安卓开发之利用XmlSerializer生成XML文件

 package com.lidaochen.phonecall;
 
 import android.net.Uri;
 import android.os.Environment;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
 import android.util.Log;
 import android.util.Xml;
 import android.view.View;
 import android.widget.Button;
 import android.widget.TabHost;
 import android.widget.ThemedSpinnerAdapter;
 import android.widget.Toast;
 
 import org.xmlpull.v1.XmlSerializer;
 
 import java.io.File;
 import java.io.FileOutputStream;
 import java.util.ArrayList;
 import java.util.List;
 
 public class MainActivity extends AppCompatActivity{
     private List<Sms> smsLists;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
         // 初始化我们要备份的数据
         smsLists = new ArrayList<Sms>();
         for (int i = 0; i < 10; i++)
         {
             Sms sms = new Sms();
             sms.setAddres("10000" + i);
             sms.setBody("Hello" + i);
             sms.setDate("500" + i);
             // 把sms对象加入到集合中
             smsLists.add(sms);
         }
     }
     // 按钮点击事件
     public void click(View v)
     {
         try{
             // 1、通过Xml这个工具类去获取XmlSerializer类的实例
             XmlSerializer serializer = Xml.newSerializer();
             // 2、设置XmlSerializer序列化器参数
             File file = new File(Environment.getExternalStorageDirectory().getPath(), "LiDaochen.xml");
             FileOutputStream fos = new FileOutputStream(file);
             serializer.setOutput(fos, "utf-8");
             // 3、写xml文档开头
             serializer.startDocument("utf-8", true);
             // 4、写xml根节点
             serializer.startTag(null, "smss");
             for(Sms sms:smsLists)
             {
                 serializer.startTag(null, "sms");
                 // address节点
                 serializer.startTag(null, "addres");
                 serializer.text(sms.getAddres());
                 serializer.endTag(null, "addres");
                 // body节点
                 serializer.startTag(null, "body");
                 serializer.text(sms.getBody());
                 serializer.endTag(null, "body");
                 // date节点
                 serializer.startTag(null, "date");
                 serializer.text(sms.getDate());
                 serializer.endTag(null, "date");
                 serializer.endTag(null, "sms");
             }
             // 文档结尾
             serializer.endTag(null, "smss");
             serializer.endDocument();
             // 关闭流
             fos.close();
         }
         catch (Exception e)
         {
             e.printStackTrace();
         }
     }
 }

 package com.lidaochen.phonecall;
 
 public class Sms {
     private String addres;
     private String body;
     private String date;
 
     public String getAddres() {
         return addres;
     }
 
     public String getBody() {
         return body;
     }
 
     public String getDate() {
         return date;
     }
 
     public void setAddres(String addres) {
         this.addres = addres;
     }
 
     public void setBody(String body) {
         this.body = body;
     }
 
     public void setDate(String date) {
         this.date = date;
     }
 }