


Code details for generating and parsing data in Xml format
1. Generation and analysis of Xml format data
Using xml as the carrier of data interaction is a very important function in Android. For example, weather forecast data, SMS backup data, and address record data can all be expressed in xml# The format of
## is transmitted through the network. The XML format is written and displayed in the form of sticky notes, which is clear at a glance and easy to read and identify, as shown below:<xml 头> <student> <name>张三</name> <number>110001</number> <sex>male</sex> </student>
//数据保存到文件 sb.append("<?xml version=\"1.0\" encoding=\"utf-8\"?>"); sb.append("<student>"); sb.append("<name>"); sb.append(name); sb.append("</name>"); sb.append("<number>"); sb.append(number); sb.append("</number>"); sb.append("<sex>"); sb.append(sex); sb.append("</sex>"); sb.append("</student>");
try {// 采用Android的api面向对象的生成xml文件. // 1.得到xml文件的序列化器 XmlSerializer serializer = Xml.newSerializer(); // 2.指定序列化器的一些初始参数 File file = new File(getFilesDir(), name +".xml"); FileOutputStream os = new FileOutputStream(file);serializer.setOutput(os, "utf-8"); // 3.写xml文件. serializer.startDocument("utf-8", true);//写开头serializer.startTag(null, "student");//开始标签 serializer.startTag(null,"name"); serializer.text(name);//文本标签 serializer.endTag(null,"name");//结束标签 serializer.startTag(null,"number"); serializer.text(number); serializer.endTag(null,"number"); serializer.startTag(null,"sex"); serializer.text(sex); serializer.endTag(null,"sex"); serializer.endTag(null,"student"); serializer.endDocument();//写结尾 os.close(); Toast.makeText(this,"保存数据成功", 0).show(); } catch (Exception e) {e.printStackTrace(); Toast.makeText(this,"保存数据失败", 0).show(); }
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