交叉编译的时候 一直报错 如下：
Compile++ thumb: cocos2dcpp_shared <= main.cpp
Compile++ thumb: cocos2dcpp_shared <= AppDelegate.cpp
Compile++ thumb: cocos2dcpp_shared <= HelloWorldScene.cpp
jni/…/…/Classes/HelloWorldScene.cpp: In member function ‘virtual bool HelloWorld::init()’:
jni/…/…/Classes/HelloWorldScene.cpp:58
error: ‘myLayout’ does not name a type
jni/…/…/Classes/HelloWorldScene.cpp:59:16: error: ‘myLayout’ was not declared in this scope
代码：
ul = UILayer::create();
auto myLayout = dynamic_cast<Layout*>(GUIReader::shareReader()->widgetFromJsonFile(“button/button.ExportJson”));
ul->addWidget(myLayout);
this->addChild(ul);
