    onClick: ModifiersBuilders.Clickable,
    iconContent: MaterialScope.() -> LayoutElementBuilders.LayoutElement,
    modifier: LayoutModifier = LayoutModifier,
    width: DimensionBuilders.ContainerDimension = wrapWithMinTapTargetDimension(),
    height: DimensionBuilders.ContainerDimension = wrapWithMinTapTargetDimension(),
    shape: ModifiersBuilders.Corner = shapes.full,
    colors: ButtonColors = filledButtonColors(),
    backgroundContent: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null,
    style: IconButtonStyle = defaultIconButtonStyle(),
    contentPadding: ModifiersBuilders.Padding = DEFAULT_CONTENT_PADDING
): LayoutElementBuilders.LayoutElement

Opinionated ProtoLayout Material3 icon button that offers a single slot to take content representing icon, for example icon.

The button is usually either a circular shape with the same width and height, or highly recommended stadium shape occupying available space with width and height set to expand or weight, usually used in the buttonGroup to arrange them

import androidx.wear.protolayout.DimensionBuilders.expand
import androidx.wear.protolayout.material3.button
import androidx.wear.protolayout.material3.buttonGroup
import androidx.wear.protolayout.material3.icon
import androidx.wear.protolayout.material3.iconButton
import androidx.wear.protolayout.material3.materialScope
import androidx.wear.protolayout.material3.primaryLayout
import androidx.wear.protolayout.material3.text
import androidx.wear.protolayout.material3.textButton
import androidx.wear.protolayout.modifiers.LayoutModifier
import androidx.wear.protolayout.modifiers.clickable
import androidx.wear.protolayout.modifiers.contentDescription
import androidx.wear.protolayout.types.layoutString

materialScope(context, deviceConfiguration) {
        primaryLayout(
            mainSlot = {
                buttonGroup {
                    buttonGroupItem {
                        iconButton(
                            onClick = clickable,
                            modifier =
                                LayoutModifier.contentDescription(
                                    "Big button with image background"
                                ),
                            width = expand(),
                            height = expand(),
                            iconContent = { icon("id1") }
                        )
                    }
                    buttonGroupItem {
                        iconButton(
                            onClick = clickable,
                            modifier =
                                LayoutModifier.contentDescription(
                                    "Big button with image background"
                                ),
                            width = expand(),
                            height = expand(),
                            shape = shapes.large,
                            iconContent = { icon("id2") }
                        )
                    }
                    buttonGroupItem {
                        textButton(
                            onClick = clickable,
                            modifier =
                                LayoutModifier.contentDescription(
                                    "Big button with image background"
                                ),
                            width = expand(),
                            height = expand(),
                            shape = shapes.large,
                            labelContent = { text("Dec".layoutString) }
                        )
                    }
                }
            }
        )
    }

Parameters
onClick: ModifiersBuilders.Clickable	Associated Clickable for click events. When the button is clicked it will fire the associated action.
iconContent: MaterialScope.() -> LayoutElementBuilders.LayoutElement	The icon slot for content displayed in this button. It is recommended to use default styling that is automatically provided by only calling icon with the resource ID.
modifier: LayoutModifier = LayoutModifier	Modifiers to set to this element. It's highly recommended to set a content description using contentDescription.
width: DimensionBuilders.ContainerDimension = wrapWithMinTapTargetDimension()	The width of this button. It's highly recommended to set this to expand or weight
height: DimensionBuilders.ContainerDimension = wrapWithMinTapTargetDimension()	The height of this button. It's highly recommended to set this to expand or weight
shape: ModifiersBuilders.Corner = shapes.full	Defines the button's shape, in other words the corner radius for this button.
colors: ButtonColors = filledButtonColors()	The colors used for this button. If not set, ButtonDefaults.filledButtonColors will be used as high emphasis button. Other recommended colors are ButtonDefaults.filledTonalButtonColors and ButtonDefaults.filledVariantButtonColors. If using custom colors, it is important to choose a color pair from same role to ensure accessibility with sufficient color contrast.
backgroundContent: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null	The background object to be used behind the content in the button. It is recommended to use the default styling that is automatically provided by only calling backgroundImage with the content. It can be combined with the specified ButtonColors.container behind it.
style: IconButtonStyle = defaultIconButtonStyle()	The style which provides the attribute values required for constructing this icon button its inner content. It also provides default style for the inner content, that can be overridden by each content slot.
contentPadding: ModifiersBuilders.Padding = DEFAULT_CONTENT_PADDING	The inner padding used to prevent inner content from being too close to the button's edge. It's highly recommended to keep the default.

