xml操作

来源：互联网发布：慈溪行知职高老师编辑：程序博客网时间：2024/06/05 08:24

pull解析代码

public class MainActivity extends Activity {

   List<City> cityList;
   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main);
   }

   public void click(View v){

       InputStream is = getClassLoader().getResourceAsStream("weather.xml");


       XmlPullParser xp = Xml.newPullParser();

       try {
           xp.setInput(is, "gbk");


           int type = xp.getEventType();
           City city = null;
           while(type != XmlPullParser.END_DOCUMENT){

               switch (type) {
               case XmlPullParser.START_TAG:

                   if("weather".equals(xp.getName())){

                       cityList = new ArrayList<City>();
                   }
                   else if("city".equals(xp.getName())){

                       city = new City();
                   }
                   else if("name".equals(xp.getName())){

                       String name = xp.nextText();
                       city.setName(name);
                   }
                   else if("temp".equals(xp.getName())){

                       String temp = xp.nextText();
                       city.setTemp(temp);
                   }
                   else if("pm".equals(xp.getName())){

                       String pm = xp.nextText();
                       city.setPm(pm);
                   }
                   break;
               case XmlPullParser.END_TAG:
                   if("city".equals(xp.getName())){

                       cityList.add(city);
                   }
                   break;

               }


               type = xp.next();
           }

           for (City c : cityList) {
               System.out.println(c.toString());
           }
       } catch (Exception e) {

           e.printStackTrace();
       }
   }

}

生成 xml文件代码

package com.itheima.createxml;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.List;

import com.itheima.createxml.domain.Message;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;

public class MainActivity extends Activity {

   List<Message> smsList;
   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main);


       smsList = new ArrayList<Message>();
       for(int i = 0; i < 10; i++){
           Message sms = new Message("С־�ð�" + i, System.currentTimeMillis() + "", "138"+i+i, "1");
           smsList.add(sms);
       }
   }

   public void click(View v){

       StringBuffer sb = new StringBuffer();
       sb.append("<?xml version='1.0' encoding='utf-8' standalone='yes' ?>");
       sb.append("<messages>");
       for (Message sms : smsList) {
           sb.append("<sms>");

           sb.append("<body>");
           sb.append(sms.getBody());
           sb.append("</body>");

           sb.append("<date>");
           sb.append(sms.getDate());
           sb.append("</date>");

           sb.append("<type>");
           sb.append(sms.getType());
           sb.append("</type>");

           sb.append("<address>");
           sb.append(sms.getAddress());
           sb.append("</address>");

           sb.append("</sms>");
       }
       sb.append("</messages>");

       File file = new File("sdcard/sms.xml");
       try {
           FileOutputStream fos = new FileOutputStream(file);
           fos.write(sb.toString().getBytes());
           fos.close();
       } catch (Exception e) {
           e.printStackTrace();
       }
   }

}

用xml序列化器代码

package com.itheima.xmlserializer;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.xmlpull.v1.XmlSerializer;

import com.itheima.createxml.domain.Message;

import android.os.Bundle;
import android.app.Activity;
import android.util.Xml;
import android.view.Menu;
import android.view.View;

public class MainActivity extends Activity {

   List<Message> smsList;

   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main);
       smsList = new ArrayList<Message>();
       for (int i = 0; i < 10; i++) {
           Message sms = new Message("С־�ð�" + i, System.currentTimeMillis()
                   + "", "138" + i + i, "1");
           smsList.add(sms);
       }
   }

   public void click(View v){
       XmlSerializer xs = Xml.newSerializer();
       File file = new File("sdcard/sms2.xml");
       try {
           FileOutputStream fos = new FileOutputStream(file);

           xs.setOutput(fos, "utf-8");


           xs.startDocument("utf-8", true);

           xs.startTag(null, "message");

           for (Message sms : smsList) {
               xs.startTag(null, "sms");

               xs.startTag(null, "body");
               xs.text(sms.getBody() + "<body>");
               xs.endTag(null, "body");

               xs.startTag(null, "date");
               xs.text(sms.getDate());
               xs.endTag(null, "date");

               xs.startTag(null, "type");
               xs.text(sms.getType());
               xs.endTag(null, "type");

               xs.startTag(null, "address");
               xs.text(sms.getAddress());
               xs.endTag(null, "address");

               xs.endTag(null, "sms");
           }

           xs.endTag(null, "message");


           xs.endDocument();
       } catch (Exception e) {

           e.printStackTrace();
       }
   }

}

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