Question

We have a usb port in our android tablet(version 4.0.3).

1. How do we find out any PenDrive connected on that port or not.
2. How do we access the files in the USB Pendrive which connected on that port through programmatically in android.

We have a /mnt contained Folder as

asec
extsd
obb
sdcard
secure
usbhost1

1. How to programmatically identify which one is Internal Memory Path, External SD Card Path and USB Path.

2. What is the purpose for used this folder asec, obb and secure.

Thanks in advance.

Regards
Bala

Answer 1

I guess to use the external sdcard you need to use this:

new File("/mnt/external_sd/")

OR

new File("/mnt/extSdCard/")

OR

new File("/mnt/usb_storage")

in replace of Environment.getExternalStorageDirectory()

Works for me. You should check whats in the directory mnt first and work from there..

You should use some type of selection method to choose which sdcard to use:

File storageDir = new File("/mnt/");
if(storageDir.isDirectory()){
    String[] dirList = storageDir.list();
    //TODO some type of selecton method?
}

The “pen drive” is located in /mnt/ (just like all other storage devices in 4.0>)

It will probably be different for some devices, for the Acer Iconia A500 running 4.0.3 usb storage is under /mnt/usb_storage/