iconDataCard

Artifact: androidx.wear.protolayout:protolayout-material3

View Source

fun MaterialScope.iconDataCard(
    onClick: ModifiersBuilders.Clickable,
    title: MaterialScope.() -> LayoutElementBuilders.LayoutElement,
    modifier: LayoutModifier = LayoutModifier,
    content: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null,
    secondaryIcon: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null,
    width: DimensionBuilders.ContainerDimension = wrapWithMinTapTargetDimension(),
    height: DimensionBuilders.ContainerDimension = wrapWithMinTapTargetDimension(),
    shape: ModifiersBuilders.Corner = shapes.large,
    colors: CardColors = filledCardColors(),
    backgroundContent: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null,
    style: DataCardStyle = if (secondaryIcon == null) defaultCompactDataCardStyle() else defaultDataCardStyle(),
    titleContentPlacement: TitleContentPlacementInDataCard = TitleContentPlacementInDataCard.Bottom,
    contentPadding: ModifiersBuilders.Padding = style.innerPadding
): LayoutElementBuilders.LayoutElement

Opinionated ProtoLayout Material3 data card that offers up to 3 vertically stacked slots, usually text or numeral based, with icon.

Slots can have multiple placements, depending on their presence and titleContentPlacement:

• If secondaryIcon are set, it will be placed first when titleContentPlacement is set to TitleContentPlacementInDataCard.Bottom, or last if titleContentPlacement is set to TitleContentPlacementInDataCard.Top.

• If secondaryIcon is not set, this textDataCard is considered as compact data card, with title and content only.

This card works well in buttonGroup with cards width and height set to expand.

import androidx.wear.protolayout.DimensionBuilders.expand
import androidx.wear.protolayout.DimensionBuilders.weight
import androidx.wear.protolayout.material3.CardDefaults.filledTonalCardColors
import androidx.wear.protolayout.material3.CardDefaults.filledVariantCardColors
import androidx.wear.protolayout.material3.DataCardStyle.Companion.extraLargeDataCardStyle
import androidx.wear.protolayout.material3.DataCardStyle.Companion.largeCompactDataCardStyle
import androidx.wear.protolayout.material3.button
import androidx.wear.protolayout.material3.buttonGroup
import androidx.wear.protolayout.material3.icon
import androidx.wear.protolayout.material3.iconDataCard
import androidx.wear.protolayout.material3.materialScope
import androidx.wear.protolayout.material3.primaryLayout
import androidx.wear.protolayout.material3.text
import androidx.wear.protolayout.material3.textDataCard
import androidx.wear.protolayout.modifiers.LayoutModifier
import androidx.wear.protolayout.modifiers.clickable
import androidx.wear.protolayout.modifiers.contentDescription
import androidx.wear.protolayout.types.layoutString

materialScope(context, deviceConfiguration) {
        primaryLayout(
            mainSlot = {
                buttonGroup {
                    buttonGroupItem {
                        textDataCard(
                            onClick = clickable,
                            modifier = LayoutModifier.contentDescription("Data Card with text"),
                            width = weight(1f),
                            height = expand(),
                            colors = filledTonalCardColors(),
                            style = extraLargeDataCardStyle(),
                            title = { this.text("1km".layoutString) },
                            content = { this.text("Run".layoutString) },
                            secondaryText = { this.text("Nice!".layoutString) }
                        )
                    }
                    buttonGroupItem {
                        iconDataCard(
                            onClick = clickable,
                            modifier = LayoutModifier.contentDescription("Data Card with icon"),
                            width = weight(1f),
                            height = expand(),
                            colors = filledTonalCardColors(),
                            style = extraLargeDataCardStyle(),
                            title = { this.text("2km".layoutString) },
                            secondaryIcon = { icon("id") },
                            content = { this.text("Run".layoutString) },
                        )
                    }
                    buttonGroupItem {
                        textDataCard(
                            onClick = clickable,
                            modifier =
                                LayoutModifier.contentDescription(
                                    "Compact Data Card without icon or secondary label"
                                ),
                            width = weight(3f),
                            height = expand(),
                            colors = filledVariantCardColors(),
                            style = largeCompactDataCardStyle(),
                            title = { this.text("10:30".layoutString) },
                            content = { this.text("PM".layoutString) },
                        )
                    }
                }
            }
        )
    }

