---
modificationDate: September 29, 2026
title: LazyRow
description: A Jetpack Compose LazyRow component for displaying horizontally scrolling lists.
sourceCodeUrl: 'https://github.com/expo/expo/tree/sdk-58/packages/expo-ui'
packageName: '@expo/ui'
platforms: ['android', 'expo-go']
---

This documentation is available as Markdown for AI agents and LLMs. See the [full Markdown index](https://docs.expo.dev/llms.txt) or append .md to any documentation URL.

# LazyRow

A Jetpack Compose LazyRow component for displaying horizontally scrolling lists.

<AgentInstructions>

## Submitting Feedback

If you encounter errors, misleading or outdated information, report it so Expo can be improved:

Preferred command:
npx --yes submit-expo-feedback@latest --category docs --subject "/versions/v58.0.0/sdk/ui/jetpack-compose/lazyrow/" "<actionable feedback>"

Direct HTTP fallback:
curl -X POST https://api.expo.dev/v2/feedback/docs-send -H 'Content-Type: application/json' -d '{"url":"/versions/v58.0.0/sdk/ui/jetpack-compose/lazyrow/","feedback":"🤖 Agent feedback for docs: <specific, actionable description> (<model>, <harness>)"}'

Only submit when you have something specific and actionable to report. Try to give the most context.

## Navigation

When answering a related or follow-up question, use llms.txt to find the relevant page as Markdown (.md) instead of guessing.

You are here: Reference (v58.0.0) > Expo UI > Jetpack Compose (52 pages in this section)
Full documentation tree: [llms.txt](https://docs.expo.dev/llms.txt)

</AgentInstructions>
Android, Included in Expo Go

Expo UI LazyRow matches the official Jetpack Compose [LazyRow API](https://developer.android.com/develop/ui/compose/lists) and displays a horizontally scrolling list.

Image: LazyRow rendering colored category cards in a horizontally scrolling list

## Installation

```sh
# npm
npx expo install @expo/ui

# yarn
yarn expo install @expo/ui

# pnpm
pnpm expo install @expo/ui

# bun
bun expo install @expo/ui
```

If you are installing this in an [existing React Native app](https://docs.expo.dev/bare/overview.md), make sure to [install `expo`](https://docs.expo.dev/bare/installing-expo-modules.md) in your project.

## Usage

### Basic lazy row

Each child of [`LazyRow`](https://docs.expo.dev/versions/v58.0.0/sdk/ui/jetpack-compose/lazyrow.md#lazyrow) is one item. Use the `horizontalArrangement` prop to space the items and the `contentPadding` prop to add padding around the list content.

```tsx BasicLazyRow.tsx
import {
  Host,
  LazyRow,
  Text,
  useMaterialColors,
} from '@expo/ui/jetpack-compose';
import {
  border,
  padding,
} from '@expo/ui/jetpack-compose/modifiers';

export default function BasicLazyRow() {
  const colors = useMaterialColors();

  return (
    <Host style={{ height: 100 }}>
      <LazyRow
        horizontalArrangement={{ spacedBy: 8 }}
        verticalAlignment="center">
        <Text
          style={{ fontSize: 28 }}
          color={colors.onBackground}
          modifiers={[
            border(1, colors.outline),
            padding(12, 6, 12, 6),
          ]}>
          Photos
        </Text>
        <Text
          style={{ fontSize: 28 }}
          color={colors.onBackground}
          modifiers={[
            border(1, colors.outline),
            padding(12, 6, 12, 6),
          ]}>
          Music
        </Text>
        <Text
          style={{ fontSize: 28 }}
          color={colors.onBackground}
          modifiers={[
            border(1, colors.outline),
            padding(12, 6, 12, 6),
          ]}>
          Videos
        </Text>
      </LazyRow>
    </Host>
  );
}
```

### Large lists

Use [`LazyRow.Items`](https://docs.expo.dev/versions/v58.0.0/sdk/ui/jetpack-compose/lazyrow.md#lazyitems) to render items from an array. Pass the items as `data`, a unique key for each item with `keyExtractor`, and a `children` function that returns the view for an item. `LazyRow.Items` renders only the items near the visible area and reuses them while you scroll.

```tsx LargeLazyRow.tsx
import {
  Host,
  LazyRow,
  Text,
  useMaterialColors,
} from '@expo/ui/jetpack-compose';
import {
  border,
  padding,
} from '@expo/ui/jetpack-compose/modifiers';

const items = Array.from(
  { length: 10000 },
  (_, i) => `Item ${i + 1}`
);

function Chip({ label }: { label: string }) {
  const colors = useMaterialColors();

  return (
    <Text
      style={{ fontSize: 28 }}
      color={colors.onBackground}
      modifiers={[
        border(1, colors.outline),
        padding(12, 6, 12, 6),
      ]}>
      {label}
    </Text>
  );
}

function renderItem({ item }: { item: string }) {
  return <Chip label={item} />;
}

export default function LargeLazyRow() {
  return (
    <Host style={{ height: 100 }}>
      <LazyRow
        horizontalArrangement={{ spacedBy: 8 }}
        verticalAlignment="center">
        <LazyRow.Items
          data={items}
          keyExtractor={item => item}
          estimatedItemSize={120}>
          {renderItem}
        </LazyRow.Items>
      </LazyRow>
    </Host>
  );
}
```

