code: public static JSONObject loadExternalJSONFile(Context context, final String directory,
                                                    final String file) {
          final File dir = context.getExternalFilesDir(directory);
          return loadJSONFile(dir, file);
      }
docs: Load a JSON file from a private application directory as defined by {@link Environment}.
  
  @param directory One of the {@code DIRECTORY_*} constants defined by {@code Environment}.
  @param file      Relative path to file in the public directory.
  @return New instance of {@link JSONObject}