FirebaseRecyclerAdapter's PopulateViewHolder() Getting Called Before A Key Having Certain Values Gets Fully Removed Thus Giving Nullpointerexception

I am using FirebaseUI's FirebaseRecyclerAdapter in my app to fetch some data from a FirebaseDatabase reference and show it in a RecyclerView. I'm completing this task successfully.

Solution 1:

Well, I think I figured out a way.

Just placed some conditions in the code.

Here's the updated code:

    if (dataSnapshot.getValue() != null) {

         if (dataSnapshot.hasChild("pName") && dataSnapshot.hasChild("pUrl") && dataSnapshot.hasChild("cLat") && dataSnapshot.hasChild("cLng")) {

                 Map<String, String> map = (Map<String, String>) dataSnapshot.getValue();
                 pA = map.get("pName");
                 uA = map.get("pUrl");
                 String cLatS = map.get("cLat").trim();
                 currentLtAU = Double.parseDouble(cLatS);
                 String cLngS = map.get("cLng").trim();
                 currentLnAU = Double.parseDouble(cLngS);

                 viewHolder.setPName(pA);
                 viewHolder.setPUrl(uA);
                 viewHolder.setCurrentLatAU(String.valueOf(currentLtAU));
                 viewHolder.setCurrentLngAU(String.valueOf(currentLnAU));

          }
     }

and now everything works perfectly fine!