读写xml文件

package com.example.xmldemo.domain;

public class Person {
private int id;
private String name;
private String password;

public int getId() {
return id;
}

public void setId(int id) {
this.id = id;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public String getPassword() {
return password;
}

public void setPassword(String password) {
this.password = password;
}

public Person(int id, String name, String password) {
super();
this.id = id;
this.name = name;
this.password = password;
}

public Person(String name, String password) {
super();
this.name = name;
this.password = password;
}

public Person() {
}
}

private List<Person> xmlToObjList() {
XmlPullParser parser = Xml.newPullParser();
InputStream is = null;
List<Person> xmlDatas = new ArrayList<Person>();
try {
is = getAssets().open("person.xml");
// 关联要解析的xml文档
parser.setInput(is, "utf-8");
Person person = null;
int event = parser.getEventType();
// 不等于文档结束事件循环
while (event != XmlPullParser.END_DOCUMENT) {
if (XmlPullParser.START_TAG == event) {
// person标签开始
if ("person".equals(parser.getName())) {
person = new Person();
int pid = Integer.parseInt(parser.getAttributeValue(0));
person.setId(pid);
}
// name标签开始
if ("name".equals(parser.getName())) {
String name = parser.nextText();
person.setName(name);

}
if ("password".equals(parser.getName())) {
String password = parser.nextText();
person.setPassword(password);
}
}
if (XmlPullParser.END_TAG == event) {
// person标签结束
if ("person".equals(parser.getName())) {

xmlDatas.add(person);
}
}
event = parser.next();
}

// 验证：
for (Person p : xmlDatas) {
Log.i("XML", p.getName() + p.getPassword());
}

} catch (IOException e) {
e.printStackTrace();
} catch (XmlPullParserException e) {
e.printStackTrace();
} finally {
if (is != null) {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return xmlDatas;
}

private void objToXml(List<Person> xmlDatas) {
XmlSerializer serializer = Xml.newSerializer();
OutputStream os = null;
try {
// 保存位置
os = openFileOutput("person.xml", MODE_PRIVATE);
serializer.setOutput(os, "utf-8");
// 生成xml文件
serializer.startDocument("utf-8", false);
// 开始标签：<persons>
serializer.startTag(null, "persons");
for (Person person : xmlDatas) {
// <person>
serializer.startTag(null, "person");
// 生成id属性
serializer.attribute(null, "id", String.valueOf(person.getId()));
// <name>标签
serializer.startTag(null, "name");
// 内容
serializer.text(person.getName());
// </name>标签
serializer.endTag(null, "name");

serializer.startTag(null, "password");
serializer.text(person.getPassword());
serializer.endTag(null, "password");

serializer.endTag(null, "person");
}
serializer.endTag(null, "persons");
// 结束
serializer.endDocument();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (os != null) {
try {
os.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
Toast.makeText(this, "success", Toast.LENGTH_SHORT).show();
}