private void getFiles(ArrayList<File> fileList, String path) {

        File[] allFiles = new File(path).listFiles();

        for (int i = 0; i < allFiles.length; i++) {

            File file = allFiles[i];

            if (file.isFile()) {

                    fileList.add(file);

            } else  {

                getFiles(fileList, file.getAbsolutePath());

            }

        }

    }