public void setDragEnabled(boolean enabled) {
        mDragEnabled = enabled;
    }
Allows for easy toggling between a DragSortListView
and a regular old ListView. If enabled, items are
draggable, where the drag init mode determines how
items are lifted (see {@link setDragInitMode(int)}).
If disabled, items cannot be dragged.

@param enabled Set <code>true</code> to enable list
item dragging
third_party/DragSortListView/src/com/mobeta/android/dslv/DragSortListView.java