Parameters
onClick: ModifiersBuilders.Clickable	Associated Clickable for click events. When the card is clicked it will fire the associated action.
title: MaterialScope.() -> LayoutElementBuilders.LayoutElement	A slot for displaying the title of the card, expected to be one line of text. Uses CardColors.title color by default.
modifier: LayoutModifier = LayoutModifier	Modifiers to set to this element. It's highly recommended to set a content description using contentDescription.
content: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null	The optional body content of the card. Uses CardColors.content color by default.
secondaryIcon: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null	An optional slot for displaying small icon, such as secondaryIcon. Uses CardColors.secondaryIcon tint color by default.
width: DimensionBuilders.ContainerDimension = wrapWithMinTapTargetDimension()	The width of this card. It's highly recommended to set this to expand or weight for the most optimal experience across different screen sizes.
height: DimensionBuilders.ContainerDimension = wrapWithMinTapTargetDimension()	The height of this card. It's highly recommended to set this to expand for the most optimal experience across different screen sizes.
shape: ModifiersBuilders.Corner = shapes.large	Defines the card's shape, in other words the corner radius for this card.
colors: CardColors = filledCardColors()	The colors to be used for a background and inner content of this card. If the background image is also specified, the image will be laid out on top of the background color. In case of the fully opaque background image, then the background color will not be shown. Specified colors can be CardDefaults.filledCardColors for high emphasis card, CardDefaults.filledVariantCardColors for high/medium emphasis card, CardDefaults.filledTonalCardColors for low/medium emphasis card, CardDefaults.imageBackgroundCardColors for card with image as a background or custom built CardColors.
backgroundContent: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null	The background object to be used behind the content in the card. It is recommended to use the default styling that is automatically provided by only calling backgroundImage with the content. It can be combined with the specified colors's background color behind it.
style: DataCardStyle = if (secondaryIcon == null) defaultCompactDataCardStyle() else defaultDataCardStyle()	The style which provides the attribute values required for constructing this data card and its inner content. It also provides default style for the inner content, that can be overridden by each content slot. It is highly recommended to use one of DataCardStyle.smallDataCardStyle, DataCardStyle.defaultDataCardStyle, DataCardStyle.largeDataCardStyle or DataCardStyle.extraLargeDataCardStyle styles when secondaryIconis present. If it's not present, it's highly recommended to use DataCardStyle.smallCompactDataCardStyle, DataCardStyle.defaultCompactDataCardStyle or DataCardStyle.largeCompactDataCardStyle.
titleContentPlacement: TitleContentPlacementInDataCard = TitleContentPlacementInDataCard.Bottom	The placement of the title and content slots, relative to the given secondaryIcon.
contentPadding: ModifiersBuilders.Padding = style.innerPadding	The inner padding used to prevent inner content from being too close to the card's edge. It's highly recommended to keep the default.

iconEdgeButton

Artifact: androidx.wear.protolayout:protolayout-material3

View Source

fun MaterialScope.iconEdgeButton(
    onClick: ModifiersBuilders.Clickable,
    modifier: LayoutModifier = LayoutModifier,
    colors: ButtonColors = filledButtonColors(),
    iconContent: MaterialScope.() -> LayoutElementBuilders.LayoutElement
): LayoutElementBuilders.LayoutElement

ProtoLayout Material3 component edge button that offers a single slot to take an icon or similar round, small content.

The edge button is intended to be used at the bottom of a round screen. It has a special shape with its bottom almost follows the screen's curvature. It has fixed height, and takes 1 line of text or a single icon. This button represents the most important action on the screen, and it must occupy the whole horizontal space in its position as well as being anchored to the screen bottom.

This component is not intended to be used with an image background.

import androidx.wear.protolayout.material3.button
import androidx.wear.protolayout.material3.icon
import androidx.wear.protolayout.material3.iconEdgeButton
import androidx.wear.protolayout.material3.materialScope
import androidx.wear.protolayout.material3.text
import androidx.wear.protolayout.modifiers.LayoutModifier
import androidx.wear.protolayout.modifiers.clickable
import androidx.wear.protolayout.modifiers.contentDescription

materialScope(context, deviceConfiguration) {
        iconEdgeButton(
            onClick = clickable,
            modifier = LayoutModifier.contentDescription("Description of a button")
        ) {
            icon(protoLayoutResourceId = "id")
        }
    }

Parameters
onClick: ModifiersBuilders.Clickable	Associated Clickable for click events. When the button is clicked it will fire the associated action.
modifier: LayoutModifier = LayoutModifier	Modifiers to set to this element. It's highly recommended to set a content description using contentDescription.
colors: ButtonColors = filledButtonColors()	The colors used for this button. If not set, ButtonDefaults.filledButtonColors will be used as high emphasis button. Other recommended colors are ButtonDefaults.filledTonalButtonColors and ButtonDefaults.filledVariantButtonColors. If using custom colors, it is important to choose a color pair from same role to ensure accessibility with sufficient color contrast.
iconContent: MaterialScope.() -> LayoutElementBuilders.LayoutElement	The icon slot for content displayed in this button. It is recommended to use default styling that is automatically provided by only calling icon with the resource ID.

primaryLayout

Artifact: androidx.wear.protolayout:protolayout-material3

View Source

fun MaterialScope.primaryLayout(
    mainSlot: MaterialScope.() -> LayoutElementBuilders.LayoutElement,
    titleSlot: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null,
    bottomSlot: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null,
    labelForBottomSlot: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null,
    onClick: ModifiersBuilders.Clickable? = null
): LayoutElementBuilders.LayoutElement

ProtoLayout Material3 full screen layout that represents a suggested Material3 layout style that is responsive and takes care of the elements placement, together with the recommended margin and padding applied.

This layout is meant to occupy the whole screen, so nothing else should be added on top of it.

On the top, there is an icon that will be automatically placed by the system, followed by the optional title slot. The icon slot needs to be reserved for the whole ProtoLayout Layout and no other content should be added at the top of the screen as it will be overlapped with the system placed icon.

At the bottom, there is an optional fixed slot for either {@link EdgeButton} as a main action or small non tappable content.

