<div class='type'>Composable Component</div>


Top app bars display information and actions at the top of a screen.

<img loading='lazy' class='hero-img' alt='Small top app bar image' src='/static/images/material3/small-top-app-bar.png'>

<a id='references'></a>

<div class='sourceset sourceset-common'>Common</div>


> **Deprecated** Deprecated in favor of TopAppBar with contentPadding parameter


<h2 id="topappbar-title-modifier-navigationicon-actions-expandedheight-windowinsets-colors-scrollbehavior">TopAppBar</h2>

```kotlin
@Composable
fun TopAppBar(
    title: @Composable () -> Unit,
    modifier: Modifier = Modifier,
    navigationIcon: @Composable () -> Unit = {},
    actions: @Composable RowScope.() -> Unit = {},
    expandedHeight: Dp = TopAppBarDefaults.TopAppBarExpandedHeight,
    windowInsets: WindowInsets = TopAppBarDefaults.windowInsets,
    colors: TopAppBarColors = TopAppBarDefaults.topAppBarColors(),
    scrollBehavior: TopAppBarScrollBehavior? = null,
) =
    TopAppBar(
        title = title,
        modifier = modifier,
        navigationIcon = navigationIcon,
        actions = actions,
        expandedHeight = expandedHeight,
        windowInsets = windowInsets,
        colors = colors,
        scrollBehavior = scrollBehavior,
        contentPadding = TopAppBarDefaults.ContentPadding,
    )
```


#### Parameters

| | |
| --- | --- |
| title | the title to be displayed in the top app bar |
| modifier | the `Modifier` to be applied to this top app bar |
| navigationIcon | the navigation icon displayed at the start of the top app bar. This should typically be an `IconButton` or `IconToggleButton`. |
| actions | the actions displayed at the end of the top app bar. This should typically be `IconButton`s. The default layout here is a `Row`, so icons inside will be placed horizontally. |
| expandedHeight | this app bar's height. When a specified `scrollBehavior` causes the app bar to collapse or expand, this value will represent the maximum height that the bar will be allowed to expand. This value must be specified and finite, otherwise it will be ignored and replaced with `TopAppBarDefaults.TopAppBarExpandedHeight`. |
| windowInsets | a window insets that app bar will respect. |
| colors | `TopAppBarColors` that will be used to resolve the colors used for this top app bar in different states. See `TopAppBarDefaults.topAppBarColors`. |
| scrollBehavior | a `TopAppBarScrollBehavior` which holds various offset values that will be applied by this top app bar to set up its height and colors. A scroll behavior is designed to work in conjunction with a scrolled content to change the top app bar appearance as the content scrolls. See `TopAppBarScrollBehavior.nestedScrollConnection`. |


<hr class="docs-overload-divider">


<h2 id="topappbar-title-modifier-navigationicon-actions-expandedheight-windowinsets-colors-scrollbehavior-contentpadding">TopAppBar</h2>

<div class='sourceset sourceset-common'>Common</div>


```kotlin
@Composable
fun TopAppBar(
    title: @Composable () -> Unit,
    modifier: Modifier = Modifier,
    navigationIcon: @Composable () -> Unit = {},
    actions: @Composable RowScope.() -> Unit = {},
    expandedHeight: Dp = TopAppBarDefaults.TopAppBarExpandedHeight,
    windowInsets: WindowInsets = TopAppBarDefaults.windowInsets,
    colors: TopAppBarColors = TopAppBarDefaults.topAppBarColors(),
    scrollBehavior: TopAppBarScrollBehavior? = null,
    contentPadding: PaddingValues = TopAppBarDefaults.ContentPadding,
) =
    SingleRowTopAppBar(
        modifier = modifier,
        title = title,
        titleTextStyle = AppBarSmallTokens.TitleFont.value,
        subtitle = null,
        subtitleTextStyle = TextStyle.Default,
        titleHorizontalAlignment = Alignment.Start,
        navigationIcon = navigationIcon,
        actions = actions,
        expandedHeight =
            if (expandedHeight == Dp.Unspecified || expandedHeight == Dp.Infinity) {
                TopAppBarDefaults.TopAppBarExpandedHeight
            } else {
                expandedHeight
            },
        contentPadding = contentPadding,
        windowInsets = windowInsets,
        colors = colors,
        scrollBehavior = scrollBehavior,
    )
```


