TableView: The problem with addRowRange

public void addItemRange(int positionStart, int itemCount, List<T> items) {
        if (m_jItemList.size() > positionStart + itemCount && items != null) {
            for (int i = positionStart; i < positionStart + itemCount + 1; i++) {
                if (i != RecyclerView.NO_POSITION) {
                    m_jItemList.add(i, items.get(i));
                }
            }
            notifyItemRangeInserted(positionStart, itemCount);
        }
    }

1. The source code to add item range.
2. The list size is never gonna greater than position start + item count +1.
3. Do u mean m_jItemList.size() >= positionStart?
4. for (int i = positionStart; i < positionStart + itemCount + 1; i++) { and dont add 1 its gonna get null in items if you adding it at the ends of Cells

What i am change is positionStart is the where to adding the item itemCount is the total of the New item you want to add, items is the new list of the item.

 public void addItemRange(int positionStart, int itemCount, List<T> items) {
        if (m_jItemList.size() >= positionStart && items != null) {
            for (int i = positionStart; i < positionStart + itemCount; i++) {
                if (i != RecyclerView.NO_POSITION) {
                    m_jItemList.add(i, items.get(i - positionStart));
                }
            }
            notifyItemRangeInserted(positionStart, itemCount);
        }
    }

Also there is issue with removeRowRange.

    public void deleteItemRange(int positionStart, int itemCount) {
        if (m_jItemList.size() >= positionStart + itemCount) {
            for (int i = positionStart; i < positionStart + itemCount; i++) {
                if (i != RecyclerView.NO_POSITION) {
                    m_jItemList.remove(positionStart);
                }
            }
            notifyItemRangeRemoved(positionStart, itemCount);
        }
    }

Do u think it should be remove the Same position not the i because the List getting smaller. otherwise it gonna out of position