The middle of the layout is main content, that will fill the available space. For the best results across different screen sizes, it's recommended that this content's dimension are also DimensionBuilders.expand or DimensionBuilders.weight. Additional content in the main one can be added after a 225dp breakpoint.

import androidx.wear.protolayout.LayoutElementBuilders
import androidx.wear.protolayout.LayoutElementBuilders.LayoutElement
import androidx.wear.protolayout.ModifiersBuilders
import androidx.wear.protolayout.material3.button
import androidx.wear.protolayout.material3.buttonGroup
import androidx.wear.protolayout.material3.icon
import androidx.wear.protolayout.material3.iconEdgeButton
import androidx.wear.protolayout.material3.materialScope
import androidx.wear.protolayout.material3.primaryLayout
import androidx.wear.protolayout.material3.text
import androidx.wear.protolayout.modifiers.LayoutModifier
import androidx.wear.protolayout.modifiers.clickable
import androidx.wear.protolayout.modifiers.contentDescription
import androidx.wear.protolayout.types.layoutString

materialScope(context, deviceConfiguration) {
        primaryLayout(
            titleSlot = { text("App title".layoutString) },
            mainSlot = {
                buttonGroup {
                    // To be populated with proper components
                    buttonGroupItem {
                        LayoutElementBuilders.Box.Builder()
                            .setModifiers(
                                ModifiersBuilders.Modifiers.Builder()
                                    .setBackground(
                                        ModifiersBuilders.Background.Builder()
                                            .setCorner(shapes.full)
                                            .build()
                                    )
                                    .build()
                            )
                            .build()
                    }
                }
            },
            bottomSlot = {
                iconEdgeButton(
                    onClick = clickable,
                    modifier = LayoutModifier.contentDescription("Description")
                ) {
                    icon("id")
                }
            }
        )
    }

Parameters
mainSlot: MaterialScope.() -> LayoutElementBuilders.LayoutElement	The main, central content for this layout. It's recommended for this content to fill the available width and height for the best result across different screen size. This layout places proper padding to prevent content from being cropped by the screen. Note that depending on the corner shapes and different elements on the screen, there might be a need to change padding on some of the elements in this slot. The content passed here can also have an additional content value added to it, after 225dp breakpoint. Some of the examples of content that can be passed in here are: * buttonGroup with buttons or cards * two [buttonGroup * Expanded card
titleSlot: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null	The app title in the top slot, just below the icon. This should be one line of text with Typography.TITLE_SMALL typography, describing the main purpose of this layout. Title is an optional slot which can be omitted to make space for other elements. Defaults to ColorScheme.onBackground color.
bottomSlot: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null	The content for bottom slot in this layout, that will be anchored to the bottom edge of the screen. This should be either a small non tappable content such as Text with optional label for it or tappable main action with textEdgeButton or iconEdgeButton which is designed to have its bottom following the screen's curvature. This bottom slot is optional, if unset the main content will expand more towards the edge of the screen.
labelForBottomSlot: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null	The label displayed just above the bottomSlot. Default will be one line of text with Typography.TITLE_SMALL typography, ColorScheme.onSurface color that should contain additional description of this layout. When the bottomSlot is not provided or it an edge button, the given label will be ignored.
onClick: ModifiersBuilders.Clickable? = null	The clickable action for whole layout. If any area (outside of other added tappable components) is clicked, it will fire the associated action.

text

Artifact: androidx.wear.protolayout:protolayout-material3

View Source

Added in 1.3.0-alpha06

fun MaterialScope.text(
    text: LayoutString,
    typography: Int = defaultTextElementStyle.typography,
    color: LayoutColor = defaultTextElementStyle.color,
    italic: Boolean = defaultTextElementStyle.italic,
    underline: Boolean = defaultTextElementStyle.underline,
    scalable: Boolean = defaultTextElementStyle.scalable,
    maxLines: Int = defaultTextElementStyle.maxLines,
    multilineAlignment: Int = defaultTextElementStyle.multilineAlignment,
    overflow: Int = defaultTextElementStyle.overflow,
    modifiers: LayoutModifier = LayoutModifier
): LayoutElementBuilders.LayoutElement

ProtoLayout component that represents text object holding any information.

There are pre-defined typography styles that can be obtained from Materials token system in Typography.

import androidx.wear.protolayout.material3.Typography
import androidx.wear.protolayout.material3.materialScope
import androidx.wear.protolayout.material3.text
import androidx.wear.protolayout.types.layoutString

materialScope(context, deviceConfiguration) {
        text(text = "Hello Material3".layoutString, typography = Typography.DISPLAY_LARGE)
    }

import androidx.wear.protolayout.expression.DynamicBuilders.DynamicString
import androidx.wear.protolayout.material3.Typography
import androidx.wear.protolayout.material3.materialScope
import androidx.wear.protolayout.material3.text
import androidx.wear.protolayout.types.LayoutString
import androidx.wear.protolayout.types.asLayoutConstraint

materialScope(context, deviceConfiguration) {
        this.text(
            text =
                LayoutString(
                    "Static",
                    DynamicString.constant("Dynamic"),
                    "LongestConstraint".asLayoutConstraint()
                ),
            typography = Typography.DISPLAY_LARGE,
            color = colorScheme.tertiary,
            underline = true,
            maxLines = 5
        )
    }

