实现方式:

这个方案没有采用google 的jobb 方式打包obb而是通过zip包的方式进行打包obb

在android部分获取Sound, Music,Video 时是通过 AssetFileDescriptor 进行读取的所以 通过设置 android 中的反射 addAssetPath 进行添加路径 下面代码会有用到注意查看

cocos 方面修改部分c++ 代码让cocos能够读取到obb包中的内容

obb包直接通过winrar 进行打包 这里注意 压缩时选择zip格式,压缩方式选择->存储

5.https://pan.baidu.com/s/1i507k5f zip读取类 google 官方库

obb打包方式

打包完毕文件后缀名 zip 修改obb (obb 命名方式 mian.versionCode.packageName.obb 注意:assets目录为根目录)

以下为代码实现 不要直接复制只是把需要修改的地方进行说明 根据自己情况进行修改

当前使用版本为2.x

3.x版本的应该大同小异自己修改下对应的地方就行了

1.获取obb包路径在项目的 MainActivity.java(这个文件可能名字不一样 继承于 Cocos2dxActivity)

public static String FATE_OBB_PATH= "";

public void onCreate(Bundle savedInstanceState) {

//获取obb 路径

FATE_OBB_PATH =getVirtualObbFileFullpath() ;//这句需要放在super.onCreate上面

super.onCreate(savedInstanceState);

...

}

public String getObbFileName() {

PackageInfo info = null;

try {

info = super.getPackageManager().getPackageInfo(super.getPackageName(), 0);

String fileName = "main." + info.versionCode + "." + getPackageName() + ".obb";

return fileName;

} catch (PackageManager.NameNotFoundException e) {

e.printStackTrace();

}

return "";

}

public String getVirtualObbFileFullpath(){

File sdcardDir = Environment.getExternalStorageDirectory();

String _path = getObbDir().getPath() + "/" + getObbFileName();

Log.e("===_path===", _path);

return _path;

}

2. Cocos2dxHelper 代码修改

public static ZipResourceFile obbzip = null;

public static void init(final Context pContext, final Cocos2dxHelperListener pCocos2dxHelperListener) {

...

// begin--------------------添加代码----------------------------

//检查obb文件是否存在

if(fileIsExists(MainActivity.FATE_OBB_PATH)){

//存在添加obb路径到cocos中 注意 nativeSetObbPath 方法是需要新添加的 下方会介绍

Cocos2dxHelper.nativeSetObbPath(MainActivity.FATE_OBB_PATH);

}

// end--------------------添加代码----------------------------

Cocos2dxHelper.nativeSetApkPath(applicationInfo.sourceDir);

Cocos2dxHelper.sCocos2dxAccelerometer = new Cocos2dxAccelerometer(pContext);

Cocos2dxHelper.sCocos2dMusic = new Cocos2dxMusic(pContext);

int simultaneousStreams = Cocos2dxSound.MAX_SIMULTANEOUS_STREAMS_DEFAULT;

if (Cocos2dxHelper.getDeviceModel().indexOf("GT-I9100") != -1) {

simultaneousStreams = Cocos2dxSound.MAX_SIMULTANEOUS_STREAMS_I9100;

}

Cocos2dxHelper.sCocos2dSound = new Cocos2dxSound(pContext, simultaneousStreams);

Cocos2dxHelper.sAssetManager = pContext.getAssets();

//设置压缩包

PackageInfo info = null;

try {

info = pContext.getPackageManager().getPackageInfo(pContext.getPackageName(), 0);

Cocos2dxHelper.obbzip = APKExpansionSupport.getAPKExpansionZipFile(pContext,info.versionCode,0);

} catch (PackageManager.NameNotFoundException e1) {

e1.printStackTrace();

} catch (IOException e1) {

e1.printStackTrace();

}

// end--------------------添加代码----------------------------

PSNetwork.init(pContext);

Cocos2dxBitmap.setContext(pContext);

Cocos2dxETCLoader.setContext(pContext);

}

//检查obb文件是否存在

public static boolean fileIsExists(String strFile)

{

try

{

File f=new File(strFile);

if(!f.exists())

{

return false;

}

}

catch (Exception e)

{

return false;

}

return true;

}

private static native void nativeSetApkPath(final String pApkPath);

//nativeSetObbPath 设置obb路径方法

private static native void nativeSetObbPath(final String pObbPath);

3. 修改 Cocos2dxMusic.java 和 Cocos2dxSound.java 将获得AssetFileDescriptor的地方加入obb包查找

//Cocos2dxMusic.java

final AssetFileDescriptor assetFileDescritor = Cocos2dxHelper.obbzip.getAssetFileDescriptor("assets/"+pPath);

if(assetFileDescritor == null) {

final AssetFileDescriptor assetFileDescritor1 = this.mContext.getAssets().openFd(pPath);

mediaPlayer.setDataSource(assetFileDescritor1.getFileDescriptor(), assetFileDescritor1.getStartOffset(), assetFileDescritor1.getLength());

}else{

mediaPlayer.setDataSource(assetFileDescritor.getFileDescriptor(), assetFileDescritor.getStartOffset(), assetFileDescritor.getLength());

