读取cocostudio的文件出错

为什么真机测试的时候m_layout = dynamic_cast<Layout*>(cocostudio::GUIReader::getInstance()->widgetFromJsonFile(“startUI/startUI.Exportjson”));这个资源找不到啊?assets下面有这个资源的啊?搞了两天了还是这样。
要是读取别的资源都能正常获得,就是读取.ExportJson文件时,说找不到文件,真机测试的时候打出的日志如下:
cocos2d: fullPathForFilename: No file found at startUI/startUI.Exportjson. Possible missing file.

mk文件我是这样写的
LOCAL_WHOLE_STATIC_LIBRARIES := cocos2dx_static
LOCAL_WHOLE_STATIC_LIBRARIES += cocosdenshion_static
LOCAL_WHOLE_STATIC_LIBRARIES += box2d_static
LOCAL_WHOLE_STATIC_LIBRARIES += cocostudio_static
LOCAL_WHOLE_STATIC_LIBRARIES += cocos_extension_static

include (BUILD_SHARED_LIBRARY) (call import-module,2d)
(call import-module,audio/android) (call import-module,Box2D)
(call import-module,editor-support/cocostudio) (call import-module,extensions)
请问哪里出问题了

没有人遇到这种问题吗??自己帮忙顶一下,等待高手

好吧,加上
#include “cocos-ext.h”
USING_NS_CC_EXT;
就没问题了