Android吧数据保存成xml文件

 public class MainActivity extends Activity {

 private List<Person> persons;
 @Override
 protected void onCreate(Bundle savedInstanceState)
 {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.main);
 //获取资源文件的输入流对象
 //InputStream inputstram=this.getClass().getClassLoader().getResourceAsStream("person.xml");
 try
 {
 persons=new ArrayList<Person>();
 File file=new File(Environment.getExternalStorageDirectory().getAbsolutePath(),"a.xml");
 Person p=new Person(25, "ggg", "21", "men", "1234562");
 persons.add(p);
 FileOutputStream stram=new FileOutputStream(file);
 savexml(persons,stram);
 System.out.println("保存成功");
 }
 catch (Exception e) {
 e.printStackTrace();
 }
 }

 public void savexml(List<Person> person,OutputStream out)
 {
 /**
 * 类似于这样格式的文件
 * <?xml version='1.0' encoding='UTF-8' standalone='yes' ?>
 <persons>
 <person id="25">
 <name>ggg</name>
 <sex>men</sex>
 <age>21</age>
 <phone>1234562</phone>
 </person>
 </persons>
 */
 try
 {
 //xml解析器
 XmlSerializer xml=Xml.newSerializer();
 //设置xml文件的输出方向
 xml.setOutput(out, "UTF-8");
 //设置xml的开始文档内容及编码格式
 xml.startDocument("UTF-8", true);
 //设置xml的开始节点
 xml.startTag(null, "persons");

 for(Person p:person)
 {
 xml.startTag(null, "person");

 String id=String.valueOf(p.getId());
 xml.attribute(null, "id",id);
 //设置开始name节点
 xml.startTag(null, "name");
 //设置name的值
 xml.text(p.getName());
 xml.endTag(null, "name");
 //设置name的结束节点
 xml.startTag(null, "sex");
 xml.text(p.getSex());
 xml.endTag(null, "sex");

 xml.startTag(null, "age");
 xml.text(p.getAge());
 xml.endTag(null, "age");

 xml.startTag(null, "phone");
 xml.text(p.getPhone());
 xml.endTag(null, "phone");
 //结束节点
 xml.endTag(null, "person");
 }
 //xml的结束节点
 xml.endTag(null, "persons");
 //结束文档
 xml.endDocument();
 } catch (Exception e)
 {
 // TODO Auto-generated catch block
 e.printStackTrace();
 }
 try
 {
 out.flush();
 out.close();
 }
 catch (IOException e)
 {
 e.printStackTrace();
 }

 }
 @Override
 public boolean onCreateOptionsMenu(Menu menu) {
 // Inflate the menu; this adds items to the action bar if it is present.
 getMenuInflater().inflate(R.menu.main, menu);
 return true;
 }

 }

person类

 public class Person
 {
 private int id;
 private String name;
 private String age;
 private String sex;
 private String phone;
 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 getAge() {
 return age;
 }
 public void setAge(String age) {
 this.age = age;
 }
 public String getSex() {
 return sex;
 }
 public void setSex(String sex) {
 this.sex = sex;
 }
 public Person(int id, String name, String age, String sex, String phone) {
 super();
 this.id = id;
 this.name = name;
 this.age = age;
 this.sex = sex;
 this.phone = phone;
 }
 public String getPhone() {
 return phone;
 }
 public void setPhone(String phone) {
 this.phone = phone;
 }
 public Person(){}
 }

保存的内容结果是：

<?xml version='1.0' encoding='UTF-8' standalone='yes' ?>
<persons>
　　<person id="25">
　　　　<name>ggg</name>
　　　　<sex>men</sex>
　　　　<age>21</age>
　　　　<phone>1234562</phone>
　　</person>
</persons>