---
modificationDate: May 06, 2026
title: Host
description: A cross-platform Host component that wraps universal @expo/ui content.
sourceCodeUrl: 'https://github.com/expo/expo/tree/sdk-56/packages/expo-ui'
packageName: '@expo/ui'
platforms: ['android', 'ios', 'web', 'expo-go']
---

<AgentInstructions>

## Submitting Feedback

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</AgentInstructions>

# Host

A cross-platform Host component that wraps universal @expo/ui content.
Android, iOS, Web, Included in Expo Go

> For the complete documentation index, see [llms.txt](/llms.txt). Use this file to discover all available pages.

A container for universal `@expo/ui` content. On Android and iOS it re-exports the platform-native [`Host` for Jetpack Compose](/versions/v56.0.0/sdk/ui/jetpack-compose/host)/[`Host` for SwiftUI](/versions/v56.0.0/sdk/ui/swift-ui/host), so Jetpack Compose/SwiftUI children render exactly as they would in the platform-specific packages. On web, it falls back to a React Native [`View`](https://reactnative.dev/docs/view). Use `Host` as the root of any universal subtree so the same component tree works across all three platforms.

## Installation

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

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

## Usage

### Basic usage

```tsx
import { Host, Column, Text, Button } from '@expo/ui';

export default function HostExample() {
  return (
    <Host style={{ flex: 1 }}>
      <Column spacing={12} alignment="center">
        <Text>Hello, world!</Text>
        <Button label="Press me" onPress={() => alert('Pressed')} />
      </Column>
    </Host>
  );
}
```

### Match contents sizing

Use `matchContents` to let `Host` size itself to fit its content. On Android and iOS, this is forwarded to the platform-native `Host` (see [Jetpack Compose](/versions/v56.0.0/sdk/ui/jetpack-compose/host)/[SwiftUI](/versions/v56.0.0/sdk/ui/swift-ui/host) for the exact platform semantics). On web, the same prop is accepted for API parity but sizing is ultimately determined by the `style` you pass, since the web `Host` renders a plain React Native `View`.

```tsx
import { Host, Button } from '@expo/ui';

export default function MatchContentsExample() {
  return (
    <Host matchContents>
      <Button label="Sized to content" onPress={() => {}} />
    </Host>
  );
}
```

## API

```tsx
import { Host } from '@expo/ui';
```

## Component

### `Host`

Supported platforms: Android, iOS, Web.

Type: React.[Element](https://www.typescriptlang.org/docs/handbook/jsx.html#function-component)<[ViewProps](https://reactnative.dev/docs/view#props) & { matchContents: boolean | { horizontal: boolean, vertical: boolean } }\>

A bridging container that hosts SwiftUI views on iOS and Jetpack Compose views on Android.