Parameters
text: LayoutString	The text content for this component.
typography: Int = defaultTextElementStyle.typography	The typography from Typography to be applied to this text. This will have predefined default value specified by each components that uses this text, to achieve the recommended look.
color: LayoutColor = defaultTextElementStyle.color	The color to be applied to this text. It is recommended to use predefined default styles created by each component or getColorProp(token).
italic: Boolean = defaultTextElementStyle.italic	Whether text should be displayed as italic.
underline: Boolean = defaultTextElementStyle.underline	Whether text should be displayed as underlined.
scalable: Boolean = defaultTextElementStyle.scalable	Whether text should scale with the user font size.
maxLines: Int = defaultTextElementStyle.maxLines	The maximum number of lines that text can occupy.
multilineAlignment: Int = defaultTextElementStyle.multilineAlignment	The horizontal alignment of the multiple lines of text.
overflow: Int = defaultTextElementStyle.overflow	The overflow strategy when text doesn't have enough space to be shown.
modifiers: LayoutModifier = LayoutModifier	Modifiers to set to this element.

textButton

Artifact: androidx.wear.protolayout:protolayout-material3

View Source

fun MaterialScope.textButton(
    onClick: ModifiersBuilders.Clickable,
    labelContent: MaterialScope.() -> LayoutElementBuilders.LayoutElement,
    modifier: LayoutModifier = LayoutModifier,
    width: DimensionBuilders.ContainerDimension = wrapWithMinTapTargetDimension(),
    height: DimensionBuilders.ContainerDimension = wrapWithMinTapTargetDimension(),
    shape: ModifiersBuilders.Corner = shapes.full,
    colors: ButtonColors = filledButtonColors(),
    backgroundContent: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null,
    style: TextButtonStyle = defaultTextButtonStyle(),
    contentPadding: ModifiersBuilders.Padding = DEFAULT_CONTENT_PADDING
): LayoutElementBuilders.LayoutElement

Opinionated ProtoLayout Material3 text button that offers a single slot to take content representing short text, for example text.

The button is usually either a circular shape with the same width and height, or highly recommended stadium shape occupying available space with width and height set to expand or weight, usually used in the buttonGroup to arrange them.

import androidx.wear.protolayout.DimensionBuilders.expand
import androidx.wear.protolayout.material3.button
import androidx.wear.protolayout.material3.buttonGroup
import androidx.wear.protolayout.material3.icon
import androidx.wear.protolayout.material3.iconButton
import androidx.wear.protolayout.material3.materialScope
import androidx.wear.protolayout.material3.primaryLayout
import androidx.wear.protolayout.material3.text
import androidx.wear.protolayout.material3.textButton
import androidx.wear.protolayout.modifiers.LayoutModifier
import androidx.wear.protolayout.modifiers.clickable
import androidx.wear.protolayout.modifiers.contentDescription
import androidx.wear.protolayout.types.layoutString

materialScope(context, deviceConfiguration) {
        primaryLayout(
            mainSlot = {
                buttonGroup {
                    buttonGroupItem {
                        iconButton(
                            onClick = clickable,
                            modifier =
                                LayoutModifier.contentDescription(
                                    "Big button with image background"
                                ),
                            width = expand(),
                            height = expand(),
                            iconContent = { icon("id1") }
                        )
                    }
                    buttonGroupItem {
                        iconButton(
                            onClick = clickable,
                            modifier =
                                LayoutModifier.contentDescription(
                                    "Big button with image background"
                                ),
                            width = expand(),
                            height = expand(),
                            shape = shapes.large,
                            iconContent = { icon("id2") }
                        )
                    }
                    buttonGroupItem {
                        textButton(
                            onClick = clickable,
                            modifier =
                                LayoutModifier.contentDescription(
                                    "Big button with image background"
                                ),
                            width = expand(),
                            height = expand(),
                            shape = shapes.large,
                            labelContent = { text("Dec".layoutString) }
                        )
                    }
                }
            }
        )
    }

