DynamicGridView.startEditMode(int) doesn't work properly without calling setOnDragListener

STR: in the example comment out gridView.setOnDragListener call in GridActivity. Now when long clicking on an item the dragging doesn't start immediately. Add gridView.setOnDragListener back (even with empty onDragStarted and onDragPositionsChanged) - and the dragging will start immediately after long click.