You can access your My Docs Online account on Android devices (phones and tablets), for opening and viewing files in locally-installed apps such as Documents To Go or various PDF viewers, by using a WebDAV app.
Here is how to configure WebDAV File Manager:
Configuration steps for Add Server:
Name: My Docs Online
Server URL: https://webfolders.mydocsonline.com
User ID and Password: Your My Docs Online Login ID and password
Once logged in simply navigate to a folder and tap a file to download and open (you have to have an app that can handle the files types you use).
WebDAV File Manager (available free at the App Store)
WebDAV Navigator (not free) also works with My Docs Online