Parameters
onClick: ModifiersBuilders.Clickable	Associated Clickable for click events. When the button is clicked it will fire the associated action.
labelContent: MaterialScope.() -> LayoutElementBuilders.LayoutElement	The text slot for content displayed in this button. It is recommended to use default styling that is automatically provided by only calling text with the resource ID. This should be small, usually up to 3 characters text.
modifier: LayoutModifier = LayoutModifier	Modifiers to set to this element. It's highly recommended to set a content description using contentDescription.
width: DimensionBuilders.ContainerDimension = wrapWithMinTapTargetDimension()	The width of this button. It's highly recommended to set this to expand or weight
height: DimensionBuilders.ContainerDimension = wrapWithMinTapTargetDimension()	The height of this button. It's highly recommended to set this to expand or weight
shape: ModifiersBuilders.Corner = shapes.full	Defines the button's shape, in other words the corner radius for this button.
colors: ButtonColors = filledButtonColors()	The colors used for this button. If not set, ButtonDefaults.filledButtonColors will be used as high emphasis button. Other recommended colors are ButtonDefaults.filledTonalButtonColors and ButtonDefaults.filledVariantButtonColors. If using custom colors, it is important to choose a color pair from same role to ensure accessibility with sufficient color contrast.
backgroundContent: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null	The background object to be used behind the content in the button. It is recommended to use the default styling that is automatically provided by only calling backgroundImage with the content. It can be combined with the specified ButtonColors.container behind it.
style: TextButtonStyle = defaultTextButtonStyle()	The style which provides the attribute values required for constructing this icon button its inner content. It also provides default style for the inner content, that can be overridden by each content slot.
contentPadding: ModifiersBuilders.Padding = DEFAULT_CONTENT_PADDING	The inner padding used to prevent inner content from being too close to the button's edge. It's highly recommended to keep the default.

textDataCard

Artifact: androidx.wear.protolayout:protolayout-material3

View Source

fun MaterialScope.textDataCard(
    onClick: ModifiersBuilders.Clickable,
    title: MaterialScope.() -> LayoutElementBuilders.LayoutElement,
    modifier: LayoutModifier = LayoutModifier,
    content: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null,
    secondaryText: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null,
    width: DimensionBuilders.ContainerDimension = wrapWithMinTapTargetDimension(),
    height: DimensionBuilders.ContainerDimension = wrapWithMinTapTargetDimension(),
    shape: ModifiersBuilders.Corner = shapes.large,
    colors: CardColors = filledCardColors(),
    backgroundContent: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null,
    style: DataCardStyle = if (secondaryText == null) defaultCompactDataCardStyle() else defaultDataCardStyle(),
    contentPadding: ModifiersBuilders.Padding = style.innerPadding
): LayoutElementBuilders.LayoutElement

Opinionated ProtoLayout Material3 data card that offers up to 3 vertically stacked slots, usually text or numeral based.

This card works well in buttonGroup with cards width and height is set to expand.

import androidx.wear.protolayout.DimensionBuilders.expand
import androidx.wear.protolayout.DimensionBuilders.weight
import androidx.wear.protolayout.material3.CardDefaults.filledTonalCardColors
import androidx.wear.protolayout.material3.CardDefaults.filledVariantCardColors
import androidx.wear.protolayout.material3.DataCardStyle.Companion.extraLargeDataCardStyle
import androidx.wear.protolayout.material3.DataCardStyle.Companion.largeCompactDataCardStyle
import androidx.wear.protolayout.material3.button
import androidx.wear.protolayout.material3.buttonGroup
import androidx.wear.protolayout.material3.icon
import androidx.wear.protolayout.material3.iconDataCard
import androidx.wear.protolayout.material3.materialScope
import androidx.wear.protolayout.material3.primaryLayout
import androidx.wear.protolayout.material3.text
import androidx.wear.protolayout.material3.textDataCard
import androidx.wear.protolayout.modifiers.LayoutModifier
import androidx.wear.protolayout.modifiers.clickable
import androidx.wear.protolayout.modifiers.contentDescription
import androidx.wear.protolayout.types.layoutString

materialScope(context, deviceConfiguration) {
        primaryLayout(
            mainSlot = {
                buttonGroup {
                    buttonGroupItem {
                        textDataCard(
                            onClick = clickable,
                            modifier = LayoutModifier.contentDescription("Data Card with text"),
                            width = weight(1f),
                            height = expand(),
                            colors = filledTonalCardColors(),
                            style = extraLargeDataCardStyle(),
                            title = { this.text("1km".layoutString) },
                            content = { this.text("Run".layoutString) },
                            secondaryText = { this.text("Nice!".layoutString) }
                        )
                    }
                    buttonGroupItem {
                        iconDataCard(
                            onClick = clickable,
                            modifier = LayoutModifier.contentDescription("Data Card with icon"),
                            width = weight(1f),
                            height = expand(),
                            colors = filledTonalCardColors(),
                            style = extraLargeDataCardStyle(),
                            title = { this.text("2km".layoutString) },
                            secondaryIcon = { icon("id") },
                            content = { this.text("Run".layoutString) },
                        )
                    }
                    buttonGroupItem {
                        textDataCard(
                            onClick = clickable,
                            modifier =
                                LayoutModifier.contentDescription(
                                    "Compact Data Card without icon or secondary label"
                                ),
                            width = weight(3f),
                            height = expand(),
                            colors = filledVariantCardColors(),
                            style = largeCompactDataCardStyle(),
                            title = { this.text("10:30".layoutString) },
                            content = { this.text("PM".layoutString) },
                        )
                    }
                }
            }
        )
    }

