Material Design 3 for Compose hits stable

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Posted by Gurupreet Singh, Developer Advocate; Android

At present marks the primary secure launch of Compose Materials 3. The library lets you construct Jetpack Compose UIs with Materials Design 3, the following evolution of Materials Design. You can begin utilizing Materials Design 3 in your apps at this time!

Observe: The phrases “Materials Design 3”, “Materials 3”, and “M3” are used interchangeably.

Materials 3 contains up to date theming and elements, unique options like dynamic coloration, and is designed to be aligned with the most recent Android visible model and system UI.

A number of apps utilizing Materials Design 3 theming

You can begin utilizing Materials Design 3 in your apps by including the Compose Materials 3 dependency to your construct.gradle information:

// Add dependency in module construct.gradle

implementation “androidx.compose.material3:material3:$material3_version”

Observe: See the most recent M3 variations on the Compose Materials 3 releases web page.

Materials 3 brings intensive, finer grained coloration customisation, and comes with each gentle and darkish coloration scheme assist out of the field. The Materials Theme Builder lets you generate a customized coloration scheme utilizing core colours, and optionally export Compose theming code. You’ll be able to learn extra about coloration schemes and coloration roles.

Materials Theme Builder to export Materials 3 coloration schemes

Dynamic coloration derives from the consumer’s wallpaper. The colours might be utilized to apps and the system UI.

Dynamic coloration is accessible on Android 12 (API degree 31) and above. If dynamic coloration is accessible, you possibly can arrange a dynamic ColorScheme. If not, it’s best to fall again to utilizing a customized gentle or darkish ColorScheme.

Reply Dynamic theming from wallpaper(Left) and Default app theming (Proper)

The ColorScheme class offers builder features to create each dynamic and customized gentle and darkish coloration schemes:

Theme.kt

// Dynamic coloration is accessible on Android 12+
val dynamicColor = Construct.VERSION.SDK_INT >= Construct.VERSION_CODES.S
val colorScheme = when {
dynamicColor && darkTheme -> dynamicDarkColorScheme(LocalContext.present)
dynamicColor && !darkTheme -> dynamicLightColorScheme(LocalContext.present)
darkTheme -> darkColorScheme(…)
else -> lightColorScheme(…)
}

MaterialTheme(
colorScheme = colorScheme,
typography = typography,
shapes = shapes
) {
// M3 App content material
}

The Compose Materials 3 APIs comprise a variety of each new and developed Materials elements, with extra deliberate for future variations. Most of the Materials elements, like Card, RadioButton and CheckBox, are now not thought of experimental; their APIs are secure they usually can be utilized with out the ExperimentalMaterial3Api annotation.

The M3 Swap element has a model new UI refresh with accessibility-compliant minimal contact goal dimension assist, coloration mappings, and elective icon assist within the change thumb. The contact goal is greater, and the thumb dimension will increase on consumer interplay, offering suggestions to the consumer that the thumb is being interacted with.

Materials 3 Swap thumb interplay

Swap(
checked = isChecked,
onCheckedChange = { /*…*/ },
thumbContent = {
Icon(
imageVector = Icons.Default.Test,
contentDescription = stringResource(id = R.string.switch_check)
)
},
)

Navigation drawer elements now present wrapper sheets for content material to alter colours, shapes, and elevation independently.

Navigation drawer element	Content material
ModalNavigationDrawer	ModalDrawerSheet
PermanentNavigationDrawer	PermanentDrawerSheet
DismissableNavigationDrawer	DismissableDrawerSheet

ModalNavigationDrawer with content material wrapped in ModalDrawerSheet

ModalNavigationDrawer {
ModalDrawerSheet(
drawerShape = MaterialTheme.shapes.small,
drawerContainerColor = MaterialTheme.colorScheme.primaryContainer,
drawerContentColor = MaterialTheme.colorScheme.onPrimaryContainer,
drawerTonalElevation = 4.dp,
) {
DESTINATIONS.forEach { vacation spot ->
NavigationDrawerItem(
chosen = selectedDestination == vacation spot.route,
onClick = { … },
icon = { … },
label = { … }
)
}
}
}

We have now a model new CenterAlignedTopAppBar along with already present app bars. This can be utilized for the primary root web page in an app: you possibly can show the app title or web page headline with dwelling and motion icons.

