×ÔÊÊӦͼ±ê¾ÓÖдúÂë

local parentSize = parent:getContentSize()
local startX = (parentSize.width * 0.5) - (NODE_WIDTH * 0.5 * len) - (NODE_WIDTH * 0.5) -- ×ÔÊÊÓ¦¾ÓÖÐ
for i=1,len do
nodeList[i].:setPositionX(startX + i * NODE_WIDTH)
end