Parameters
onClick: ModifiersBuilders.Clickable	Associated Clickable for click events. When the card is clicked it will fire the associated action.
title: MaterialScope.() -> LayoutElementBuilders.LayoutElement	A slot for displaying the title of the card, expected to be one line of text. Uses CardColors.title color by default.
modifier: LayoutModifier = LayoutModifier	Modifiers to set to this element. It's highly recommended to set a content description using contentDescription.
content: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null	The optional body content of the card. Uses CardColors.content color by default.
secondaryText: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null	An optional slot for displaying short, secondary text. Uses CardColors.secondaryText color by default.
width: DimensionBuilders.ContainerDimension = wrapWithMinTapTargetDimension()	The width of this card. It's highly recommended to set this to expand or weight for the most optimal experience across different screen sizes.
height: DimensionBuilders.ContainerDimension = wrapWithMinTapTargetDimension()	The height of this card. It's highly recommended to set this to expand for the most optimal experience across different screen sizes.
shape: ModifiersBuilders.Corner = shapes.large	Defines the card's shape, in other words the corner radius for this card.
colors: CardColors = filledCardColors()	The colors to be used for a background and inner content of this card. If the background image is also specified, the image will be laid out on top of the background color. In case of the fully opaque background image, then the background color will not be shown. Specified colors can be CardDefaults.filledCardColors for high emphasis card, CardDefaults.filledVariantCardColors for high/medium emphasis card, CardDefaults.filledTonalCardColors for low/medium emphasis card, CardDefaults.imageBackgroundCardColors for card with image as a background or custom built CardColors.
backgroundContent: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null	The background object to be used behind the content in the card. It is recommended to use the default styling that is automatically provided by only calling backgroundImage with the content. It can be combined with the specified colors's background color behind it.
style: DataCardStyle = if (secondaryText == null) defaultCompactDataCardStyle() else defaultDataCardStyle()	The style which provides the attribute values required for constructing this data card and its inner content. It also provides default style for the inner content, that can be overridden by each content slot. It is highly recommended to use one of DataCardStyle.smallDataCardStyle, DataCardStyle.defaultDataCardStyle, DataCardStyle.largeDataCardStyle or DataCardStyle.extraLargeDataCardStyle styles when either icon or secondaryText are present. If they are not present, it's highly recommended to use DataCardStyle.smallCompactDataCardStyle, DataCardStyle.defaultCompactDataCardStyle or DataCardStyle.largeCompactDataCardStyle.
contentPadding: ModifiersBuilders.Padding = style.innerPadding	The inner padding used to prevent inner content from being too close to the card's edge. It's highly recommended to keep the default.

textEdgeButton

Artifact: androidx.wear.protolayout:protolayout-material3

View Source

fun MaterialScope.textEdgeButton(
    onClick: ModifiersBuilders.Clickable,
    modifier: LayoutModifier = LayoutModifier,
    colors: ButtonColors = filledButtonColors(),
    labelContent: MaterialScope.() -> LayoutElementBuilders.LayoutElement
): LayoutElementBuilders.LayoutElement

ProtoLayout Material3 component edge button that offers a single slot to take a text or similar long and wide content.

The edge button is intended to be used at the bottom of a round screen. It has a special shape with its bottom almost follows the screen's curvature. It has fixed height, and takes 1 line of text or a single icon. This button represents the most important action on the screen, and it must occupy the whole horizontal space in its position as well as being anchored to the screen bottom.

This component is not intended to be used with an image background.

import androidx.wear.protolayout.material3.button
import androidx.wear.protolayout.material3.materialScope
import androidx.wear.protolayout.material3.text
import androidx.wear.protolayout.material3.textEdgeButton
import androidx.wear.protolayout.modifiers.LayoutModifier
import androidx.wear.protolayout.modifiers.clickable
import androidx.wear.protolayout.modifiers.contentDescription
import androidx.wear.protolayout.types.layoutString

materialScope(context, deviceConfiguration) {
        textEdgeButton(
            onClick = clickable,
            modifier = LayoutModifier.contentDescription("Description of a button")
        ) {
            text("Hello".layoutString)
        }
    }

Parameters
onClick: ModifiersBuilders.Clickable	Associated Clickable for click events. When the button is clicked it will fire the associated action.
modifier: LayoutModifier = LayoutModifier	Modifiers to set to this element. It's highly recommended to set a content description using contentDescription.
colors: ButtonColors = filledButtonColors()	The colors used for this button. If not set, ButtonDefaults.filledButtonColors will be used as high emphasis button. Other recommended colors are ButtonDefaults.filledTonalButtonColors and ButtonDefaults.filledVariantButtonColors. If using custom colors, it is important to choose a color pair from same role to ensure accessibility with sufficient color contrast.
labelContent: MaterialScope.() -> LayoutElementBuilders.LayoutElement	The label slot for content displayed in this button. It is recommended to use default styling that is automatically provided by only calling text with the content.

