//Getting instance FirebaseFirestore db = FirebaseFirestore.getInstance(); //Getting Reference to "new doc" document //You can get the path in this way too, lot easier! DocumentReference documentReference = db.collection("users").document("new doc"); //Calling the get() method with a callback function documentReference.get().addOnCompleteListener(new OnCompleteListener<DocumentSnapshot>() { @Override public void onComplete(@NonNull Task<DocumentSnapshot> task) { //Checking request result if (task.isSuccessful()) { //Request was successful but it never means that data is found DocumentSnapshot data = task.getResult(); if (data.exists()) { //document named "new doc" found //We know in which format we have writen data to that document, so we will get it in same manner //We used map to store that value, now we will get that Map<String, Object> map = data.getData(); //We know the value "waqas" was stored against key "username" String username = (String) map.get("username"); Toast.makeText(MainActivity.this, "username: " + username, Toast.LENGTH_SHORT).show(); } else { //document with name "new doc" not found at the path specified. } } else { //Request was not successful //Could be some rules or internet problem Log.i(TAG, "onComplete: Request unsuccessful, error: " + task.getException().getLocalizedMessage()); } } });