目标平台
： Android
详细报错信息，包含调用堆栈
：没有错误信息
03-06 19:32:19.040 29577-29577/org.cocos2d.helloworld E/openSDK_LOG: org.cocos2d.helloworld SDK_VERSION:3.3.0.lite
03-06 19:32:19.240 29577-29606/org.cocos2d.helloworld E/cocos2d-x: cocos2d: warning, Director::setProjection() failed because size is 0
重现方式：
将当前版本作为最新版本B
删除当前版本某些功能作为作为上一个版本A
将A、B版本分别打包功能正常
A版本升级到B版本，始终无法获得最新功能
只改变版本号，将A最为最新版本，B升级到A正常升级
之前哪个版本是正常的：
将功能多的版本B升级到功能少的版本A，正常
手机型号：华为荣耀，小米5S
出现概率：100%
额外线索：
资源正常下载，并进行了重启。重启后查看调试日志，在资源管理器检测更新后又自动将manifestRootPath添加到了默认的资源搜索路径前，但缓存的清单文件cachedManifest文件存在，具体调试日志如下
init-->searchPath: ["assets/"], cacheManifestIsExist: false
storageSearchPathFiles: ["/data/data/org.cocos2d.helloworld/files/eliminate-remote-asset/./","/data/data/org.cocos2d.helloworld/files/eliminate-remote-asset/../"]
checkUpdate before-->searchPath: ["assets/res/raw-assets/","assets/"]
checkUpdate after-->searchPath: ["assets/res/raw-assets/","assets/"]
restartGame-->searchPath: ["/data/data/org.cocos2d.helloworld/files/eliminate-remote-asset/","assets/res/raw-assets/","assets/"]
restartGame-->newSearchPath: ["/data/data/org.cocos2d.helloworld/files/eliminate-remote-asset/"], HotUpdateSearchPaths: ["/data/data/org.cocos2d.helloworld/files/eliminate-remote-asset/","/data/data/org.cocos2d.helloworld/files/eliminate-remote-asset/","assets/res/raw-assets/","assets/"]
restartGame-->localHotUpdateSearchPath: "[\"/data/data/org.cocos2d.helloworld/files/eliminate-remote-asset/\",\"/data/data/org.cocos2d.helloworld/files/eliminate-remote-asset/\",\"assets/res/raw-assets/\",\"assets/\"]"
init-->searchPath: ["/data/data/org.cocos2d.helloworld/files/eliminate-remote-asset/","/data/data/org.cocos2d.helloworld/files/eliminate-remote-asset/","assets/res/raw-assets/","assets/"], cacheManifestIsExist: true
storageSearchPathFiles: ["/data/data/org.cocos2d.helloworld/files/eliminate-remote-asset/./","/data/data/org.cocos2d.helloworld/files/eliminate-remote-asset/../","/data/data/org.cocos2d.helloworld/files/eliminate-remote-asset/src/","/data/data/org.cocos2d.helloworld/files/eliminate-remote-asset/res/","/data/data/org.cocos2d.helloworld/files/eliminate-remote-asset/project.manifest"]
checkUpdate before-->searchPath: ["assets/res/raw-assets/","/data/data/org.cocos2d.helloworld/files/eliminate-remote-asset/","/data/data/org.cocos2d.helloworld/files/eliminate-remote-asset/","assets/res/raw-assets/","assets/"]
checkUpdate after-->searchPath: ["/data/data/org.cocos2d.helloworld/files/eliminate-remote-asset/","/data/data/org.cocos2d.helloworld/files/eliminate-remote-asset/","assets/res/raw-assets/","assets/"]
2324209458:
我在A版本添加更新检测，检测到B版本，更新后重启B版本，再次检测热更新就不行。如果B版本不检测热更新，也就不会把manifestRoot添加到搜索路径前，然后资源就正
热更跟着官网那个 热更走 肯定是可以的 至少我是可以的了
代码方面 他那个工具我没用
官方demo，检测到已更新，并没有重启引擎，导致更新资源目录没生效，下面这个分支加个代码。
case jsb.EventAssetsManager.ALREADY_UP_TO_DATE:
needRestart = true; // 添加这句代码
第一次重启生效，第二次启动不生效，很可能是因为调用了cc.sys.localStorage.clear();这个方法，今天刚好踩到这个坑里了。
热更新下载资源完成后 ，会将新的资源路径保存到本地缓存中
cc.sys.localStorage.setItem(‘HotUpdateSearchPaths’, JSON.stringify(searchPaths));
重启之后， 如果调用了cc.sys.localStorage.clear()这个方法，下次重启进来就回到原来的版本了！！！！！！
