External SD card & Internal flasher media in ICs

Two methods:

1. Indicate external SD Card Based on Internal flasher media (NAND or SD/MMC)

Http://stackoverflow.com/questions/6156649/is-there-a-documented-way-in-android-2-x-to-inspect-multiple-sd-cards-for-cont? Answertab = active # tab-top

2. Update Android SDK, exist/sdcard,/external_sd and/udisk

 
Environment. getexternalsdstoragedirectory () environment. getexternaludiskstoragedirectory () environment. Environment () environment. getexternalsdstoragestate () environment. Environment () environment. Environment ()
 

To access media throughMediaprovider, The Android Application shocould use the URL content://Media/external_sd, content: // media/external_udisk, and content: // media/external_extsd for
Specific media files in/Sdcard,/Udisk, And/Exts, Respectively.

Http://reviews.androids.name/2011/03/i-mx-android-firmware-developers-manual-very-good/