Android生成xml

XmlSerializer

    //使用XmlSerializer来序列化xml文件

    public static boolean backupSms_android(Context context){

        

        try{

            

            //0.获取短信数据

            ArrayList<SmsBean> allSms = SmsDao.getAllSms();

            //1.通过Xml获取一个XmlSerializer对象

            XmlSerializer xs = Xml.newSerializer();

            //2.设置XmlSerializer的一些参数，比如：设置xml写入到哪个文件中

            //os:xml文件写入流   encoding：流的编码

            xs.setOutput(context.openFileOutput("backupsms2.xml", Context.MODE_PRIVATE), "utf-8");

            //3.序列化一个xml的声明头

            //encoding:xml文件的编码  standalone:是否独立

            xs.startDocument("utf-8", true);

            //4.序列化一个根节点的开始节点

            //namespace:命名空间  name： 标签的名称

            xs.startTag(null, "Smss");

            //5.循环遍历list集合序列化一条条短信

            

                for (SmsBean smsBean : allSms) {

                    xs.startTag(null, "Sms");

                    //name:属性的名称  value：属性值

                    xs.attribute(null, "id", smsBean.id+"");

                    

                    xs.startTag(null, "num");

                    //写一个标签的内容

                    xs.text(smsBean.num);

                    xs.endTag(null, "num");

                    

                    

                    xs.startTag(null, "msg");

                    xs.text(smsBean.msg);

                    xs.endTag(null, "msg");

                    

                    

                    xs.startTag(null, "date");

                    xs.text(smsBean.date);

                    xs.endTag(null, "date");

                    

                    xs.endTag(null, "Sms");

                }



            //6.序列化一个根节点的结束节点

                xs.endTag(null, "Smss");

            //7.将xml写入到文件中，完成xml的序列化

                xs.endDocument();

                return true;



        }catch (Exception e) {

            e.printStackTrace();

        }

        return false;

    }