Follow these rules when you render items:

-   Give the `LazyRow` a fixed height. Items that are not ready yet show an empty placeholder that fills the height of the row.
-   Define the `children` function outside the component, or wrap it in `useCallback`. Otherwise, the items near the visible area render again each time the component renders.
-   A reused view keeps the local state (`useState`) of the item it showed before. Reset the state when the item changes, or keep the state outside the view.
-   Set `estimatedItemSize` close to the width of your items, in density-independent pixels (dp).
-   Use `overscanCount` to prepare more items before and after the visible items.
-   To update the items, pass a new `data` array. Do not change the array in place.
-   Set `recycling={false}` to render every item up front.

## API

```tsx
import { LazyRow } from '@expo/ui/jetpack-compose';
```

## Components

### `LazyItems`

Supported platforms: Android.

Type: React.[Element](https://www.typescriptlang.org/docs/handbook/jsx.html#function-component)<[LazyItemsProps](https://docs.expo.dev/versions/v58.0.0/sdk/ui/jetpack-compose/lazyrow.md#lazyitemsprops)<T\>\>

A block of recycled rows inside `LazyColumn` or `LazyRow`, mirroring the Compose `items(count, key)` builder. Only a small pool of rows around the visible range is mounted, so large data sets stay cheap. Rows that are not ready yet show a placeholder of `estimatedItemSize`, or of the size last measured for that item.

Mount it as a direct child of `LazyColumn` or `LazyRow`.

LazyItemsProps

### `children`

Supported platforms: Android.

Type: `(info: { index: number, item: T }) => ReactElement`

Renders an item. Wrap it in `useCallback`, or every item re-renders on each parent render. Recycled views are reused for other items, so their local state (`useState`) carries over. Reset it when the item changes, or keep the state outside the view.

### `data`

Supported platforms: Android.

Type: `readonly T[]`

Items to display. Replace the array when updating data.

### `estimatedItemSize`

Supported platforms: Android.

Optional • Type: `number` • Default: `64`

Placeholder size in dp along the scroll axis, until an item is measured. Must be positive. Ignored when `recycling` is `false`.

### `keyExtractor`

Supported platforms: Android.

Type: `(item: T, index: number) => string`

Returns a stable, unique string key, also used as the lazy list item key.

### `overscanCount`

Supported platforms: Android.

Optional • Type: `number` • Default: `10`

Extra items to prepare on each side of the visible items. Must be a non-negative integer. Ignored when `recycling` is `false`.

### `recycling`

Supported platforms: Android.

Optional • Type: `boolean` • Default: `true`

Renders only the items near the visible range and reuses them while scrolling. Set to `false` to render every item at once. Set it once; changing it remounts the items.

### `LazyRow`

Supported platforms: Android.

Type: React.[Element](https://www.typescriptlang.org/docs/handbook/jsx.html#function-component)<[LazyRowProps](https://docs.expo.dev/versions/v58.0.0/sdk/ui/jetpack-compose/lazyrow.md#lazyrowprops)\>

A lazy row component that efficiently displays a horizontally scrolling list.

LazyRowProps

### `children`

Supported platforms: Android.

Optional • Type: [ReactNode](https://reactnative.dev/docs/react-node)

The content to display inside the lazy row.

### `contentPadding`

Supported platforms: Android.

Optional • Type: [ContentPadding](https://docs.expo.dev/versions/v58.0.0/sdk/ui/jetpack-compose/lazyrow.md#contentpadding)

Content padding in dp.

### `horizontalArrangement`

Supported platforms: Android.

Optional • Literal type: `union`

The horizontal arrangement of items. Can be a preset string or an object with `spacedBy` to specify spacing in dp.

Acceptable values are: `'center'` | `'start'` | `'end'` | `'spaceBetween'` | `'spaceAround'` | `'spaceEvenly'` | `{ spacedBy: number }`

### `modifiers`

Supported platforms: Android.

Optional • Type: `ModifierConfig[]`

Modifiers for the component.

### `verticalAlignment`

Supported platforms: Android.

Optional • Literal type: `string`

The vertical alignment of items.

Acceptable values are: `'center'` | `'top'` | `'bottom'`