Add new native module to app in android - react-native-firebase

I am trying to add react-native-firebase to the app in android

Since the does not extend react application, it is not possible to link additional native modules to android application.

Where should I add a new native package in android app ? I want to modify to add the native package. However the MainApplication does not extend ReactApplication

public class MainApplication extends Application {
public void onCreate() {

    if (!LeakCanary.isInAnalyzerProcess(this)) {

Ok, realized that sdk project in android is the real react native application.

I have instead manually inctegrated the react native package into SDK project instead and added the package to ReactInstanceManagerHolder.

Once that was done adding rnfirebase worked like charm for android.


Can you please elaborate the steps?