Offline issue with Firestore vs Firebase

Question

I converted one of my apps to the new Firestore. I am doing things like saving a document on a button click, and then in the onSuccess listener, going to a diff

Answer 1

For offline support you need to set Source.CACHE

docRef.get(Source.CACHE).addOnCompleteListener(new OnCompleteListener() {
    @Override
    public void onComplete(@NonNull Task task) {
        if (task.isSuccessful()) {
            // Document found in the offline cache
            DocumentSnapshot document = task.getResult();

        } else {
            //error
        }
    }
});