Expo

Expo support

When you run an Expo project on the web, the package uses its web implementation with Google Identity Services.

The Expo Go native app cannot load this package's custom Android or iOS module. To test Android Credential Manager, create and install an Android development build:

npx expo run:android

You can also use an EAS development build. Use npx expo start --web when you only need to test the web implementation.

Config plugin

Add the plugin to your Expo config:

export default {
  plugins: [
    [
      '@pricava/react-native-google-credential',
      {
        iosClientId: process.env.GOOGLE_IOS_CLIENT_ID,
        iosUrlScheme: process.env.GOOGLE_IOS_URL_SCHEME,
      },
    ],
  ],
};

The plugin writes:

• GIDClientID to Info.plist when iosClientId is provided.
• The iOS URL scheme from iosUrlScheme, or derives it from iosClientId.

The plugin also reads GOOGLE_IOS_CLIENT_ID and GOOGLE_IOS_URL_SCHEME from the environment when those props are omitted.

Runtime support

Expo development builds use the same React Native TurboModule/native module as bare React Native apps. The Expo config plugin only handles iOS native configuration.

Rebuild after config changes

Any native config change requires rebuilding the app:

npx expo prebuild
npx expo run:ios
npx expo run:android

For EAS builds, commit the config changes and trigger a new build.