#### Parameters

| | |
| --- | --- |
| title | the title to be displayed in the top app bar |
| modifier | the `Modifier` to be applied to this top app bar |
| navigationIcon | the navigation icon displayed at the start of the top app bar. This should typically be an `IconButton` or `IconToggleButton`. |
| actions | the actions displayed at the end of the top app bar. This should typically be `IconButton`s. The default layout here is a `Row`, so icons inside will be placed horizontally. |
| expandedHeight | this app bar's height. When a specified `scrollBehavior` causes the app bar to collapse or expand, this value will represent the maximum height that the bar will be allowed to expand. This value must be specified and finite, otherwise it will be ignored and replaced with `TopAppBarDefaults.TopAppBarExpandedHeight`. |
| windowInsets | a window insets that app bar will respect. |
| colors | `TopAppBarColors` that will be used to resolve the colors used for this top app bar in different states. See `TopAppBarDefaults.topAppBarColors`. |
| scrollBehavior | a `TopAppBarScrollBehavior` which holds various offset values that will be applied by this top app bar to set up its height and colors. A scroll behavior is designed to work in conjunction with a scrolled content to change the top app bar appearance as the content scrolls. See `TopAppBarScrollBehavior.nestedScrollConnection`. |
| contentPadding | the padding applied to the content of this TopAppBar. |


<hr class="docs-overload-divider">


<h2 id="topappbar-title-subtitle-modifier-navigationicon-actions-titlehorizontalalignment-expandedheight-windowinsets-colors-scrollbehavior-contentpadding">TopAppBar</h2>

<div class='sourceset sourceset-common'>Common</div>


```kotlin
@ExperimentalMaterial3ExpressiveApi
@Composable
fun TopAppBar(
    title: @Composable () -> Unit,
    subtitle: @Composable () -> Unit,
    modifier: Modifier = Modifier,
    navigationIcon: @Composable () -> Unit = {},
    actions: @Composable RowScope.() -> Unit = {},
    titleHorizontalAlignment: Alignment.Horizontal = Alignment.Start,
    expandedHeight: Dp = TopAppBarDefaults.TopAppBarExpandedHeight,
    windowInsets: WindowInsets = TopAppBarDefaults.windowInsets,
    colors: TopAppBarColors = TopAppBarDefaults.topAppBarColors(),
    scrollBehavior: TopAppBarScrollBehavior? = null,
    contentPadding: PaddingValues = TopAppBarDefaults.ContentPadding,
) =
    SingleRowTopAppBar(
        modifier = modifier,
        title = title,
        titleTextStyle = AppBarSmallTokens.TitleFont.value,
        subtitle = subtitle,
        subtitleTextStyle = AppBarSmallTokens.SubtitleFont.value,
        titleHorizontalAlignment = titleHorizontalAlignment,
        navigationIcon = navigationIcon,
        actions = actions,
        expandedHeight =
            if (expandedHeight == Dp.Unspecified || expandedHeight == Dp.Infinity) {
                TopAppBarDefaults.TopAppBarExpandedHeight
            } else {
                expandedHeight
            },
        contentPadding = contentPadding,
        windowInsets = windowInsets,
        colors = colors,
        scrollBehavior = scrollBehavior,
    )
```


#### Parameters

| | |
| --- | --- |
| title | the title to be displayed in the top app bar |
| subtitle | the subtitle to be displayed in the top app bar |
| modifier | the `Modifier` to be applied to this top app bar |
| navigationIcon | the navigation icon displayed at the start of the top app bar. This should typically be an `IconButton` or `IconToggleButton`. |
| actions | the actions displayed at the end of the top app bar. This should typically be `IconButton`s. The default layout here is a `Row`, so icons inside will be placed horizontally. |
| titleHorizontalAlignment | the horizontal alignment of the title and subtitle |
| expandedHeight | this app bar's height. When a specified `scrollBehavior` causes the app bar to collapse or expand, this value will represent the maximum height that the bar will be allowed to expand. This value must be specified and finite, otherwise it will be ignored and replaced with `TopAppBarDefaults.TopAppBarExpandedHeight`. |
| windowInsets | a window insets that app bar will respect. |
| colors | `TopAppBarColors` that will be used to resolve the colors used for this top app bar in different states. See `TopAppBarDefaults.topAppBarColors`. |
| scrollBehavior | a `TopAppBarScrollBehavior` which holds various offset values that will be applied by this top app bar to set up its height and colors. A scroll behavior is designed to work in conjunction with a scrolled content to change the top app bar appearance as the content scrolls. See `TopAppBarScrollBehavior.nestedScrollConnection`. |
| contentPadding | the padding applied to the content of this TopAppBar. |