code: public void enableDragAndDrop() {
          if (Build.VERSION.SDK_INT < Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
              throw new UnsupportedOperationException("Drag and drop is only supported API levels 14 and up!");
          }
  
          mDragAndDropHandler = new DragAndDropHandler(this);
      }
docs: Enables the drag and drop functionality for this {@code DynamicListView}.
  <p/>
  <b>NOTE: This method can only be called on devices running ICS (14) and above, otherwise an exception will be thrown.</b>
  
  @throws java.lang.UnsupportedOperationException if the device uses an older API than 14.