Source: https://docs.expo.dev/versions/latest/sdk/live-photo

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Expo LivePhoto

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A library that allows displaying Live Photos on iOS.

GitHub Changelog npm

Ask AI

iOS

Bundled version:

~1.0.7

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Installation

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Terminal

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- npx expo install expo-live-photo

If you are installing this in an existing React Native app , make sure to install expo in your project.

Usage

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Here's a simple example of expo-live-photo usage combined with expo-image-picker.

LivePhoto

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Open in Snack

import * as ImagePicker from 'expo-image-picker'; import { LivePhotoAsset, LivePhotoView, LivePhotoViewType } from 'expo-live-photo'; import { useRef, useState } from 'react'; import { View, StyleSheet, Text, Button } from 'react-native'; export default function LivePhotoScreen() { const viewRef = useRef<LivePhotoViewType>(null); const [livePhoto, setLivePhoto] = useState<LivePhotoAsset | null>(null); const pickImage = async () => { const result = await ImagePicker.launchImageLibraryAsync({ mediaTypes: ['livePhotos'], }); if (!result.canceled && result.assets[0].pairedVideoAsset?.uri) { setLivePhoto({ photoUri: result.assets[0].uri, pairedVideoUri: result.assets[0].pairedVideoAsset.uri, }); } else { console.error('Failed to pick a live photo'); } }; if (!LivePhotoView.isAvailable()) { return ( <View style={styles.container}> <Text>expo-live-photo is not available on this platform 😕</Text> </View> ); } return ( <View style={styles.container}> <LivePhotoView ref={viewRef} source={livePhoto} style={[styles.livePhotoView, { display: livePhoto ? 'flex' : 'none' }]} onLoadComplete={() => { console.log('Live photo loaded successfully!'); }} onLoadError={error => { console.error('Failed to load the live photo: ', error.message); }} /> <View style={livePhoto ? styles.pickImageCollapsed : styles.pickImageExpanded}> <Button title={livePhoto ? 'Change Image' : 'Pick an image'} onPress={pickImage} /> </View> <Button title="Start Playback Hint" onPress={() => viewRef.current?.startPlayback('hint')} /> <Button title="Start Playback" onPress={() => viewRef.current?.startPlayback('full')} /> <Button title="Stop Playback" onPress={() => viewRef.current?.stopPlayback()} /> </View> ); } const styles = StyleSheet.create({ container: { flex: 1, alignItems: 'center', paddingVertical: 20, paddingHorizontal: 40, }, livePhotoView: { alignSelf: 'stretch', height: 300, }, pickImageExpanded: { alignSelf: 'stretch', height: 300, justifyContent: 'center', }, pickImageCollapsed: { marginVertical: 10, }, button: { marginVertical: 10, }, });

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API

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import { LivePhotoView } from 'expo-live-photo';

Component

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LivePhotoView

iOS

Type: React.Element<[LivePhotoViewProps](https://docs.expo.dev/versions/latest/sdk/live-photo#livephotoviewprops) & { ref: [Ref](https://docs.expo.dev/versions/latest/sdk/live-photo#ref) <[LivePhotoViewType](https://docs.expo.dev/versions/latest/sdk/live-photo#livephotoviewtype) > }>

LivePhotoViewProps

contentFit

iOS

Optional • Type: [ContentFit](https://docs.expo.dev/versions/latest/sdk/live-photo#contentfit)  • Default: 'contain'

Determines how the image should be scaled to fit the container.

• 'contain' - Scales the image so that its larger dimension fits the target size.
• 'cover' - Scales the image so that it completely fills the target size.

isMuted

iOS

Optional • Type: boolean • Default: true

Determines whether the live photo should also play audio.

onLoadComplete

iOS

Optional • Type: () => void

Called when the live photo is loaded and ready to play.

onLoadError

iOS

Optional • Type: (error: [LivePhotoLoadError](https://docs.expo.dev/versions/latest/sdk/live-photo#livephotoloaderror) ) => void

Called when an error occurred while loading.

onLoadStart

iOS

Optional • Type: () => void

Called when the live photo starts loading.

onPlaybackStart

iOS

Optional • Type: () => void

Called when the playback starts.

onPlaybackStop

iOS

Optional • Type: () => void

Called when the playback stops.

onPreviewPhotoLoad

iOS

Optional • Type: () => void

Called when the live photo preview photo is loaded.

source

iOS

Optional • Literal type: union

The live photo asset to display.

Acceptable values are: null | [LivePhotoAsset](https://docs.expo.dev/versions/latest/sdk/live-photo#livephotoasset)

useDefaultGestureRecognizer

iOS

Optional • Type: boolean • Default: true

Determines whether the default iOS gesture recognizer should be used. When true the playback will start if the user presses and holds on the LivePhotoView.

Inherited Props

• [ViewProps](https://reactnative.dev/docs/view#props)

Component Methods

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isAvailable()

iOS

Determines whether the current device is capable of displaying live photos.

Returns:

boolean

Types

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ContentFit

iOS

Literal Type: string

Determines how the image should be scaled to fit the container.

• 'contain' - Scales the image so that its larger dimension fits the target size.
• 'cover' - Scales the image so that it completely fills the target size.

Acceptable values are: 'contain' | 'cover'

LivePhotoAsset

iOS

A live photo asset.

Note: Due to native limitations, the photo and video parts of the live photo must come from a valid live photo file and be unaltered. When taken, the photo is paired with the video via metadata. If the pairing is broken, joining them into a live photo is impossible.

| Property | Type | Description | | --- | --- | --- | | pairedVideoUri | string | The URI of the video part of the live photo. | | photoUri | string | The URI of the photo part of the live photo. |

LivePhotoLoadError

iOS

| Property | Type | Description | | --- | --- | --- | | message | string | Reason for the load failure. |

LivePhotoViewType

iOS

| Property | Type | Description | | --- | --- | --- | | startPlayback | (playbackStyle: [PlaybackStyle](https://docs.expo.dev/versions/latest/sdk/live-photo#playbackstyle) ) => void | Start the playback of the video part of the live photo.<br><br>playbackStyle: [PlaybackStyle](https://docs.expo.dev/versions/latest/sdk/live-photo#playbackstyle) <br><br>Determines which playback style to use. If not provided, the full video will be played. | | stopPlayback | () => void | Stop the playback of the video part of the live photo. |

PlaybackStyle

iOS

Literal Type: string

Determines what style to use when playing the live photo.

• 'hint' - A short part of the video will be played to indicate that a live photo is being displayed.
• 'full' - The full video part will be played.

Acceptable values are: 'hint' | 'full'