local ui
local function createLayerUI()
	if not ui then
		ui=cc.Layer:create();
		createLayerUI=nil;
	end
	return ui;
end
local sceneGame=cc.Scene:create()
sceneGame:addChild(createLayerUI())
cc.Director:getInstance():runWithScene(sceneGame)
ui:addChild(ccs.GUIReader:shareReader():widgetFromJsonFile("res/SampleChangeEquip_1.json"))

cocos2dx使用cocostudio导出的ui,布布扣,bubuko.com
原文:http://www.cnblogs.com/marcher/p/cocos2dxui1.html