How to update data from Firebase Database without restarting Activity

Question

I can get data from Firebird DataBase but they are updated only if I restart the activity how to do it without restarting the activity.

The code snippet with the implementation of retrieving data

 ValueEventListener valueEventListener = new ValueEventListener() {
        @Override
        public void onDataChange(DataSnapshot dataSnapshot) {

                long coinsAmount = dataSnapshot.child("coinsAmount").getValue(Long.class);
                text.setText(String.valueOf(coinsAmount));

        }

        @Override
        public void onCancelled(@NonNull DatabaseError databaseError) {
            Log.d(TAG, databaseError.getMessage()); //Don't ignore errors!
        }
    };
    uidRef.addListenerForSingleValueEvent(valueEventListener);

ronginat · Accepted Answer · 2019-05-03 16:02:41Z

1

Change

uidRef.addListenerForSingleValueEvent(valueEventListener);

to:

uidRef.addValueEventListener(valueEventListener);

This way, your listener will be called each time the value in the DB changes, and not only once.

Read more about difference between valueEvent and singleValueEvent.

answered May 3, 2019 at 16:02

ronginat

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2 Comments

Manoj ahirwar Over a year ago

This doesn't answer the question. using addValueEventValueListener also restarting activity every time there is an update in the db

ronginat Over a year ago

The listener doesn't restart the activity, it seems that your case is different than the question's

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