---
title: "Row"
description: "A layout composable that places its children in a horizontal sequence. For a layout composable
that places its children in a vertical sequence, see [Column]. Note that by default items do not
scroll; see `Modifier.horizontalScroll` to add this behavior. For a horizontally scrollable list
that only composes and lays out the currently visible items see `LazyRow`.
The [Row] layout is able to assign children widths according to their weights provided using the
[RowScope.weight] modifier. If a child is not provided a weight, it will be asked for its
preferred width before the sizes of the children with weights are calculated proportionally to
their weight based on the remaining available space. Note that if the [Row] is horizontally
scrollable or part of a horizontally scrollable container, any provided weights will be
disregarded as the remaining available space will be infinite.
When none of its children have weights, a [Row] will be as small as possible to fit its children
one next to the other. In order to change the width of the [Row], use the [Modifier.width]
modifiers; e.g. to make it fill the available width [Modifier.fillMaxWidth] can be used. If at
least one child of a [Row] has a [weight][RowScope.weight], the [Row] will fill the available
width, so there is no need for [Modifier.fillMaxWidth]. However, if [Row]'s size should be
limited, the [Modifier.width] or [Modifier.size] layout modifiers should be applied.
When the size of the [Row] is larger than the sum of its children sizes, a
[horizontalArrangement] can be specified to define the positioning of the children inside the
[Row]. See [Arrangement] for available positioning behaviors; a custom arrangement can also be
defined using the constructor of [Arrangement]. Below is an illustration of different horizontal
arrangements:
Note that if two or more Text components are placed in a [Row], normally they should be aligned
by their first baselines. [Row] as a general purpose container does not do it automatically so
developers need to handle this manually. This is achieved by adding a [RowScope.alignByBaseline]
modifier to every such Text component. By default this modifier aligns by [FirstBaseline]. If,
however, you need to align Texts by [LastBaseline] for example, use a more general
[RowScope.alignBy] modifier.
See example of using Texts inside the Row:"
type: "composable"
---
Composable Function
Common
```kotlin
@Composable
inline fun Row(
modifier: Modifier = Modifier,
horizontalArrangement: Arrangement.Horizontal = Arrangement.Start,
verticalAlignment: Alignment.Vertical = Alignment.Top,
content: @Composable RowScope.() -> Unit,
)
```
A layout composable that places its children in a horizontal sequence. For a layout composable
that places its children in a vertical sequence, see `Column`. Note that by default items do not
scroll; see `Modifier.horizontalScroll` to add this behavior. For a horizontally scrollable list
that only composes and lays out the currently visible items see `LazyRow`.
The `Row` layout is able to assign children widths according to their weights provided using the
`RowScope.weight` modifier. If a child is not provided a weight, it will be asked for its
preferred width before the sizes of the children with weights are calculated proportionally to
their weight based on the remaining available space. Note that if the `Row` is horizontally
scrollable or part of a horizontally scrollable container, any provided weights will be
disregarded as the remaining available space will be infinite.
When none of its children have weights, a `Row` will be as small as possible to fit its children
one next to the other. In order to change the width of the `Row`, use the `Modifier.width`
modifiers; e.g. to make it fill the available width `Modifier.fillMaxWidth` can be used. If at
least one child of a `Row` has a `weight`, the `Row` will fill the available
width, so there is no need for `Modifier.fillMaxWidth`. However, if `Row`'s size should be
limited, the `Modifier.width` or `Modifier.size` layout modifiers should be applied.
When the size of the `Row` is larger than the sum of its children sizes, a
`horizontalArrangement` can be specified to define the positioning of the children inside the
`Row`. See `Arrangement` for available positioning behaviors; a custom arrangement can also be
defined using the constructor of `Arrangement`. Below is an illustration of different horizontal
arrangements:
!`Row
arrangements`(https://developer.android.com/images/reference/androidx/compose/foundation/layout/row_arrangement_visualization.gif)
Note that if two or more Text components are placed in a `Row`, normally they should be aligned
by their first baselines. `Row` as a general purpose container does not do it automatically so
developers need to handle this manually. This is achieved by adding a `RowScope.alignByBaseline`
modifier to every such Text component. By default this modifier aligns by `FirstBaseline`. If,
however, you need to align Texts by `LastBaseline` for example, use a more general
`RowScope.alignBy` modifier.
See example of using Texts inside the Row:
#### Parameters
| | |
| --- | --- |
| modifier | The modifier to be applied to the Row. |
| horizontalArrangement | The horizontal arrangement of the layout's children. |
| verticalAlignment | The vertical alignment of the layout's children. |
| content | The content of the Row |
## Code Examples
### SimpleAlignByInRow
```kotlin
@Composable
fun SimpleAlignByInRow() {
Row(Modifier.fillMaxHeight()) {
// The center of the magenta Box and the baselines of the two texts will be
// vertically aligned. Note that alignBy() or alignByBaseline() has to be specified
// for all children we want to take part in the alignment. For example, alignByBaseline()
// means that the baseline of the text should be aligned with the alignment line
// (possibly another baseline) specified for siblings using alignBy or alignByBaseline.
// If no other sibling had alignBy() or alignByBaseline(), the modifier would have no
// effect.
Box(
modifier =
Modifier.size(80.dp, 40.dp)
.alignBy { it.measuredHeight / 2 }
.background(Color.Magenta)
)
Text(
text = "Text 1",
fontSize = 40.sp,
modifier = Modifier.alignByBaseline().background(color = Color.Red),
)
Text(text = "Text 2", modifier = Modifier.alignByBaseline().background(color = Color.Cyan))
}
}
```
### SimpleRow
```kotlin
@Composable
fun SimpleRow() {
Row {
// The child with no weight will have the specified size.
Box(Modifier.size(40.dp, 80.dp).background(Color.Magenta))
// Has weight, the child will occupy half of the remaining width.
Box(Modifier.height(40.dp).weight(1f).background(Color.Yellow))
// Has weight and does not fill, the child will occupy at most half of the remaining width.
// Therefore it will occupy 80.dp (its preferred width) if the assigned width is larger.
Box(Modifier.size(80.dp, 40.dp).weight(1f, fill = false).background(Color.Green))
}
}
```