public class UDiskUtil {
    public final static String searchPath() {
        String filePath = "/proc/mounts";
        File file = new File(filePath);
        List<String> lineList = new ArrayList<>();
        InputStream inputStream =null;
        try {
            inputStream = new FileInputStream(file);
            if (inputStream != null) {
                InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "GBK");
                BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
                String line = "";
                while ((line = bufferedReader.readLine()) != null) {
//                    Log.e("TAG",line);
                    if (line.contains("vfat")) {
                        lineList.add(line);
                    }
                }
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (inputStream != null) {
                try {
                    inputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        String editPath = lineList.get(lineList.size() - 1);
        int start = editPath.indexOf("/mnt");
        int end = editPath.indexOf(" vfat");
        String path = editPath.substring(start, end);
        Log.d("TAG_SelectBusLineDialog", "path: " + path);
        return path;
    }
}