firebase/flutter - Play Integrity - where to place the initialization code

Question

I'm using this guide to implement the new app check Play Integrity: https://firebase.google.com/docs/app-check/android/play-integrity-provider?authuser=0&hl=de#java_1

at step 3 it is mentioned to add this initialization code:

FirebaseApp.initializeApp(/*context=*/ this);
FirebaseAppCheck firebaseAppCheck = FirebaseAppCheck.getInstance();
firebaseAppCheck.installAppCheckProviderFactory(
        PlayIntegrityAppCheckProviderFactory.getInstance());

But where??

I tried it in main.dart, MainActivity.java and Application.jave with no success. Maybe I need some more packages? it would help me a lot if i know where to try

Answer 1

the code must be inserted in the MainActivity.java and you need additional these package (not mentioned in the google guide)

In MainActivity.java:

import com.google.firebase.FirebaseApp;
import com.google.firebase.appcheck.FirebaseAppCheck;
import com.google.firebase.appcheck.playintegrity.PlayIntegrityAppCheckProviderFactory;

In pubspec.yaml:

firebase_app_check: ^0.1.1+8

this helped me: Error while handling Appcheck with flutter