public void setDropListener(DropListener l) {
        mDropListener = l;
    }
This better reorder your ListAdapter! DragSortListView does not do this
for you; doesn't make sense to. Make sure
{@link BaseAdapter#notifyDataSetChanged()} or something like it is called
in your implementation. Furthermore, if you have a choiceMode other than
none and the ListAdapter does not return true for
{@link ListAdapter#hasStableIds()}, you will need to call
{@link #moveCheckState(int, int)} to move the check boxes along with the
list items.

@param l
third_party/DragSortListView/src/com/mobeta/android/dslv/DragSortListView.java