This document should be used as best practice guidance for all developers and can be used as the final check list for tests to be passed for developers seeking to have their applications signed. It is recommended these test cases be included as p

该代码实现的功能是读一个目录，把该目录下的所有文件名以列表的形式展现出来，用户需要在C盘的data下创建folder文件夹，这样来测试。如果想改变这个路径，用户可以修改代码。-The code to achieve the function of reading a directory, put all the files in the directory name to the list in the form of revealed itself, and users need the da

打开手机中的指定图片，并且将其保存在指定的路径中。-Open the phone specified in the pictures and save it in the specified path.