xml解析和序列化

来源：互联网发布：淘宝助理怎么添加水印编辑：程序博客网时间：2024/05/29 16:33
1.读写SD卡，加权限
序列化---写
public class TestCase extends AndroidTestCase {public void test() {//writeXmlToLocal();List<Person> personList = parserXmlFromLocal();for (Person person : personList) {Log.i("TestCase", person.toString());}}/** * 写xml文件到本地 */private void writeXmlToLocal() {List<Person> personList = getPersonList();  //得到数据// 获得序列化对象XmlSerializer serializer = Xml.newSerializer();try {                        //SD卡下//persons.xmlFile path = new File(Environment.getExternalStorageDirectory(), "persons.xml");FileOutputStream fos = new FileOutputStream(path);// 指定序列化对象输出的位置和编码serializer.setOutput(fos, "utf-8");serializer.startDocument("utf-8", true);// 写开始 <?xml version='1.0' encoding='utf-8' standalone='yes' ?>serializer.startTag(null, "persons");// 开始节点<persons>for (Person person : personList) {// 开始写人serializer.startTag(null, "person");// <person>serializer.attribute(null, "id", String.valueOf(person.getId()));//写节点属性// 写名字serializer.startTag(null, "name");// <name>serializer.text(person.getName());serializer.endTag(null, "name");// </name>// 写年龄serializer.startTag(null, "age");// <age>serializer.text(String.valueOf(person.getAge()));serializer.endTag(null, "age");// </age>serializer.endTag(null, "person");// </person>}serializer.endTag(null, "persons");// 结束节点</persons>serializer.endDocument();// serializer.startDocument("utf-8", true)的结束} catch (Exception e) {e.printStackTrace();}}//返回数据private List<Person> getPersonList() {                           List<Person> personList = new ArrayList<Person>();for (int i = 0; i < 30; i++) {personList.add(new Person(i, "wang" + i, 18 + i));}return personList;}
解析--读
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