StorageManager storageManager = (StorageManager) cxt.getSystemService(Context.STORAGE_SERVICE);
      try {
        Method method = StorageManager.class.getDeclaredMethod("getVolumePaths");
        method.setAccessible(true);
        Object result = method.invoke(storageManager);
        if (result != null && result instanceof String[]) {
          String[] pathes = (String[]) result;
          StatFs statFs;
          for (String path : pathes) {
            if (!TextUtils.isEmpty(path) && new File(path).exists()) {
              statFs = new StatFs(path);
              if (statFs.getBlockCount() * statFs.getBlockSize() != 0) {
                pathsList.add(path);
              }
            }
          }
        }
      } catch (Exception e) {
        e.printStackTrace();
        File externalFolder = Environment.getExternalStorageDirectory();
        if (externalFolder != null) {
          pathsList.add(externalFolder.getAbsolutePath());
        }
      }
    }
    return pathsList.toArray(new String[pathsList.size()]);