Get access to USB mass storage device in android

In this example I am using the FileUtils from Apache, but event without it you will see the logic used to read a USB Flash drive:

private UsbManager usbManager;private UsbDevice clef;ArrayList<File> images;usbManager = (UsbManager) getSystemService(Context.USB_SERVICE);clef = null;if (usbManager != null){    HashMap<String,UsbDevice> deviceList = usbManager.getDeviceList();    if (deviceList != null)    {        Iterator<UsbDevice> deviceIterator = deviceList.values().iterator();        while (deviceIterator.hasNext()) {            clef = deviceIterator.next();        }    }}if (clef != null){    File directory  = new File("/storage/UsbDriveA/");    if (directory != null) {        if (directory.canRead()) {            images = new ArrayList<File>();            String[] imageExtensions = {"jpg","jpeg","png","gif","JPG","JPEG","PNG","GIF"};            Iterator<File> iterateImages = FileUtils.iterateFiles(directory, imageExtensions, true);            while (iterateImages.hasNext()) {                File theImage = iterateImages.next();                if (!theImage.getName().startsWith(".", 0))                    images.add(theImage);            }            // custom process / methods... not very relevant here :             imageIndex = 0;            scale = 1.0f;            countImgs = images.size();            loadImage(imageIndex);        }    }}

In my manifest I have those lines, although I'm not sure they're all mandatory...

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /><uses-feature android:name="android.hardware.usb.host" /><uses-permission android:name="android.permission.USB_PERMISSION" /><uses-permission android:name="android.permission.WRITE_SETTINGS" />

I can't test this, not having such a cable myself, but my assumption would be that you can pass your filepath directly into the constructor which would look like:

File directory  = new File("/storage/UsbDriveA/");

Have you tried this?