How to get all data from unique key contained in "lasttime" firebase android and to display in listview android?

Question

How to get all data from unique key contained in "lasttime" firebase android and to display in listview android ?

i not understand about that, please help me. Because i make 2 app parent and child. I want to make a history list within one week and then update for the next week, how do I make it?

i use android studio gradle version 4.10.1 and firebase

my format firebase :

 "Sabtu" : {
        "lasttime" : {
          "-LebicAwu9h-zYnhAUD6" : "11 May 2019, 23:29:39",
          "-LebifkPfdnjOwOI-opj" : "11 May 2019, 23:29:54",
          "-LebiiB_NeaNenUNeWMO" : "11 May 2019, 23:30:04",
          "-LebikLsIbAmZjxL1g0p" : "11 May 2019, 23:30:12",
          "-LebimnFXGalhffJpG1s" : "11 May 2019, 23:30:22",
          "-LebipihTqXhKHF0tayj" : "11 May 2019, 23:30:34",
          "-LebiseAuZxDTqofUpFU" : "11 May 2019, 23:30:46",
          "-Lebiv_oLwpYS7IjKi7p" : "11 May 2019, 23:30:58",
          "-LebiyWFMtROe9xW7fVj" : "11 May 2019, 23:31:10",
          "-Lebj0RgHbvBnWT4LQf7" : "11 May 2019, 23:31:22",
          "-Lebj3rOzPhQEKlVdp4H" : "11 May 2019, 23:31:36",
          "-Lebj6n7XxFQuyFZcZZy" : "11 May 2019, 23:31:48",
          "-Lebj9iTGDM4kylT1OPB" : "11 May 2019, 23:32:00",
          "-LebjCdtaVhy3IJyqzmM" : "11 May 2019, 23:32:12",
          "-LebjF_Q3DhnfHiVv5HX" : "11 May 2019, 23:32:24",
          "-LebjIWE_xXBavjbQbFS" : "11 May 2019, 23:32:36",
          "-LebjLvfCUiy4tfz2BFN" : "11 May 2019, 23:32:50",
          "-LebjOr8HH7R1_RvbnlM" : "11 May 2019, 23:33:02",
          "-LebjRmbkJEejEUw_ld_" : "11 May 2019, 23:33:14",
          "-LebjUDr_klTBeaLaXDX" : "11 May 2019, 23:33:24",
          "-LebjX9RUp1QfDwTZJCt" : "11 May 2019, 23:33:36",
          "-Lebj_4qEwEZ9I0n9v05" : "11 May 2019, 23:33:48",
          "-Lebjc0bJU4Q16nvWWZN" : "11 May 2019, 23:34:00",
          "-Lebjex-WJPUXqtYQxGN" : "11 May 2019, 23:34:12",
          "-LeboRI4S9rJnB1T0M4u" : "11 May 2019, 23:55:03",
          "-LeboUGxiKzFCTOJVQ4i" : "11 May 2019, 23:55:15",
          "-LeboWigI-HZk3qM6lMq" : "11 May 2019, 23:55:25",
          "-LeboZ9xcgfHX5DZgV4u" : "11 May 2019, 23:55:35",
          "-LebobJL2NxcTQhPsBG_" : "11 May 2019, 23:55:48",
          "-LebodlQ315gMHFvO5mD" : "11 May 2019, 23:55:58"

not working and not display

Blockquote

You could go through the [Firebase Codelab](https://codelabs.developers.google.com/codelabs/firebase-android/#3) lesson and you will after that know what to do — Erik, May 11 '19 at 20:55

score 0 · Answer 1 · answered May 13 '19 at 06:41

try this it can help you to get your data

mReference = FirebaseDatabase.getInstance().getReference("Sabtu")
                .child("lasttime");
        mReference .addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
                   Log.d("children",dataSnapshot.getKey());
                users_list.add(dataSnapshot.getKey());            
            }

            @Override
            public void onCancelled(@NonNull DatabaseError databaseError) {

            }
        });

How to get all data from unique key contained in "lasttime" firebase android and to display in listview android?

1 Answers1