原因：要送个消消乐游戏给人，有个现成的cocos2dx 2.2项目，但搭建cocos2dx 2.2版本的安卓编译环境各种失败，于是就想升级到3.8，方便编译安卓apk包。

归纳变化如下

1 CC开头的类名，如果找不到，去掉CC

2 触摸事件变更。

覆盖ccTouchBegan，ccTouchMoved，ccTouchEnded，ccTouchCancelled触摸函数修改为事件监听

EventListenerTouchOneByOne *touchListener = EventListenerTouchOneByOne::create();
touchListener->onTouchBegan = CC_CALLBACK_2(GameLayer::ccTouchBeganCallback,this);
touchListener->onTouchMoved = CC_CALLBACK_2(GameLayer::ccTouchMovedCallback,this);
_eventDispatcher->addEventListenerWithSceneGraPHPriority(touchListener,this);

3 select 改为CC_CALLBACK_*

CCMenuItemImage *playMenuItem = CCMenuItemImage::create(PLAY_IMAGE,PLAY_IMAGE_PRESSED,this,menu_selector(PlayMenu::play));

=>CCMenuItemImage *playMenuItem = CCMenuItemImage::create(PLAY_IMAGE,CC_CALLBACK_0(PlayMenu::play,this));

4 宏变更

ccBLACK =》Color3B::BLACK

5 时间接口变更

struct cc_timeval now;
CCTime::gettimeofdayCocos2d(&now,NULL);

=》 struct timeval now;
gettimeofday(&now,NULL);

3 如果增减.h .cpp 注意修改安卓下的 Android.mk文件包含,

LOCAL_SRC_FILES :

LOCAL_C_INCLUDES :

附上官方升级文档：

http://www.cocos2d-x.org/wiki/User_Tutorial-CPP_Migration_from_v2_2_*_to_v3_0

《C++ MIGRATION FROM V2 2 * TO V3 0》