TopAppBarDefaults

@Composable
fun centerAlignedTopAppBarColors(): TopAppBarColors

Creates a TopAppBarColors for CenterAlignedTopAppBars. The default implementation animates between the provided colors according to the Material Design specification.

@Composable
fun centerAlignedTopAppBarColors(
    containerColor: Color = Color.Unspecified,
    scrolledContainerColor: Color = Color.Unspecified,
    navigationIconContentColor: Color = Color.Unspecified,
    titleContentColor: Color = Color.Unspecified,
    actionIconContentColor: Color = Color.Unspecified
): TopAppBarColors

Creates a TopAppBarColors for CenterAlignedTopAppBars. The default implementation animates between the provided colors according to the Material Design specification.

@ExperimentalMaterial3Api
@Composable
fun enterAlwaysScrollBehavior(
    state: TopAppBarState = rememberTopAppBarState(),
    canScroll: () -> Boolean = { true },
    snapAnimationSpec: AnimationSpec<Float>? = MotionSchemeKeyTokens.DefaultEffects.value(),
    flingAnimationSpec: DecayAnimationSpec<Float>? = rememberSplineBasedDecay(),
    reverseLayout: Boolean = false
): TopAppBarScrollBehavior

Returns a TopAppBarScrollBehavior. A top app bar that is set up with this TopAppBarScrollBehavior will immediately collapse when the content is pulled up, and will immediately appear when the content is pulled down.

@ExperimentalMaterial3Api
@Composable
fun exitUntilCollapsedScrollBehavior(
    state: TopAppBarState = rememberTopAppBarState(),
    canScroll: () -> Boolean = { true },
    snapAnimationSpec: AnimationSpec<Float>? = MotionSchemeKeyTokens.DefaultEffects.value(),
    flingAnimationSpec: DecayAnimationSpec<Float>? = rememberSplineBasedDecay()
): TopAppBarScrollBehavior

Returns a TopAppBarScrollBehavior that adjusts its properties to affect the colors and height of the top app bar.

A top app bar that is set up with this TopAppBarScrollBehavior will immediately collapse when the nested content is pulled up, and will expand back the collapsed area when the content is pulled all the way down.

@Composable
fun largeTopAppBarColors(): TopAppBarColors

Creates a TopAppBarColors for LargeTopAppBars. The default implementation interpolates between the provided colors as the top app bar scrolls according to the Material Design specification.

@Composable
fun largeTopAppBarColors(
    containerColor: Color = Color.Unspecified,
    scrolledContainerColor: Color = Color.Unspecified,
    navigationIconContentColor: Color = Color.Unspecified,
    titleContentColor: Color = Color.Unspecified,
    actionIconContentColor: Color = Color.Unspecified
): TopAppBarColors

Creates a TopAppBarColors for LargeTopAppBars. The default implementation interpolates between the provided colors as the top app bar scrolls according to the Material Design specification.

@Composable
fun mediumTopAppBarColors(): TopAppBarColors

Creates a TopAppBarColors for MediumTopAppBars. The default implementation interpolates between the provided colors as the top app bar scrolls according to the Material Design specification.

@Composable
fun mediumTopAppBarColors(
    containerColor: Color = Color.Unspecified,
    scrolledContainerColor: Color = Color.Unspecified,
    navigationIconContentColor: Color = Color.Unspecified,
    titleContentColor: Color = Color.Unspecified,
    actionIconContentColor: Color = Color.Unspecified
): TopAppBarColors

Creates a TopAppBarColors for MediumTopAppBars. The default implementation interpolates between the provided colors as the top app bar scrolls according to the Material Design specification.

@ExperimentalMaterial3Api
@Composable
fun pinnedScrollBehavior(
    state: TopAppBarState = rememberTopAppBarState(),
    canScroll: () -> Boolean = { true }
): TopAppBarScrollBehavior

Returns a pinned TopAppBarScrollBehavior that tracks nested-scroll callbacks and updates its TopAppBarState.contentOffset accordingly.

@Composable
fun topAppBarColors(): TopAppBarColors

Creates a TopAppBarColors for small TopAppBar. The default implementation animates between the provided colors according to the Material Design specification.

@Composable
fun topAppBarColors(
    containerColor: Color = Color.Unspecified,
    scrolledContainerColor: Color = Color.Unspecified,
    navigationIconContentColor: Color = Color.Unspecified,
    titleContentColor: Color = Color.Unspecified,
    actionIconContentColor: Color = Color.Unspecified
): TopAppBarColors

Creates a TopAppBarColors for small TopAppBar. The default implementation animates between the provided colors according to the Material Design specification.

val LargeAppBarCollapsedHeight: Dp

The default height of a LargeTopAppBar when collapsed by a TopAppBarScrollBehavior.

val LargeAppBarExpandedHeight: Dp

The default expanded height of a LargeTopAppBar.

val LargeAppBarWithSubtitleExpandedHeight: Dp

The default expanded height of a LargeTopAppBar with subtitle.

val LargeAppBarWithoutSubtitleExpandedHeight: Dp

The default expanded height of a LargeTopAppBar without subtitle.

val MediumAppBarCollapsedHeight: Dp

The default height of a MediumTopAppBar when collapsed by a TopAppBarScrollBehavior.

val MediumAppBarExpandedHeight: Dp

The default expanded height of a MediumTopAppBar.

val MediumAppBarWithSubtitleExpandedHeight: Dp

The default expanded height of a MediumTopAppBar with subtitle.

val MediumAppBarWithoutSubtitleExpandedHeight: Dp

The default expanded height of a MediumTopAppBar without subtitle.

val TopAppBarExpandedHeight: Dp

The default expanded height of a TopAppBar and the CenterAlignedTopAppBar.

val windowInsets: WindowInsets

Default insets to be used and consumed by the top app bars