Android和win32已经测试通过,理论上IOS也可以。
1、AssetsManagerDelegateProtocol
AssetsManagerDelegateProtocol,用于与服务器校验版本号,更新下载资源包,并对成功、出错、下载进度等进行回调。
2、资源包名称
所下载资源包名称默认为:cocos2dx-update-temp-package.zip。
如果想要修改文件名,直接修改引擎下 extensionsassets-managerAsetsManager.ccp中的TEMP_PACKAGE_FILE_NAME
3、服务器
下以是我的资源包路径和本版号。
http://shezzer.sinaapp.com/downloadTest/cocos2dx-update-temp-package.zip
http://shezzer.sinaapp.com/downloadTest/version.php
4、实现
// Upgrade.h //<img src="http://img.blog.csdn.net/20140728093037654?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvTGlhbmdzaGFvemU=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast" alt="" /> // Created by Sharezer on 14-07-26. // // #ifndef _UPGRADE_H_ #define _UPGRADE_H_ #include "cocos2d.h" #include "extensions/cocos-ext.h" class Upgrade : public cocos2d::CCLayer, public cocos2d::extension::AssetsManagerDelegateProtocol { public: Upgrade(); virtual ~Upgrade(); virtual bool init(); void upgrade(cocos2d::Ref* pSender); //检查版本更新 void reset(cocos2d::Ref* pSender); //重置版本 virtual void onError(cocos2d::extension::AssetsManager::ErrorCode errorCode); //错误信息 virtual void onProgress(int percent); //更新下载进度 virtual void onSuccess(); //下载成功 CREATE_FUNC(Upgrade); private: cocos2d::extension::AssetsManager* getAssetManager(); void initDownloadDir(); //创建下载目录 private: std::string _pathToSave; cocos2d::Label *_showDownloadInfo; }; #endif
#include "Upgrade.h" #include "HelloWorldScene.h" #if (CC_TARGET_PLATFORM != CC_PLATFORM_WIN32) #include <dirent.h> #include <sys/stat.h> #endif USING_NS_CC; USING_NS_CC_EXT; #define DOWNLOAD_FIEL "download" //下载后保存的文件夹名 Upgrade::Upgrade(): _pathToSave(""), _showDownloadInfo(NULL) { } Upgrade::~Upgrade() { AssetsManager* assetManager = getAssetManager(); CC_SAFE_DELETE(assetManager); } bool Upgrade::init() { if (!CCLayer::init()) { return false; } Size winSize = Director::getInstance()->getWinSize(); initDownloadDir(); _showDownloadInfo = Label::createWithSystemFont("", "Arial", 20); this->addChild(_showDownloadInfo); _showDownloadInfo->setPosition(Vec2(winSize.width / 2, winSize.height / 2 - 20)); auto itemLabel1 = MenuItemLabel::create( Label::createWithSystemFont("Reset", "Arail", 20), CC_CALLBACK_1(Upgrade::reset, this)); auto itemLabel2 = MenuItemLabel::create( Label::createWithSystemFont("Upgrad", "Arail", 20), CC_CALLBACK_1(Upgrade::upgrade, this)); auto menu = Menu::create(itemLabel1, itemLabel2, NULL); this->addChild(menu); itemLabel1->setPosition(Vec2(winSize.width / 2, winSize.height / 2 + 20)); itemLabel2->setPosition(Vec2(winSize.width / 2, winSize.height / 2 )); menu->setPosition(Vec2::ZERO); return true; } void Upgrade::onError(AssetsManager::ErrorCode errorCode) { if (errorCode == AssetsManager::ErrorCode::NO_NEW_VERSION) { _showDownloadInfo->setString("no new version"); } else if (errorCode == AssetsManager::ErrorCode::NETWORK) { _showDownloadInfo->setString("network error"); } else if (errorCode == AssetsManager::ErrorCode::CREATE_FILE) { _showDownloadInfo->setString("create file error"); } } void Upgrade::onProgress(int percent) { if (percent < 0) return; char progress[20]; snprintf(progress, 20, "download %d%%", percent); _showDownloadInfo->setString(progress); } void Upgrade::onSuccess() { CCLOG("download success"); _showDownloadInfo->setString("download success"); std::string path = FileUtils::getInstance()->getWritablePath() + DOWNLOAD_FIEL; //FileUtils::getInstance()->addSearchPath(path, true); auto scene = HelloWorld::scene(); Director::getInstance()->replaceScene(scene); } AssetsManager* Upgrade::getAssetManager() { static AssetsManager *assetManager = NULL; if (!assetManager) { assetManager = new AssetsManager("http://shezzer.sinaapp.com/downloadTest/cocos2dx-update-temp-package.zip", "http://shezzer.sinaapp.com/downloadTest/version.php", _pathToSave.c_str()); assetManager->setDelegate(this); assetManager->setConnectionTimeout(3); } return assetManager; } void Upgrade::initDownloadDir() { CCLOG("initDownloadDir"); _pathToSave = CCFileUtils::getInstance()->getWritablePath(); _pathToSave += DOWNLOAD_FIEL; CCLOG("Path: %s", _pathToSave.c_str()); #if (CC_TARGET_PLATFORM != CC_PLATFORM_WIN32) DIR *pDir = NULL; pDir = opendir(_pathToSave.c_str()); if (!pDir) { mkdir(_pathToSave.c_str(), S_IRWXU | S_IRWXG | S_IRWXO); } #else if ((GetFileAttributesA(_pathToSave.c_str())) == INVALID_FILE_ATTRIBUTES) { CreateDirectoryA(_pathToSave.c_str(), 0); } #endif CCLOG("initDownloadDir end"); } void Upgrade::reset(Ref* pSender) { _showDownloadInfo->setString(""); // Remove downloaded files #if (CC_TARGET_PLATFORM != CC_PLATFORM_WIN32) string command = "rm -r "; // Path may include space. command += """ + _pathToSave + """; system(command.c_str()); #else std::string command = "rd /s /q "; // Path may include space. command += """ + _pathToSave + """; system(command.c_str()); #endif getAssetManager()->deleteVersion(); initDownloadDir(); } void Upgrade::upgrade(Ref* pSender) { _showDownloadInfo->setString(""); getAssetManager()->update(); }
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运行:
Reset:重置版本号,办删除下载资源。
Upgrad:校验版本号,当有更新时下载新资源。
_pathToSave保存着文件的下载路径,压缩包下载下来后,将被自动解压到_pathToSave中。
以win32为,在cocos2d-xbuildDebug.win32 中,可以看到我们之前设置的下载目录download。
onSuccess中,当下载成功后,将跳转到HelloWorld。
这时可以在HelloWorld中直接使用已下载的资源。
具体实现代码见下载地址:点击打开链接
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