Android吧数据保存成xml文件

  1 public class MainActivity extends Activity {
  2 
  3 private List<Person> persons;
  4 @Override
  5 protected void onCreate(Bundle savedInstanceState) 
  6 {
  7 super.onCreate(savedInstanceState);
  8 setContentView(R.layout.main);
  9 //获取资源文件的输入流对象
 10 //InputStream inputstram=this.getClass().getClassLoader().getResourceAsStream("person.xml");
 11 try 
 12 {
 13 persons=new ArrayList<Person>();
 14 File file=new File(Environment.getExternalStorageDirectory().getAbsolutePath(),"a.xml");
 15 Person p=new Person(25, "ggg", "21", "men", "1234562");
 16 persons.add(p);
 17 FileOutputStream stram=new FileOutputStream(file);
 18 savexml(persons,stram);
 19 System.out.println("保存成功");
 20 } 
 21 catch (Exception e) {
 22 e.printStackTrace();
 23 }    
 24 }
 25 
 26 public void savexml(List<Person> person,OutputStream out)
 27 {
 28 /**
 29 * 类似于这样格式的文件
 30 * <?xml version='1.0' encoding='UTF-8' standalone='yes' ?>
 31 <persons>
 32 <person id="25">
 33 <name>ggg</name>
 34 <sex>men</sex>
 35 <age>21</age>
 36 <phone>1234562</phone>
 37 </person>
 38 </persons>
 39 */
 40 try 
 41 {
 42 //xml解析器
 43 XmlSerializer xml=Xml.newSerializer();
 44 //设置xml文件的输出方向
 45 xml.setOutput(out, "UTF-8");
 46 //设置xml的开始文档内容及编码格式
 47 xml.startDocument("UTF-8", true);
 48 //设置xml的开始节点
 49 xml.startTag(null, "persons");
 50 
 52 for(Person p:person)
 53 {
 54 xml.startTag(null, "person");
 55 
 56 String id=String.valueOf(p.getId());
 57 xml.attribute(null, "id",id);
 58 //设置开始name节点
 59 xml.startTag(null, "name");
 60 //设置name的值
 61 xml.text(p.getName());
 62 xml.endTag(null, "name");
 63 //设置name的结束节点
 64 xml.startTag(null, "sex");
 65 xml.text(p.getSex());
 66 xml.endTag(null, "sex");
 67 
 68 xml.startTag(null, "age");
 69 xml.text(p.getAge());
 70 xml.endTag(null, "age");
 71 
 72 xml.startTag(null, "phone");
 73 xml.text(p.getPhone());
 74 xml.endTag(null, "phone");
 75 //结束节点
 76 xml.endTag(null, "person");
 77 }
 78 //xml的结束节点
 79 xml.endTag(null, "persons");
 80 //结束文档
 81 xml.endDocument();
 82 } catch (Exception e) 
 83 {
 84 // TODO Auto-generated catch block
 85 e.printStackTrace();
 86 } 
 87 try
 88 {
 89 out.flush();
 90 out.close();
 91 } 
 92 catch (IOException e) 
 93 {
 94 e.printStackTrace();
 95 }
 96 
 97 }
 98 @Override
 99 public boolean onCreateOptionsMenu(Menu menu) {
100 // Inflate the menu; this adds items to the action bar if it is present.
101 getMenuInflater().inflate(R.menu.main, menu);
102 return true;
103 }
104 
105 }

person类

 1 public class Person 
 2 {
 3 private int id;
 4 private String name;
 5 private String age;
 6 private String sex;
 7 private String phone;
 8 public int getId() {
 9 return id;
10 }
11 public void setId(int id) {
12 this.id = id;
13 }
14 public String getName() {
15 return name;
16 }
17 public void setName(String name) {
18 this.name = name;
19 }
20 public String getAge() {
21 return age;
22 }
23 public void setAge(String age) {
24 this.age = age;
25 }
26 public String getSex() {
27 return sex;
28 }
29 public void setSex(String sex) {
30 this.sex = sex;
31 }
32 public Person(int id, String name, String age, String sex, String phone) {
33 super();
34 this.id = id;
35 this.name = name;
36 this.age = age;
37 this.sex = sex;
38 this.phone = phone;
39 }
40 public String getPhone() {
41 return phone;
42 }
43 public void setPhone(String phone) {
44 this.phone = phone;
45 }
46 public Person(){}
47 }

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>

相关阅读:
如何获取地址栏中的参数
 Ajax基础知识
 什么是BFC
111
不定宽块状元素居中3
POJ 2104主席树
 可持久化数据结构之主席树
 线段树
 Splay 学习
 hello world
原文地址：https://www.cnblogs.com/tianshidechibang234/p/3187076.html