Expo Docs MCP Server

--- title: ImagePicker description: A library that provides access to the system's UI for selecting images and videos from the phone's library or taking a photo with the camera. sourceCodeUrl: https://github.com/expo/expo/tree/sdk-51/packages/expo-image-picker packageName: expo-image-picker iconUrl: /static/images/packages/expo-image-picker.png platforms: ["android", "ios", "web"] --- import { ConfigReactNative, ConfigPluginExample, ConfigPluginProperties, } from '~/ui/components/ConfigSection'; `expo-image-picker` provides access to the system's UI for selecting images and videos from the phone's library or taking a photo with the camera. ## Installation #### Known issues&ensp; On iOS, when an image (usually of a [higher resolution](http://www.openradar.me/49866214)) is picked from the camera roll, the result of the cropped image gives the wrong value for the cropped rectangle in some cases. Unfortunately, this issue is with the underlying `UIImagePickerController` due to a bug in the closed-source tools built into iOS. ## Configuration in app config You can configure `expo-image-picker` using its built-in [config plugin](/config-plugins/introduction/) if you use config plugins in your project ([EAS Build](/build/introduction) or `npx expo run:[android|ios]`). The plugin allows you to configure various properties that cannot be set at runtime and require building a new app binary to take effect. ```json app.json { "expo": { "plugins": [ [ "expo-image-picker", { "photosPermission": "The app accesses your photos to let you share them with your friends." } ] ] } } ``` If you're not using Continuous Native Generation ([CNG](/workflow/continuous-native-generation/)) or you're using a native **ios** project manually, then you need to add `NSPhotoLibraryUsageDescription`, `NSCameraUsageDescription`, and `NSMicrophoneUsageDescription` keys to your **ios/[app]/Info.plist**: ```xml Info.plist <key>NSPhotoLibraryUsageDescription</key> <string>Give $(PRODUCT_NAME) permission to save photos</string> <key>NSCameraUsageDescription</key> <string>Give $(PRODUCT_NAME) permission to access your camera</string> <key>NSMicrophoneUsageDescription</key> <string>Give $(PRODUCT_NAME) permission to use your microphone</string> ``` ## Usage ```tsx const [image, setImage] = useState<string | null>(null); const pickImage = async () => { // No permissions request is necessary for launching the image library let result = await ImagePicker.launchImageLibraryAsync({ mediaTypes: ImagePicker.MediaTypeOptions.All, allowsEditing: true, aspect: [4, 3], quality: 1, }); console.log(result); if (!result.canceled) { setImage(result.assets[0].uri); } }; return ( <View style={styles.container}> {image && } </View> ); } const styles = StyleSheet.create({ container: { flex: 1, alignItems: 'center', justifyContent: 'center', }, image: { width: 200, height: 200, }, }); ``` When you run this example and pick an image, you will see the image that you picked show up in your app, and a similar log will be shown in the console: ```json collapseHeight=425 { "assets": [ { "assetId": "C166F9F5-B5FE-4501-9531", "base64": null, "duration": null, "exif": null, "fileName": "IMG.HEIC", "fileSize": 6018901, "height": 3025, "type": "image", "uri": "file:///data/user/0/host.exp.exponent/cache/cropped1814158652.jpg" "width": 3024 } ], "canceled": false } ``` ### With AWS S3 See [Amplify documentation](https://docs.amplify.aws/) guide to set up your project correctly. ### With Firebase See [Using Firebase](/guides/using-firebase/) guide to set up your project correctly. ## API ```js ``` ## Permissions ### Android The following permissions are added automatically through the library's **AndroidManifest.xml**. ### iOS The following usage description keys are used by the APIs in this library.