code: public String transBinaryXml(String path) throws IOException {
          byte[] data = getFileData(path);
          if (data == null) {
              return null;
          }
          parseResourceTable();
  
          XmlTranslator xmlTranslator = new XmlTranslator();
          transBinaryXml(data, xmlTranslator);
          return xmlTranslator.getXml();
      }
docs: trans binary xml file to text xml file.
  
  @param path the xml file path in apk file
  @return the text. null if file not exists
  @throws IOException