The following steps are only required if you are using React Native 0.59 or earlier or need to manually integrate the library.

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

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

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

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

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.crashlytics.ReactNativeFirebaseCrashlyticsPackage;

Add the package to the registry:

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

Android requires additional steps in order to complete setup. View the Android Setup documentation for more information.

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

npx react-native run-android