titleCard

Artifact: androidx.wear.protolayout:protolayout-material3

View Source

fun MaterialScope.titleCard(
    onClick: ModifiersBuilders.Clickable,
    title: MaterialScope.() -> LayoutElementBuilders.LayoutElement,
    modifier: LayoutModifier = LayoutModifier,
    content: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null,
    time: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null,
    height: DimensionBuilders.ContainerDimension = wrapWithMinTapTargetDimension(),
    shape: ModifiersBuilders.Corner = if (deviceConfiguration.screenWidthDp.isBreakpoint()) shapes.extraLarge else shapes.large,
    colors: CardColors = filledCardColors(),
    backgroundContent: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null,
    style: TitleCardStyle = defaultTitleCardStyle(),
    contentPadding: ModifiersBuilders.Padding = style.innerPadding,
    horizontalAlignment: Int = if (time == null) HORIZONTAL_ALIGN_CENTER else HORIZONTAL_ALIGN_START
): LayoutElementBuilders.LayoutElement

Opinionated ProtoLayout Material3 title card that offers 1 to 3 slots, usually text based.

Those are vertically stacked title and content, and additional side slot for a time.

import androidx.wear.protolayout.DimensionBuilders.expand
import androidx.wear.protolayout.material3.CardDefaults.filledVariantCardColors
import androidx.wear.protolayout.material3.TitleCardStyle.Companion.largeTitleCardStyle
import androidx.wear.protolayout.material3.card
import androidx.wear.protolayout.material3.materialScope
import androidx.wear.protolayout.material3.primaryLayout
import androidx.wear.protolayout.material3.text
import androidx.wear.protolayout.material3.titleCard
import androidx.wear.protolayout.modifiers.LayoutModifier
import androidx.wear.protolayout.modifiers.clickable
import androidx.wear.protolayout.modifiers.contentDescription
import androidx.wear.protolayout.types.layoutString

materialScope(context, deviceConfiguration) {
        primaryLayout(
            mainSlot = {
                titleCard(
                    onClick = clickable,
                    modifier = LayoutModifier.contentDescription("Title Card"),
                    height = expand(),
                    colors = filledVariantCardColors(),
                    style = largeTitleCardStyle(),
                    title = { text("This is title of the title card".layoutString) },
                    time = { text("NOW".layoutString) },
                    content = { text("Content of the Card!".layoutString) }
                )
            }
        )
    }

Parameters
onClick: ModifiersBuilders.Clickable	Associated Clickable for click events. When the card is clicked it will fire the associated action.
title: MaterialScope.() -> LayoutElementBuilders.LayoutElement	A slot for displaying the title of the card, expected to be one or two lines of text. Uses CardColors.title color by default.
modifier: LayoutModifier = LayoutModifier	Modifiers to set to this element. It's highly recommended to set a content description using contentDescription.
content: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null	The optional body content of the card. Uses CardColors.content color by default.
time: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null	An optional slot for displaying the time relevant to the contents of the card, expected to be a short piece of text. Uses CardColors.time color by default.
height: DimensionBuilders.ContainerDimension = wrapWithMinTapTargetDimension()	The height of this card. It's highly recommended to set this to expand or weight
shape: ModifiersBuilders.Corner = if (deviceConfiguration.screenWidthDp.isBreakpoint()) shapes.extraLarge else shapes.large	Defines the card's shape, in other words the corner radius for this card.
colors: CardColors = filledCardColors()	The colors to be used for a background and inner content of this card. If the background image is also specified, the image will be laid out on top of the background color. In case of the fully opaque background image, then the background color will not be shown. Specified colors can be CardDefaults.filledCardColors for high emphasis card, CardDefaults.filledVariantCardColors for high/medium emphasis card, CardDefaults.filledTonalCardColors for low/medium emphasis card, CardDefaults.imageBackgroundCardColors for card with image as a background or custom built CardColors.
backgroundContent: (MaterialScope.() -> LayoutElementBuilders.LayoutElement)? = null	The background object to be used behind the content in the card. It is recommended to use the default styling that is automatically provided by only calling backgroundImage with the content. It can be combined with the specified colors's background color behind it.
style: TitleCardStyle = defaultTitleCardStyle()	The style which provides the attribute values required for constructing this title card and its inner content. It also provides default style for the inner content, that can be overridden by each content slot.
contentPadding: ModifiersBuilders.Padding = style.innerPadding	The inner padding used to prevent inner content from being too close to the card's edge. It's highly recommended to keep the default.
horizontalAlignment: Int = if (time == null) HORIZONTAL_ALIGN_CENTER else HORIZONTAL_ALIGN_START	The horizontal alignment of title and content. Default to centered when time is not present. When time is present, defaults to start aligned, which is highly recommended.

withOpacity

Artifact: androidx.wear.protolayout:protolayout-material3

View Source

Added in 1.3.0-alpha06

fun LayoutColor.withOpacity(ratio: @FloatRange(from = 0.0, to = 1.0) Float): LayoutColor

Changes the opacity/transparency of the given color.

Note that this only looks at the static value of the LayoutColor, any dynamic value will be ignored.