Android - XML序列化

浏览数：12 / 时间：2015年06月11日

1、xml文件的序列化：采用XmlSerializer来实现XML文件的序列化。相比传统方式，更高效安全

MainActivity.java

 1 package com.example.test_buildxmlfile;
 2 
 3 import java.io.File;
 4 import java.io.FileOutputStream;
 5 import java.util.ArrayList;
 6 import java.util.List;
 7 import java.util.Random;
 8 
 9 import org.xmlpull.v1.XmlSerializer;
10 
11 import android.app.Activity;
12 import android.os.Bundle;
13 import android.os.Environment;
14 import android.util.Log;
15 import android.util.Xml;
16 import android.view.View;
17 import android.widget.Toast;
18 
19 import com.example.test_getxmlfile.R;
20 import com.test.MsgInfo.MsgInfo;
21 
22 /**
23  * @author daomul
24  *  主入口:xml文件的序列化
25  */
26 public class MainActivity extends Activity {
27 
28     private List<MsgInfo> msgList;
29     @Override
30     protected void onCreate(Bundle savedInstanceState) {
31         super.onCreate(savedInstanceState);
32         setContentView(R.layout.activity_main);
33         
34         msgList = new ArrayList<MsgInfo>();
35         Random random= new Random(); //随机的 （1：发送      2 ：接收）
36         long number = 1340000001;    //手机地址
37         
38         //连续生成10条默认短信
39         for (int i = 0; i < 10; i++) {
40             msgList.add(new MsgInfo(System.currentTimeMillis(), random.nextInt(2), 
41                     "text MSg"+i,Long.toString(number+i),i ));
42         }
43     }
44  
45     /**
46      * 短信信息备份
47      * @param view 点击事件触发
48      */
49     public void MsgSave(View view){
50         
51         try {
52             //XML序列化
53             XmlSerializer serializer= Xml.newSerializer();
54 
55             File file=new File(Environment.getExternalStorageDirectory(),"test.xml");
56             FileOutputStream os= new FileOutputStream(file);
57             
58             serializer.setOutput(os, "utf-8");//os 是导出的文件位置  encoding 指代utf-8
59             serializer.startDocument("utf-8", true);
60 
61             serializer.startTag(null, "msgs");
62             for (MsgInfo msg:msgList) {
63                 serializer.startTag(null, "msg");
64                 serializer.attribute(null, "msg", msg.getId()+"");//添加ID属性
65                 
66                 serializer.startTag(null, "body");
67                 serializer.text(msg.getBody());
68                 serializer.endTag(null, "body");
69 
70                 serializer.startTag(null, "address");
71                 serializer.text(msg.getAddress());
72                 serializer.endTag(null, "address");
73 
74                 serializer.startTag(null, "type");
75                 serializer.text(msg.getType()+"");
76                 serializer.endTag(null, "type");
77                 
78                 serializer.startTag(null, "date");
79                 serializer.text(msg.getDate()+"");
80                 serializer.endTag(null, "date");
81                 
82                 serializer.endTag(null, "msg");
83             }
84             serializer.endTag(null, "msgs");
85             
86             serializer.endDocument();
87             
88             os.close();
89             Toast.makeText(this, "XML序列化成功", 0).show();
90             
91         } catch (Exception e) {
92             // TODO Auto-generated catch block
93             e.printStackTrace();
94             Toast.makeText(this, "XML序列化失败", 0).show();
95         } 
96     }
97 }

MsgInfo.java

 1 package com.test.MsgInfo;
 2 
 3 /**
 4  * @author daomul
 5  * 短信信息
 6  */
 7 
 8 public class MsgInfo {
 9     
10     private long date;
11     private int type;
12     private String body;
13     private String address;
14     private int id;
15     
16     //无参构造方法
17     public MsgInfo() {
18         
19     }
20     
21     //有参构造方法 Generate Constructor use fields...
22     public MsgInfo(long date, int type, String body, String address,int id) {
23         super();
24         this.date = date;
25         this.type = type;
26         this.body = body;
27         this.address = address;
28         this.id = id;
29     }
30 
31     //setter and getter
32     public int getId() {
33         return id;
34     }
35 
36     public void setId(int id) {
37         this.id = id;
38     }
39 
40     public long getDate() {
41         return date;
42     }
43     public void setDate(long date) {
44         this.date = date;
45     }
46     public int getType() {
47         return type;
48     }
49     public void setType(int type) {
50         this.type = type;
51     }
52     public String getBody() {
53         return body;
54     }
55     public void setBody(String body) {
56         this.body = body;
57     }
58     public String getAddress() {
59         return address;
60     }
61     public void setAddress(String address) {
62         this.address = address;
63     }
64     
65     
66 
67 }