Android Foolproof SD card path

sdcard.java

    public static String getSdCardPath()
    {
        if (sdCardPath == null)
        {
            ArrayList<String> list = new ArrayList<String>();

            String[] dirs = com.rhythminteractive.Util.FileUtil.getStorageDirectories();
            for (String dir : dirs)
            {
                Timber.d("SDCard", "trying path '%s'", dir);
                try
                {
                    File folderName = new File(dir);
                    folderName.mkdirs();

                    Timber.d("SDCard", "path good '%s'", dir);
                    list.add(dir);
                }
                catch (Exception ex)
                {
                }
            }

            File fileList[] = new File("/storage/").listFiles();
            for (File file : fileList)
            {
                if (!file.getAbsolutePath().equalsIgnoreCase(Environment.getExternalStorageDirectory().getAbsolutePath()) && file.isDirectory() && file.canRead())
                {
                    String dir = file.getAbsolutePath();
                    Timber.d("SDCard", "trying path '%s'", dir);
                    try
                    {
                        File folderName = new File(dir);
                        folderName.mkdirs();

                        Timber.d("SDCard", "path good '%s'", dir);
                        list.add(dir);
                    }
                    catch (Exception ex)
                    {
                    }
                }
            }

            // now we have a list with all possible candidates
            // the real SDCard will have the DYNAMIC_ASSET_IMAGE_DASHBOARD_FILENAME file
            for (String dir : list)
            {
                Timber.d("SDCard", "validating path '%s'", dir);

                File dashBoardLogo = new File(dir, Constants.DYNAMIC_ASSET_IMAGE_DASHBOARD_FILENAME + ".png");
                if (dashBoardLogo.exists())
                {
                    Timber.d("SDCard", "found logo on '%s'", dir);
                    sdCardPath = dir;
                    break;
                }
            }

            if (sdCardPath == null)
            {
                // usually on emulators, above code does not work, hard code value that does here
                sdCardPath = "/mnt/sdcard";
            }
            Timber.d("SDCard", "SDCard path is '%s'", sdCardPath);
        }

        return sdCardPath;
    }

There is one caveat here:

my app's sd card will always have one file, that I check above.