How To Get Firestore Data From A Loop And Send To Recyclerview Adaptor

I am loading data from firestore into recycler view android. It is a kind of e-commerce cart system in which the items' Uids are stored. I have my ArrayList of uids(I've already re

Solution 1:

You can do like this

     ArrayList<DocumentSnapshot> documentSnapshots = new ArrayList<>();
                
  //getting the document snapshot out of the uids
  int count = uids.size();
  for (int i = 0 ; i < uids.size() ; i++){
                    
             db.collection("items").document(uids.get(i)).get()
               .addOnCompleteListener(task1 -> {

                                documentSnapshots.add(task1.getResult());
                                if(documentSnapshots.size() == count){
                                  adaptorCart = new AdaptorCart(Cart.this , modelCart , db , documentSnapshots);
                                }
                                
                            });
                }