Firebase DB: Check if node has no children?

Question

How do I find out if a Firebase DB node has no children? Seems the only way to get data is with listeners, and they only fire when something is added or removed. In other wo

Answer 1

You can check whether the child is present in Firebase or not by using the getChildrenCount() or exists() method of DataSnapshot.

 searchFirebaseRef.addListenerForSingleValueEvent(new ValueEventListener() {
        @Override
        public void onDataChange(DataSnapshot dataSnapshot) {

        Log.d("FIREBASE",String.valueOf(dataSnapshot.getChildrenCount()));
        String childrenCount = String.valueOf(datasnapshot.getChildrenCount());

       if(childrenCount != null){

          }else{

          //No childrens in Firebase Database
       }

//OR 

       if(!dataSnapshot.exists()){

          //No data   

         }


      }
        @Override
        public void onCancelled(DatabaseError databaseError) {


        }

    });

See this doc for more info. I hope this helps you.