Retrieving Document Id from Firestore Collection (Android)

Question

I\'m trying to extract the auto-generated Id under a document so I can use it elsewhere.

Here is the full code:

mStartChatButton.setOnClickListener(new V         


        

Answer 1

For part one, you'll want to get the document reference in the onSuccess function vs. void. So that would look something like this -

      mWhammyUsersCollection.document(mCurrentUserId).collection("my-chats").add(myChatFields)
                .addOnSuccessListener(new OnSuccessListener() {
        @Override
        public void onSuccess(DocumentReference documentReference) { 


                String chatId = documentReference.getId();

                Log.v("CHATS", chatId);

                myChatFields.put("chatCardId", chatId);

                Intent goToChatActivity = new Intent(UserProfileActivity.this,
                        ChatActivity.class);
                startActivity(goToChatActivity);

            }
        });