Materials CenterAlignedTopAppBar with dwelling and motion gadgets.

CenterAlignedTopAppBar(
title = {
Textual content(stringResources(R.string.top_stories))
},
scrollBehavior = scrollBehavior,
navigationIcon = { /* Navigation Icon */},
actions = { /* App bar actions */}
)

See the most recent M3 elements and layouts on the Compose Materials 3 API reference overview. Keep watch over the releases web page for brand spanking new and up to date APIs.

Materials 3 simplified the naming and grouping of typography to:

Show
Headline
Title
Physique
Label

There are giant, medium, and small sizes for every, offering a complete of 15 textual content model variations.

The

Typography constructor provides defaults for every model, so you possibly can omit any parameters that you simply don’t wish to customise:

val typography = Typography(
titleLarge = TextStyle(
fontWeight = FontWeight.SemiBold,
fontSize = 22.sp,
lineHeight = 28.sp,
letterSpacing = 0.sp
),
titleMedium = TextStyle(
fontWeight = FontWeight.SemiBold,
fontSize = 16.sp,
lineHeight = 24.sp,
letterSpacing = 0.15.sp
),
…
}

You’ll be able to customise your typography by altering default values of TextStyle and font-related properties like fontFamily and letterSpacing.

bodyLarge = TextStyle(
fontWeight = FontWeight.Regular,
fontFamily = FontFamily.SansSerif,
fontStyle = FontStyle.Italic,
fontSize = 16.sp,
lineHeight = 24.sp,
letterSpacing = 0.15.sp,
baselineShift = BaselineShift.Subscript
)

The Materials 3 form scale defines the model of container corners, providing a variety of roundedness from sq. to totally round.

There are completely different sizes of shapes:

Further small
Small
Medium
Massive
Further giant

Materials Design 3 shapes utilized in varied elements as default worth.

Every form has a default worth however you possibly can override it:

val shapes = Shapes(
extraSmall = RoundedCornerShape(4.dp),
small = RoundedCornerShape(8.dp),
medium = RoundedCornerShape(12.dp),
giant = RoundedCornerShape(16.dp),
extraLarge = RoundedCornerShape(28.dp)
)

You’ll be able to learn extra about making use of form.

Jetpack Compose and Materials 3 present window dimension artifacts that may assist make your apps adaptive. You can begin by including the Compose Materials 3 window dimension class dependency to your construct.gradle information:

// Add dependency in module construct.gradle

implementation “androidx.compose.material3:material3-window-size-class:$material3_version”

Window dimension lessons group sizes into customary dimension buckets, that are breakpoints which can be designed to optimize your app for most unusual instances.

WindowWidthSize Class for grouping gadgets in several dimension buckets

See the Reply Compose pattern to be taught extra about adaptive apps and the window dimension lessons implementation.

M3 elements, like prime app bars, navigation drawers, bar, and rail, embody built-in assist for window insets. These elements, when used independently or with Scaffold, will robotically deal with insets decided by the standing bar, navigation bar, and different elements of the system UI.

Scaffold now helps the contentWindowInsets parameter which may help to specify insets for the scaffold content material.

Scaffold insets are solely considered when a topBar or bottomBar will not be current in Scaffold, as these elements deal with insets on the element degree.

Scaffold(
contentWindowInsets = WindowInsets(16.dp)
) {
// Scaffold content material
}

With Compose Materials 3 reaching secure, it’s a good time to start out studying all about it and prepare to undertake it in your apps. Try the sources beneath to get began.

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