Android: Usb storage location in 3.0? -

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my app provides file browser. set root of file browser to: environment.getexternalstoragedirectory(); which, on acer iconia tab, returns "/mnt/sdcard". however, many 3.0 devices support usb storage. there safe/proper way path "/mnt"? (to directory contains sdcard , usb storage)

if environment.getexternalstoragedirectory(); gives /mnt/sdcard/, hoping there safe method /mnt/usb_storage. there not appear be. however, environment.getexternalstoragedirectory().getparentfile() appears reliable give parent directory of /mnt/usb_storage.


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