MTK中查找子文件夹及子文件夹下的文件的代码，在08A平台上经过测试-MTK look the subfolders and sub-folder under the file code, tested platform in the 08A

手机文件浏览，可以查看手机根目录下的所有文件，包括子文件夹和其中的文件。-Phone file browser, you can view all the files in the root directory of the phone, including the subfolders and files.