1.通过unity 导出 包含obb的工程。

2.按照google 官方给定的obb命名方式，已经存放路径进行操作

Obb方式：https://developer.android.com/google/play/expansion-files

命名方式：[main | patch]。。 .obb

eg：main.314159.com.example.app.obb

2.1存放路径

Sd\Android\obb\package name\ main.versoncode.packagename.obb

3.使用jobb 脚本进行自行编译

脚本位置D:\normalsoft\sdk\tools\bin\jobb.bat

D:\normalsoft\sdk\tools\bin\jobb.bat -d E:\reWorldGame\unity\src\main\assets\ -o E:\reWorldGame\unity\src\main\out.obb -pn

com.codereview.reworldhaiwai -pv 10000

4.在本地测试obb包并尝试合并

如图放到指定的路径下

5.在显示Unity场景之前，挂载Obb文件。

本例在Application中调用该方法。进行untiy挂载

eg:

public void mountExpansion() {

Logger.d("开始挂载obb 文件");

storageManager = (StorageManager) getContext()

.getSystemService(Context.STORAGE_SERVICE);

String packageName = getPackageName();

String filePath = Environment.getExternalStorageDirectory()

+ "/Android/obb/" + packageName + "/" + "main."

+ AppConfig.VERSION_CODE + "." + packageName + ".obb";

Logger.d("开始 obb path=" + filePath);

final File mainFile = new File(filePath);

if (mainFile.exists()) {

Logger.d("STORAGE", "FILE: " + filePath + " Exists");

} else {

Logger.d("STORAGE", "FILE: " + filePath + " DOESNT EXIST");

}

String key = "thisIsMyPassword";

if (!storageManager.isObbMounted(mainFile.getAbsolutePath())) {

if (mainFile.exists()) {

if (storageManager.mountObb(mainFile.getAbsolutePath(), null, onObbStateChange)) {

Logger.d("STORAGE_MNT", "SUCCESSFULLY QUEUED");

} else {

Logger.d("STORAGE_MNT", "FAILED");

}

} else {

Logger.d("STORAGE", "Patch file not found");

}

}

}

OnObbStateChangeListener onObbStateChange = new OnObbStateChangeListener() {

@Override

public void onObbStateChange(String path, int state) {

super.onObbStateChange(path, state);

Logger.d("开始 PATH = "+ path);

Logger.d("开始 STATE = "+state + "");

if (state == OnObbStateChangeListener.MOUNTED) {

expansionFilePath = storageManager.getMountedObbPath(path);

Logger.d("开始 STORAGE-->MOUNTED" + expansionFilePath);

} else {

Logger.d("开始 Path: " + path + "; state: " + state);

}

}

};

输出内容如下：

20 = ERROR_INTERNAL ，内部错误

问题分析：

1.unity 导出obb包本身存在问题

2.Android 集成方式问题，排查未发现明显问题