List / download from other users' public folders in iOS?

Dropbox API v2 does have endpoints for getting shared link metadata and files, but unfortunately they don't currently offer the file listing for links that point to folders. So, if you knew the names of the files you want to download in the folder, that would work, but you can't list the names using that.

The v1 version of the endpoint does offer that though:

https://www.dropbox.com/developers-v1/core/docs#metadata-link

API v1 is the older version of the Dropbox API. API v2 is recommended, but API v1 is still usable.

For reference, the iOS Core SDK uses API v1, and SwiftyDropbox uses API v2. The iOS Core SDK unfortunately doesn't implement the API v1 /metadata/link endpoint, but you can implement it separately if you want.

Dropbox API v2 now supports listing the contents of a shared link for a folder. This can be accomplished using the same interface as listing a folder in a connected user's account, via the list_folder functionality. To list the contents of a shared link for a folder, you instead provide the shared link URL in the `shared_link` parameter to list_folder:

https://www.dropbox.com/developers/documentation/http/documentation#files-list_folder

If you're using an official SDK, there will also be a corresponding method for this endpoint:


In the .NET SDK that's available as `ListFolderAsync`:

https://dropbox.github.io/dropbox-sdk-dotnet/html/M_Dropbox_Api_Files_Routes_FilesUserRoutes_ListFolderAsync_1.htm


In the Java SDK that's available via `listFolderBuilder` to get a `ListFolderBuilder` on which you can call `ListFolderBuilder.withSharedLink`:

https://dropbox.github.io/dropbox-sdk-java/api-docs/v3.0.x/com/dropbox/core/v2/files/DbxUserFilesRequests.html#listFolderBuilder-java.lang.String-

https://dropbox.github.io/dropbox-sdk-java/api-docs/v3.0.x/com/dropbox/core/v2/files/ListFolderBuilder.html

https://dropbox.github.io/dropbox-sdk-java/api-docs/v3.0.x/com/dropbox/core/v2/files/ListFolderBuilder.html#withSharedLink-com.dropbox.core.v2.files.SharedLink-


In the JavaScript SDK that's available as `filesListFolder`:

https://dropbox.github.io/dropbox-sdk-js/Dropbox.html#filesListFolder__anchor


In the Python SDK that's available as `files_list_folder`:

https://dropbox-sdk-python.readthedocs.io/en/latest/moduledoc.html#dropbox.dropbox.Dropbox.files_list_folder


In the Swift SDK that's available as `listFolder`:

https://dropbox.github.io/SwiftyDropbox/api-docs/latest/Classes/FilesRoutes.html#/s:13SwiftyDropbox11FilesRoutesC10listFolderAA10RpcRequestCyAA0C0C04ListF16ResultSerializerCAH0if5ErrorK0CGSS4path_Sb9recursiveSb16includeMediaInfoSb0O7DeletedSb0O24HasExplicitSharedMembersSb0O14MountedFolderss6UInt32VSg5limittF


In the Objective-C SDK that's available as `listFolder`:

https://dropbox.github.io/dropbox-sdk-obj-c/api-docs/latest/Classes/DBFILESUserAuthRoutes.html#/c:objc(cs)DBFILESUserAuthRoutes(im)listFolder: