Firebase How To Retrieve The Data Under A Push Key

Question

I can't figure out how to retrieve my data without variable under the push key, so please help.

    reference = FirebaseDatabase.getInstance().getReference("FireAlarm");
    reference.addValueEventListener(new ValueEventListener() {
        @Override
        public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
            for (DataSnapshot keySnapshot : dataSnapshot.getChildren()){
                dataBaru = keySnapshot.getKey();
                data.setText(dataBaru);
            }
        }

It seems like you've shared wrong screenshot. And could you elaborate the problem with current code? — DeveloperKurt, Mar 26 '19 at 08:03
i want to retrieved the "32cm" (all the data in the apostrophe) from those random push() key. i able to retrieved only the keys but not the data . — Izz, Mar 26 '19 at 08:34
i did some changes to my coding. actually the data is being sent from nodemcu. — Izz, Mar 26 '19 at 09:10

Alex Mamo · Accepted Answer · 2019-03-26T13:46:13.373

2

When you are using the following line of code:

dataBaru = keySnapshot.getKey();

You are getting only those pushed keys. If you want to get the values corresponding to the keys, please use the following line of code:

dataBaru = keySnapshot.getValue(String.class);

One more thing, when looping through a DataSnapshot object using getChildren() method, you're most likely getting more than one result so you can simply set it to a TextView. So probably you should use a ListView for that or even better a RecyclerView.

edited Mar 26 '19 at 13:46

answered Mar 26 '19 at 10:03

Alex Mamo

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thanks for the help , it works , planning on using recyclerview instead :) – Izz Mar 26 '19 at 10:21
For a `RecyclerView`, **[this](https://stackoverflow.com/questions/49383687/how-can-i-retrieve-data-from-firebase-to-my-adapter/49384849)** is a recommended way in which you can retrieve data from a Firebase realtime database using `FirebaseRecyclerAdapter`. – Alex Mamo Mar 26 '19 at 10:22

Firebase How To Retrieve The Data Under A Push Key

1 Answers1