This is documentation for the next SDK version. For up-to-date documentation, see the latest version (SDK 52).
A universal library that provides information native application's ID, app name and build version at runtime.
expo-application provides useful information about the native application, itself, such as the ID, app name, and build version.
- npx expo install expo-applicationIf you are installing this in an existing React Native app, start by installing expo in your project. Then, follow the additional instructions as mentioned by the library's README under "Installation in bare React Native projects" section.
import * as Application from 'expo-application';
Application.applicationIdType: string | null
The ID of the application. On Android, this is the application ID. On iOS, this is the bundle ID.
On web, this is null.
Example
"com.cocoacasts.scribbles", "com.apple.Pages"
Application.applicationNameType: string | null
The human-readable name of the application that is displayed with the app's icon on the device's
home screen or desktop. On Android and iOS, this value is a string unless the name could not be
retrieved, in which case this value will be null. On web this value is null.
Example
"Expo", "Yelp", "Instagram"
Application.nativeApplicationVersionType: string | null
The human-readable version of the native application that may be displayed in the app store.
At time when native app is built, on Android, this is the version name set by version
in app config, and on iOS, the Info.plist value for CFBundleShortVersionString.
On web, this value is null.
Example
"2.11.0"
Application.nativeBuildVersionType: string | null
The internal build version of the native application that the app stores may use to distinguish
between different binaries. At the time when native app is built, On Android, this is the version
code set by android.versionCode in app config, and on iOS, the Info.plist value for
CFBundleVersion (set with ios.buildNumber value in app config in a standalone app).
On web, this value is null. The return type on Android and iOS is string.
Example
Android: "114", iOS: "2.11.0"
Application.getAndroidId()Gets the value of Settings.Secure.ANDROID_ID.
This is a hexadecimal string unique to each combination of app-signing key, user, and device.
The value may change if a factory reset is performed on the device or if an APK signing key changes.
For more information about how the platform handles ANDROID_ID in Android 8.0 (API level 26)
and higher, see Android 8.0 Behavior Changes.
On iOS and web, this function is unavailable.
In versions of the platform lower than Android 8.0 (API level 26), this value remains constant for the lifetime of the user's device. See the ANDROID_ID official docs for more information.
string
Example
"dd96dec43fb81c97"
Application.getInstallationTimeAsync()Gets the time the app was installed onto the device, not counting subsequent updates. If the app is uninstalled and reinstalled, this method returns the time the app was reinstalled.
PackageInfo.firstInstallTime.NSFileCreationDate
of the app's document root directory.null.A Promise that fulfills with a Date object that specifies the time the app
was installed on the device.
Example
await Application.getInstallationTimeAsync();
// 2019-07-18T18:08:26.121Z
Application.getInstallReferrerAsync()Gets the referrer URL of the installed app with the Install Referrer API
from the Google Play Store. In practice, the referrer URL may not be a complete, absolute URL.
Promise<string>
A Promise that fulfills with a string of the referrer URL of the installed app.
Example
await Application.getInstallReferrerAsync();
// "utm_source=google-play&utm_medium=organic"
Application.getIosApplicationReleaseTypeAsync()Gets the iOS application release type.
A Promise which fulfills with an ApplicationReleaseType.
Application.getIosIdForVendorAsync()Gets the iOS "identifier for vendor" (IDFV)
value, a string ID that uniquely identifies a device to the app’s vendor. This method may
sometimes return nil, in which case wait and call the method again later. This might happen
when the device has been restarted before the user has unlocked the device.
The OS will change the vendor identifier if all apps from the current app's vendor have been uninstalled.
Promise<string | null>
A Promise that fulfills with a string specifying the app's vendor ID. Apps from the
same vendor will return the same ID. See Apple's documentation for more information about the
vendor ID's semantics.
Example
await Application.getIosIdForVendorAsync();
// "68753A44-4D6F-1226-9C60-0050E4C00067"
Application.getIosPushNotificationServiceEnvironmentAsync()Gets the current Apple Push Notification (APN) service environment.
A Promise that fulfills with the string, either 'development' or 'production',
based on the current APN environment, or null on the simulator as it does not support registering with APNs.
Application.getLastUpdateTimeAsync()Gets the last time the app was updated from the Google Play Store.
A Promise that fulfills with a Date object that specifies the last time
the app was updated via the Google Play Store.
Example
await Application.getLastUpdateTimeAsync();
// 2019-07-18T21:20:16.887Z
PushNotificationServiceEnvironmentLiteral Type: multiple types
Maps to the aps-environment key in the native target's registered entitlements.
Acceptable values are: 'development' | 'production' | null
UNKNOWNApplicationReleaseType.UNKNOWN ＝ 0SIMULATORApplicationReleaseType.SIMULATOR ＝ 1ENTERPRISEApplicationReleaseType.ENTERPRISE ＝ 2DEVELOPMENTApplicationReleaseType.DEVELOPMENT ＝ 3AD_HOCApplicationReleaseType.AD_HOC ＝ 4APP_STOREApplicationReleaseType.APP_STORE ＝ 5| Code | Description |
|---|---|
ERR_APPLICATION_PACKAGE_NAME_NOT_FOUND | Error code thrown by getInstallationTimeAsync and getLastUpdateTimeAsync. This may be thrown if the package information or package name could not be retrieved. |
ERR_APPLICATION_INSTALL_REFERRER_UNAVAILABLE | The current Play Store app doesn't provide the installation referrer API, or the Play Store may not be installed. This error code may come up when testing on an AVD that doesn't come with the Play Store pre-installed, such as the Google Pixel 3 and Nexus 6. |
ERR_APPLICATION_INSTALL_REFERRER_CONNECTION | A connection could not be established to the Google Play Store. |
ERR_APPLICATION_INSTALL_REFERRER_REMOTE_EXCEPTION | A RemoteException was thrown after a connection was established to the Play Store. This may happen if the process hosting the remote object is no longer available, which usually means the process crashed. See this StackOverflow answer on RemoteException for more information. |
ERR_APPLICATION_INSTALL_REFERRER | General default case error code for the getInstallReferrerAsync method. This error code will be thrown if an exception occurred when getting the install referrer, but the exception was none of the more precise errors. The responseCode is provided along with the error. |
ERR_APPLICATION_INSTALL_REFERRER_SERVICE_DISCONNECTED | Connection to the install referrer service was lost. This error is thrown when an attempt was made to connect and set up the install referrer service, but the connection was lost. See the Android documentation for more information. |