XmlSerializer：成xml文件

try {            File file = new File(getFilesDir(),nameValue+".xml");            OutputStream out = new FileOutputStream(file);            XmlSerializer xmlSerializer = Xml.newSerializer();            xmlSerializer.setOutput(out,"utf-8");            xmlSerializer.startDocument("utf-8",true);            xmlSerializer.startTag(null,"student");            xmlSerializer.startTag(null,"name");            xmlSerializer.text(nameValue);            xmlSerializer.endTag(null,"name");            xmlSerializer.startTag(null,"sex");            xmlSerializer.text(sex);            xmlSerializer.endTag(null,"sex");            xmlSerializer.endTag(null,"student");            xmlSerializer.endDocument();            out.close();     }