热更新热更新

1，游戏项目是使用脚本语言进行编写的（如lua,js）,那么一旦需要更新，则可以通过从服务器下载最新的脚本和资源，从而跳过平台直接实现在线更新
Cocos2dx的类asserts manager,它在引擎的extensions／assertmanager可以看到
【热更新】Assetsmanager传三个参数，资源的zip包路径，version路径，写文件的路径
然后调用assetsmanager的update函数进行下载更新
设置资源包名称
这里继续沿用cocos2dx的assetsmanager类中默认的名称：cocos2dx-update-temp-package.zip
如果想要修改文件名－－－
可以直接修改引擎下extensions/assets-manager/assetmanager.cpp的TEMP_PACKAGE_FILE_NAME
选定服务器地址和设置版本号
C++代码实现
新建upgrade类，继承自CCLayer
编辑Upgrade.h文件

//Upgrade.h //Created by Sharezer on 14-11-23. //#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

修改upgrade.cpp文件

//Upgrade.cpp #include "Upgrade.h" #include "CCLuaEngine.h"#if (CC_TARGET_PLATFORM != CC_PLATFORM_WIN32) #include #include #endifUSING_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; auto engine = LuaEngine::getInstance(); ScriptEngineManager::getInstance()->setScriptEngine(engine); if (engine->executeScriptFile("src/main.lua")) { return ; }}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(8); } 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(); }

如果是c++项目。可以自己调用相应的c++文件
如：
#include “helloWorldScene.h”
auto scene = helloWorld::scene();
Director::getInstance()->replaceScene(scene);
修改appdelegate.cpp文件调用upgrade类
Appdelegate.h无需修改，cpp稍微修改一下就可以了
头文件中加入#include “upgrade.h”,
主要是修改了appdelegate::applicationdidfinishlaunching函数中调用upgrade类

#include "AppDelegate.h" #include "CCLuaEngine.h" #include "SimpleAudioEngine.h" #include "cocos2d.h" #include "Upgrade.h"using namespace CocosDenshion; USING_NS_CC; using namespace std; AppDelegate::AppDelegate() { }AppDelegate::~AppDelegate() { SimpleAudioEngine::end(); }bool AppDelegate::applicationDidFinishLaunching() { // initialize director auto director = Director::getInstance(); auto glview = director->getOpenGLView(); if(!glview) { glview = GLView::createWithRect("dragan", Rect(0,0,900,640)); director->setOpenGLView(glview); }glview->setDesignResolutionSize(480, 320, ResolutionPolicy::NO_BORDER); // turn on display FPS director->setDisplayStats(true); // set FPS. the default value is 1.0/60 if you don't call this director->setAnimationInterval(1.0 / 60); //auto engine = LuaEngine::getInstance(); //ScriptEngineManager::getInstance()->setScriptEngine(engine); //if (engine->executeScriptFile("src/main.lua")) { // return false; //}auto scene = Scene::create(); auto layer =Upgrade::create(); Director::getInstance()->runWithScene(scene); scene->addChild(layer); return true; }// This function will be called when the app is inactive. When comes a phone call,it's be invoked too void AppDelegate::applicationDidEnterBackground() { Director::getInstance()->stopAnimation(); SimpleAudioEngine::getInstance()->pauseBackgroundMusic(); }// this function will be called when the app is active again void AppDelegate::applicationWillEnterForeground() { Director::getInstance()->startAnimation(); SimpleAudioEngine::getInstance()->resumeBackgroundMusic(); }

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文章图片

Xcode6之后，苹果开放了iOS的动态库编译权限。所谓的动态库，就是可以在运行时加载。正好利用这一特性，用来做iOS的热更新
建立一个动态库，如图。。。
动态库包含需要使用的viewcontroller,当然可以包含任何需要使用的自定义ui和逻辑
动态库的入口是一个jkDylib的类。它的.h和.m文件分别入下
//JKDylib.h
#import
@interface JKDylib:NSObject
-(void)showViewAfterVC:(id)fromVc inbundle:(NSBundle*)bundle;
@end
.m文件
//JKDylib.m
#import JKDylib.h
#import JKViewcontroller.h
@implementation JDKylib
-(void)showViewAfterVC:(id)fromVc inBundle:(NSBundle*)bundle
{
if(fromVc == nil){return; }
JKViewcontroller *vc =[[JKViewController alloc] init];
UIViewController *preVc ＝ (UIViewController *)fromVc;

if(preVc.navigationController)
{
[preVc.navigationController pushViewController:vc animated:YES];
}
else
{
UINavigationController *navi =[[UINavigationCcontroler alloc] init];
[navi pushViewController:vc animated:YES];
}
}
@end
上述代码意图非常明显
就是调用该动态库的时候
－(void)showViewAfterVC:(id)fromVc inBundle:(NSBundle*)bundle
在该函数中，创建一个viewController然后使用mainBundler的navigationController push新建的viewController,显示动态库的ui界面。
而动态库中的JKViewController内容则可以根据需要随便定义

