Android 工程打包资源文件-OBB文件设置
作者：互联网
Android 工程打包资源文件-OBB文件设置
设备/引擎：Mac（11.6）/cocos
开发工具：Android studio(4.1.2)
开发语言：java
开发需求：对工程的资源文件进行打包处理
当工程中的资源文件大于100m时，就不能直接将资源文件，而需要将资源文件打包成OBB文件再进行上传。话不多说，具体步骤如下：
1.在工程的.java中添加以下代码：
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);
...
}
//获取访问权限
private void requestPermission(){
if (ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED){
if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.READ_EXTERNAL_STORAGE)){
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, 0);
}else {
ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, 0);
}
}
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode){
case 0:
{
if (grantResults.length >0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
Log.i(TAG,"onRequestPermissionsResult granted");
}else {
Log.i(TAG,"onRequestPermissionsResult denied");
}
}
break;
}
}
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(){
if (Environment.getExternalStorageState()
.equals(Environment.MEDIA_MOUNTED)) {
File sdcardDir = Environment.getExternalStorageDirectory();
String _path = getObbDir().getAbsolutePath() + "/" + getObbFileName();
// String _path = sdcardDir+"/Android/obb/"+getPackageName()+"/"+ getObbFileName();
Log.e("===_path===", _path);
File f=new File(getObbDir().getAbsolutePath() + "/");
// File f=new File(strFile);
if(!f.exists())
// if(!f.canRead())
{
boolean isMkdir = f.mkdir();
if (isMkdir){
return _path;
}else {
return null;
}
// return false;
}
return _path;
}else {
return null;
}
}
2.在Cocos2dxHelper.java中修改代码如下：
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----------------------------
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.在Cocos2dxMusic.java和Cocos2dxSound.java代码修改，用来查找obb包：
//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文件：
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.在CCFileUtilsAndroid.cpp中修改：
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;
}
7.在Cocos2dxActivity中修改代码，目的是只有用户点击允许访问存储后才会进入游戏：
（1）：在onCreate()中的代码：
super.onCreate(savedInstanceState);
instance = this;
this.mHandler = new Cocos2dxHandler(this);
this.init();
修改为：
super.onCreate(savedInstanceState);
sContext = this;
instance = this;
this.mHandler = new Cocos2dxHandler(this);
if (ContextCompat.checkSelfPermission(JoyPreschool.getContext(), Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED){
}else {
this.init();
Cocos2dxHelper.init(this, this);
}
（2）：在onResume()、onPause()中的代码：
super.onResume();
Cocos2dxHelper.onResume();
this.mGLSurfaceView.onResume();
super.onPause();
Cocos2dxHelper.onPause();
this.mGLSurfaceView.onPause();
修改为：
super.onResume();
Cocos2dxHelper.onResume();
if (this.mGLSurfaceView != null){
this.mGLSurfaceView.onResume();
}
super.onPause();
Cocos2dxHelper.onPause();
if (this.mGLSurfaceView != null){
this.mGLSurfaceView.onPause();
}
8.在AndroidMenifest.xml中添加权限：
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
9.用WinRAR将工程的资源文件-assets文件夹压缩，压缩方式为存储(Store)，压缩文件格式为zip；
10.将压缩后的文件重新命名，obb文件名为main.版本号.包名.obb，例如版本号为10，包名为com.jpt.game，文件名为main.10.com.jpt.game.obb;
至此有关打包OBB文件的设置全部完成。
希望能给大家带来帮助！！！有什么问题可以评论私信咨询了解~
标签：文件,return,Cocos2dxHelper,OBB,obb,添加,new,Android,String 来源： https://blog.csdn.net/weixin_44309889/article/details/121922471