android xml解析－Pull解析

解析一下的xml为例：

<?xml version="1.0" encoding="UTF-8"?><persons><person id="23"><name>daidai</name><age>20</age></person><person id="20"><name>wxxu</name><age>25</age></person></persons>

1.调用解析方法

public void testPersons() throws Exception{InputStream xml = this.getClass().getClassLoader().getResourceAsStream("person.xml");List<Person> persons = PersonService.getPersons(xml);for(Person person : persons){Log.i(TAG, person.toString());}}

2.PersonService中的getPersons(xml)方法

public static List<Person> getPersons(InputStream xml) throws Exception{List<Person> persons = null;Person person = null;XmlPullParser pullParser = Xml.newPullParser();pullParser.setInput(xml, "UTF-8");int event = pullParser.getEventType();while(event != XmlPullParser.END_DOCUMENT){switch (event) {case XmlPullParser.START_DOCUMENT:persons = new ArrayList<Person>();break;case XmlPullParser.START_TAG:if("person".equals(pullParser.getName())){int id = new Integer(pullParser.getAttributeValue(0));person = new Person();person.setId(id);}if("name".equals(pullParser.getName())){String name = pullParser.nextText();person.setName(name);}if("age".equals(pullParser.getName())){int age = new Integer(pullParser.nextText());person.setAge(age);}break;case XmlPullParser.END_TAG:if("person".equals(pullParser.getName())){persons.add(person);person = null;}break;}event = pullParser.next();}return persons;}

3.生成xml方法的调用

public void testSave() throws Exception{List<Person> persons = new ArrayList<Person>();persons.add(new Person(43, "zhangxx", 80));persons.add(new Person(12, "lili", 20));persons.add(new Person(78, "xiaoxiao", 8));File xmlFile = new File(getContext().getFilesDir(), "itcast.xml");FileOutputStream outStream = new FileOutputStream(xmlFile);PersonService.save(persons, outStream);}

4.PersonService中的save保存成xml方法

public static void save(List<Person> persons, OutputStream out) throws Exception{XmlSerializer serializer = Xml.newSerializer();serializer.setOutput(out, "UTF-8");serializer.startDocument("UTF-8", true);serializer.startTag(null, "persons");for(Person person : persons){serializer.startTag(null, "person");serializer.attribute(null, "id", person.getId().toString());serializer.startTag(null, "name");serializer.text(person.getName());serializer.endTag(null, "name");serializer.startTag(null, "age");serializer.text(person.getAge().toString());serializer.endTag(null, "age");serializer.endTag(null, "person");}serializer.endTag(null, "persons");serializer.endDocument();out.flush();out.close();}