2，完成上述动态库的编译工作后，现在需要做的就是在主工程中，写一段加载该动态库的代码
在最重要的viewcontroler里面，定义了加载动态库的方法
Viewcontroller.m

#import ViewController.h #import AFNetWorking.h@interface ViewController ()@end@implementation ViewController- (void)viewDidLoad { [super viewDidLoad]; self.view.backgroundColor = [UIColor whiteColor]; self.title = @bundle test; AFHTTPRequestOperationManager *manager = [[AFHTTPRequestOperationManager alloc] init]; manager.responseSerializer = [AFJSONResponseSerializer serializer]; NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@http://www.baidu.com]]; [manager HTTPRequestOperationWithRequest:request success:^(AFHTTPRequestOperation *operation, id responseObject) { NSLog(@request success); } failure:^(AFHTTPRequestOperation *operation, NSError *error) { NSLog(@request failure); }]; UIButton *btn = [[UIButton alloc] initWithFrame:CGRectMake(0, 100, 100, 50)]; btn.backgroundColor = [UIColor blueColor]; [btn addTarget:self action:@selector(btnHandler) forControlEvents:UIControlEventTouchUpInside]; [self.view addSubview:btn]; NSString *document = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject]; BOOL writeResult = [@hellow writeToFile:[NSString stringWithFormat:@%@/%@,document,@hello.plist] atomically:YES encoding:NSUTF8StringEncoding error:nil]; // Do any additional setup after loading the view, typically from a nib. }-(void)btnHandler {//AFHTTPRequestOperationManager *manager = [[AFHTTPRequestOperationManager alloc] init]; //manager.responseSerializer = [AFJSONResponseSerializer serializer]; // NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@http://www.baidu.com]]; // [manager HTTPRequestOperationWithRequest:request success:^(AFHTTPRequestOperation *operation, id responseObject) { //NSLog(@request success); // } failure:^(AFHTTPRequestOperation *operation, NSError *error) { // NSLog(@request failure); //}]; NSString *documentDirectory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject]; NSString *bundlePath = [NSString stringWithFormat:@%@/%@,documentDirectory,@JKDylb.framework]; if (![[NSFileManager defaultManager] fileExistsAtPath:bundlePath]) { NSLog(@file not exist ,nowreturn); return; } NSBundle *bundle = [NSBundle bundleWithPath:bundlePath]; if (!bundle || ![bundle load]) { NSLog(@bundle load error); }Class loadClass = [bundle principalClass]; if (!loadClass) { NSLog(@get bundle class fail); return; } NSObject *bundleObj = [loadClass new]; [bundleObj performSelector:@selector(showViewAfterVC:inBundle:) withObject:self withObject:bundle]; NSString *framePath = [[NSBundle mainBundle] privateFrameworksPath]; NSLog(@framePath is %@,framePath); NSLog(@file attri %@,bundle.localizations); //[bundleObj showViewAfterVC:self inBundle:bundle]; }- (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. }@end

viewController试图中有一个按钮，点击按钮后，从document目录下面找到动态库（虽然此时 document下并没有动态库）
，动态库的名称约定好JKDylib.framework.
然后使用NSBundle加载该动态库，具体见代码。
加载成功后，调用在动态库中实现的方法
[bundleObj performSelector:@selectoe(showViewAfterVC:inBundle:)withObject:self withObject:bundle]
编译该工程，然后运行到手机上，然后退出该程序

3. 打开itunes 然后将动态库同步到刚才的测试工程目录下。

4.在此打开测试工程程序，点击button，则会发现能够进入在动态库中定义的ui界面了。

关于动态更新的思考：

采用动态库方式实现热更新其实还是有一个问题，就是如何在主工程和动态库之间共享组建
比如网络组件以及其他等等第三方组件。
目前我没发现好方法，只能在动态库和主工程之间分别添加并且编译。