android XML解析

public void Userinfo() {
        String str = flag;
        DataCenter d = new DataCenter(con);
        ByteArrayInputStream bInputStringStream = null;
        try {
            if (str != null && !str.trim().equals("")) {
                bInputStringStream = new ByteArrayInputStream(str.getBytes());
            }
        } catch (Exception e) {
            // TODO: handle exception
        }
        try {
            XmlPullParser xmlparser = Xml.newPullParser();

            xmlparser.setInput(bInputStringStream, "UTF-8");
            int eventType = xmlparser.getEventType();
            String[] User_info = new String[21];

            while (eventType != XmlPullParser.END_DOCUMENT) {
                switch (eventType) {
                case XmlPullParser.START_DOCUMENT:// 文档开始事件,可以进行数据初始化处理
                    d.open();
                    break;
                case XmlPullParser.START_TAG:// 开始元素事件
                    String name = xmlparser.getName();// 字段名
                    if (name.equalsIgnoreCase("uid")) {
                        User_info[0] = xmlparser.nextText();
                    } else if (name.equalsIgnoreCase("psw")) {
                        User_info[1] = xmlparser.nextText();

                    } else if (name.equalsIgnoreCase("name")) {
                        User_info[2] = xmlparser.nextText();

                    } else if (name.equalsIgnoreCase("major")) {
                        User_info[3] = xmlparser.nextText();

                    } else if (name.equalsIgnoreCase("department")) {
                        User_info[4] = xmlparser.nextText();

                    } else if (name.equalsIgnoreCase("email")) {
                        User_info[5] = xmlparser.nextText();

                    } else if (name.equalsIgnoreCase("unit")) {
                        User_info[6] = xmlparser.nextText();

                    } else if (name.equalsIgnoreCase("tel")) {
                        User_info[7] = xmlparser.nextText();

                    } else if (name.equalsIgnoreCase("mobile")) {
                        User_info[8] = xmlparser.nextText();

                    } else if (name.equalsIgnoreCase("postcode")) {
                        User_info[9] = xmlparser.nextText();

                    } else if (name.equalsIgnoreCase("address")) {
                        User_info[10] = xmlparser.nextText();

                    } else if (name.equalsIgnoreCase("homepage")) {
                        User_info[11] = xmlparser.nextText();

                    } else if (name.equalsIgnoreCase("regTime")) {
                        User_info[12] = xmlparser.nextText();

                    } else if (name.equalsIgnoreCase("lastTime")) {
                        User_info[13] = xmlparser.nextText();

                    } else if (name.equalsIgnoreCase("priv")) {
                        User_info[14] = xmlparser.nextText();

                    } else if (name.equalsIgnoreCase("bxlx")) {
                        User_info[15] = xmlparser.nextText();

                    } else if (name.equalsIgnoreCase("xxtz")) {
                        User_info[16] = xmlparser.nextText();

                    } else if (name.equalsIgnoreCase("orderId")) {
                        User_info[17] = xmlparser.nextText();

                    } else if (name.equalsIgnoreCase("deviceTotal")) {
                        User_info[18] = xmlparser.nextText();

                    } else if (name.equalsIgnoreCase("deviceArea")) {
                        User_info[19] = xmlparser.nextText();

                    } else if (name.equalsIgnoreCase("cjType")) {
                        User_info[20] = xmlparser.nextText();
                    }
                    break;
                case XmlPullParser.END_TAG:// 结束元素事件

                    break;
                }
                eventType = xmlparser.next();
            }
            d.insertUser(User_info);
            bInputStringStream.close();
            d.close();
        } catch (XmlPullParserException e) {
            // TODO Auto-generated catch block
            flag = null;
            e.printStackTrace();

        } catch (IOException e) {
            // TODO Auto-generated catch block
            flag = null;
            e.printStackTrace();
        }
        flag = null;
    }