}

//Cocos2dxSound.java

final AssetFileDescriptor assetFileDescritor = Cocos2dxHelper.obbzip.getAssetFileDescriptor("assets/"+pPath);

if(assetFileDescritor == null) {

final AssetFileDescriptor assetFileDescritor1 = this.mContext.getAssets().openFd(pPath);

soundID = this.mSoundPool.load(assetFileDescritor1, 0);

}else{

soundID = this.mSoundPool.load(assetFileDescritor, 0);

}

4. 修改 Java_org_cocos2dx_lib_Cocos2dxHelper.cpp

string g_apkPath;

//添加obb path

string g_obbPath;

//添加设置obbpath 方法

JNIEXPORT void JNICALL Java_org_cocos2dx_lib_Cocos2dxHelper_nativeSetObbPath(JNIEnv* env, jobject thiz, jstring obbPath) {

g_obbPath = JniHelper::jstring2string(obbPath);

}

//添加获取obbpath 方法

const char * getObbPath() {

return g_obbPath.c_str();

}

5.修改 CCFileUtilsAndroid.h

//添加方法

extern const char * getObbPath();

6.修改 CCFileUtilsAndroid.cpp

static ZipFile *s_pZipFile = NULL;

//在 s_pZipFile 下添加一个 obb zip包解析

static ZipFile *s_pZipFileobb = NULL;

//在sharedFileUtils() 中创建obb的zip

CCFileUtils* CCFileUtils::sharedFileUtils()

{

if (s_sharedFileUtils == NULL)

{

s_sharedFileUtils = new CCFileUtilsAndroid();

s_sharedFileUtils->init();

std::string resourcePath = getApkPath();

s_pZipFile = new ZipFile(resourcePath, "assets/");

// begin ------------------代码添加

//获取obb路径

std::string resourcePath_Obb = getObbPath();

// 创建obbzip

s_pZipFileobb = new ZipFile(resourcePath_Obb,"assets/");

// end --------------------代码添加

}

return s_sharedFileUtils;

}

CCFileUtilsAndroid::~CCFileUtilsAndroid()

{

CC_SAFE_DELETE(s_pZipFile);

//销毁

CC_SAFE_DELETE(s_pZipFileobb);

}

//文件检查中的修改

bool CCFileUtilsAndroid::isFileExist(const std::string& strFilePath)

{

if (0 == strFilePath.length())

{

return false;

}

bool bFound = false;

// Check whether file exists in apk.

if (strFilePath[0] != '/')

{

std::string strPath = strFilePath;

if (strPath.find(m_strDefaultResRootPath) != 0)

{// Didn't find "assets/" at the beginning of the path, adding it.

strPath.insert(0, m_strDefaultResRootPath);

}

if (s_pZipFile->fileExists(strPath))

{

bFound = true;

}

// begin -------------代码添加

if(!bFound){

if (s_pZipFileobb->fileExists(strPath))

{

bFound = true;

}

}

// end -----------------代码添加

}

else

{

FILE *fp = fopen(strFilePath.c_str(), "r");

if(fp)

{

bFound = true;

fclose(fp);

}

}

return bFound;

}

//文件获取方法中的代码修改

unsigned char* CCFileUtilsAndroid::doGetFileData(const char* pszFileName, const char* pszMode, unsigned long * pSize, bool forAsync)

{

unsigned char * pData = 0;

if ((! pszFileName) || (! pszMode) || 0 == strlen(pszFileName))

{

return 0;

}

string fullPath = fullPathForFilename(pszFileName);

if (fullPath[0] != '/')

{

if (forAsync)

{

pData = s_pZipFile->getFileData(fullPath.c_str(), pSize, s_pZipFile->_dataThread);

// begin -------------代码添加

if (! pData)

{

pData = s_pZipFileobb->getFileData(fullPath.c_str(), pSize, s_pZipFile->_dataThread);

}

//end -------------代码添加

}

else

{

pData = s_pZipFile->getFileData(fullPath.c_str(), pSize);

// begin -------------代码添加

if (! pData)

{

pData = s_pZipFileobb->getFileData(fullPath.c_str(), pSize);

}

//end -------------代码添加

}

}

else

{

do

{

// read rrom other path than user set it

//CCLOG("GETTING FILE ABSOLUTE DATA: %s", pszFileName);

FILE *fp = fopen(fullPath.c_str(), pszMode);

CC_BREAK_IF(!fp);

unsigned long size;

fseek(fp,0,SEEK_END);

size = ftell(fp);

fseek(fp,0,SEEK_SET);

pData = new unsigned char[size];

size = fread(pData,sizeof(unsigned char), size,fp);

fclose(fp);

if (pSize)

{

*pSize = size;

}

} while (0);

}

if (! pData)

{

std::string msg = "Get data from file(";

msg.append(pszFileName).append(") failed!");

CCLOG("%s", msg.c_str());

}

return pData;

}

测试:

Root手机

安装 re文件管理器

re文件管理器

挂载为可读写

挂载为可读写

上传obb包

检查是否有 对应目录 /storage/emulated/0/Android/obb/com.k0204.game/ 如果没有自己创建一下

adb push E:\main.5.com.k0204.game.obb /storage/emulated/0/Android/obb/com.k0204.game/