Android-FilePicker-master

代码说明：

  一个文件选择器，允许灵活选择图像和视频。它还支持通过指定文件类型来选择文件。要使用这个库，您必须将项目迁移到Androidx(A filepicker which allows to select images and videos with flexibility. It also supports selection of files by specifying its file type. For using this library, you have to migrate your project to androidx or you can use older version(2.1.5). Check out app module for example.)