How can i store to different storage buckets using Firebase Storage

Question

Is there a way to communicate/store data to another project/application using Firebase Storage? How can I initialize my application to call another Firebase Storage Bucket?

Answer 1

Referring to this More than one Firebase Database i just tried to configure the initialization of the Firebase Storage by using

   FirebaseOptions options = new FirebaseOptions.Builder()
            .setApiKey("AI...j0")
            .setApplicationId("1:5...e0")
            .setDatabaseUrl("https://myapp.firebaseio.com")
            .build();
    FirebaseApp secondApp = FirebaseApp.initializeApp(getApplicationContext(), options, "second app");
    //storage
    FirebaseStorage storage = FirebaseStorage.getInstance(secondApp);
    StorageReference storageRef = storage.getReferenceFromUrl("gs://.......");

Answer 2

While DreamBigAlvin's workaround still works, a simpler way is now built-in into the Firebase SDK:

StorageReference storageReference = 
    FirebaseStorage.getInstance("gs://my-custom-bucket")
                   .getReference();

Answer 3

Update: 2019

According to https://pub.dartlang.org/documentation/firebase_storage/latest/firebase_storage/FirebaseStorage-class.html

The method is now:

StorageReference reference =
      FirebaseStorage(storageBucket: "gs://my-bucket").ref();