Expo Docs MCP Server

--- title: DocumentPicker description: A library that provides access to the system's UI for selecting documents from the available providers on the user's device. sourceCodeUrl: https://github.com/expo/expo/tree/main/packages/expo-document-picker packageName: expo-document-picker iconUrl: /static/images/packages/expo-document-picker.png platforms: ["android", "ios", "web"] --- import { ConfigReactNative, ConfigPluginExample, ConfigPluginProperties, } from '~/ui/components/ConfigSection'; `expo-document-picker` provides access to the system's UI for selecting documents from the available providers on the user's device. ## Installation ## Configuration in app config You can configure `expo-document-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. If your app does **not** use EAS Build, then you'll need to manually configure the package. If you want to enable [iCloud storage features][icloud-entitlement], set the `expo.ios.usesIcloudStorage` key to `true` in the [app config](/workflow/configuration/) file as specified [configuration properties](../config/app/#usesicloudstorage). Running [EAS Build](/build/introduction) locally will use [iOS capabilities signing](/build-reference/ios-capabilities) to enable the required capabilities before building. ```json app.json { "expo": { "plugins": [ [ "expo-document-picker", { "iCloudContainerEnvironment": "Production" } ] ] } } ``` Apps that don't use [EAS Build](/build/introduction) and want [iCloud storage features][icloud-entitlement] must [manually configure](/build-reference/ios-capabilities#manual-setup) the [**iCloud service with CloudKit support**](https://developer.apple.com/documentation/bundleresources/entitlements/com_apple_developer_icloud-container-environment) for their bundle identifier. If you enable the **iCloud** capability through the [Apple Developer Console](/build-reference/ios-capabilities#apple-developer-console), then be sure to add the following entitlements in your `ios/[app]/[app].entitlements` file (where `dev.expo.my-app` if your bundle identifier): ```xml <key>com.apple.developer.icloud-container-identifiers</key> <array> <string>iCloud.dev.expo.my-app</string> </array> <key>com.apple.developer.icloud-services</key> <array> <string>CloudDocuments</string> </array> <key>com.apple.developer.ubiquity-container-identifiers</key> <array> <string>iCloud.dev.expo.my-app</string> </array> <key>com.apple.developer.ubiquity-kvstore-identifier</key> <string>$(TeamIdentifierPrefix)dev.expo.my-app</string> ``` Apple Developer Console also requires an **iCloud Container** to be created. When registering the new container, you are asked to provide a description and identifier for the container. You may enter any name under the description. Under the identifier, add `iCloud.<your_bundle_identifier>` (same value used for `com.apple.developer.icloud-container-identifiers` and `com.apple.developer.ubiquity-container-identifiers` entitlements). ## Using with `expo-file-system` When using `expo-document-picker` with [`expo-file-system`](./filesystem.md), it's not always possible for the file system to read the file immediately after the `expo-document-picker` picks it. To allow the `expo-file-system` to read the file immediately after it is picked, you'll need to ensure that the [`copyToCacheDirectory`](#documentpickeroptions) option is set to `true`. ## API ```js ``` [icloud-entitlement]: https://developer.apple.com/documentation/bundleresources/entitlements/com_apple_developer_icloud-services