Android: Usb storage location in 3.0?

My app provides a file browser. I set the root of the file browser to: Environment.getExternalStorageDirectory(); which, on my Acer Iconia Tab, returns "/mnt/sdcard". However, many 3.0 devices support usb storage. Is there a safe/proper way to get the path to "/mnt"? (to the directory that con开发者_JAVA技巧tains the sdcard and usb storage)

If Environment.getExternalStorageDirectory(); gives /mnt/sdcard/, i was hoping there would be a safe method to get /mnt/usb_storage. There does not appear to be. However, Environment.getExternalStorageDirectory().getParentFile() appears to reliable give the parent directory of /mnt/usb_storage.

If you are talking about devices like the Motorola Xoom that do not have sdcard support then it is safe to use Environment.getExternalStorageDirectory(). The Xoom actually has the sdcard folder structure on the internal storage.