我尝试以这种方式挂载扩展文件:
final StorageManager storageManager = (StorageManager) getSystemService(STORAGE_SERVICE);
String obbPath = Environment.getExternalStorageDirectory() + "/Android/obb";
final String obbFilePath = obbPath + "/com.example/main.1.com.example.obb";
storageManager.mountObb(obbFilePath, "SecretKey", new OnObbStateChangeListener() {
@Override
public void onObbStateChange(String path, int state) {
super.onObbStateChange(path, state);
if (state == OnObbStateChangeListener.MOUNTED) {
onObbMounted();
} else {
Log.d("##", "Path: " + path + "; state: " + state);
}
}
});
但在运行时我得到状态21:ERROR_COULD_NOT_MOUNT:
Path: /storage/sdcard0/Android/obb/com.example/main.1.com.example.obb; state: 21
我已经添加了这个:
File f = new File(obbFilePath);
if (!f.exists()) {
Log.e("OBB", "FILE NOT FOUND!!!");
}
并且logcat说该文件存在。我不知道,为什么我能得到这个状态21?
答案 0 :(得分:3)
我遇到了同样的问题,我想通过obb上的Linux文件权限很多次Error 21
,而问题是Android无法访问它,因此StorageManager
启动Error 21
。创建.obb文件时,将权限和用户组更改为文件,如:
$chmod 664 <obb-filename>.obb
$chown user:group <obb-filename>.obb
然后再试一次,为我工作。