Recycler GridView list with sticky header shows two headers

[dbroy05]

Just using the following to show simple GridView list with sticky headers, but I get two headers, instead of one:
`public class WSStickyHeaderAdapter extends RecyclerView.Adapter<WSStickyHeaderAdapter.SuperHolder> implements StickyRecyclerHeadersAdapter {
private final ArrayList itemsWithHeaders = new ArrayList<>(); //has first item as Header and rest actual items to be displayed.
@OverRide
public long getHeaderId(int position) {
return itemsWithHeaders.get(position).getSuperCategory().charAt(0);
}

@Override
public RecyclerView.ViewHolder onCreateHeaderViewHolder(ViewGroup parent) {
    View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.section_header, parent, false);
    return new HeaderHolder(view);
}

@Override
public void onBindHeaderViewHolder(RecyclerView.ViewHolder holder, int position) {
    ((HeaderHolder)holder).bindItem(itemsWithHeaders.get(position));
}

@OverRide
public SuperHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view;
if (viewType == VIEW_TYPE_HEADER) {
view = LayoutInflater.from(parent.getContext()).inflate(R.layout.section_header, parent, false);
return new HeaderHolder(view);
} else {
view = LayoutInflater.from(parent.getContext()).inflate(R.layout.row_giftcard, parent, false);
return new ItemHolder(view);
}
}

@Override
public void onBindViewHolder(SuperHolder holder, int position) {
    final PItem mygift = itemsWithHeaders.get(position);
    holder.bindItem(mygift);
}

@Override
public int getItemViewType(int position) {
    PItem currentItem = itemsWithHeaders.get(position);
    if (currentItem.getSku().longValue() == 0) return VIEW_TYPE_HEADER;
    else return VIEW_TYPE_ITEM;
}

@Override
public int getItemCount() {
    return itemsWithHeaders != null ? itemsWithHeaders.size():0;
}

`
So, if the first item is header "Animal", there are 4 items with Cat, Dog, Duck and Fish, it shows:

Animal
Animal
Cat Dog
Duck Fish

What am I doing wrong here?

[dbroy05]

I got rid of two headers, now at first it shows like:

Animal
Cat Dog
Duck Fish

But when the list is scrolled up, it shows two headers text into one row like:

Animal Animal
Cat Dog
Duck Fish

[xinpengfei520]

my recyclerview have two data type , but only show one header , I don't known what's wrong ? I need help.