react-native-firebase/docs/functions/android.md

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Android Setup	Manually integrate Cloud Functions into your Android application.

Android Manual Installation

The following steps are only required if your environment does not have access to React Native auto-linking.

Update Gradle Settings

Add the following to your projects /android/settings.gradle file:

include ':@react-native-firebase_functions'
project(':@react-native-firebase_functions').projectDir = new File(rootProject.projectDir, './../node_modules/@react-native-firebase/functions/android')

Update Gradle Dependencies

Add the React Native Functions module dependency to your /android/app/build.gradle file:

dependencies {
  ...
  implementation project(path: ":@react-native-firebase_functions")
}

Add package to the Android Application

Import and apply the React Native Firebase module package to your /android/app/src/main/java/**/MainApplication.java file:

Import the package:

import io.invertase.firebase.analytics.ReactNativeFirebaseFunctionsPackage;

Add the package to the registry:

protected List<ReactPackage> getPackages() {
  return Arrays.asList(
    new MainReactPackage(),
    new ReactNativeFirebaseFunctionsPackage(),

Rebuild the project

Once the above steps have been completed, rebuild your Android project:

react-native run-android