Android XML文件讀寫

 
          <? 
          xml version="1.0" encoding="UTF-8" 
          ?> 
          
 
          < 
          persons 
          > 
          
     
          < 
          person  
          id 
          ="23" 
          > 
          
         
          < 
          name 
          >eboy 
          </ 
          name 
          > 
          
         
          < 
          age 
          >22 
          </ 
          age 
          > 
          
     
          </ 
          person 
          > 
          
     
          < 
          person  
          id 
          ="24" 
          > 
          
         
          < 
          name 
          >Frr 
          </ 
          name 
          > 
          
         
          < 
          age 
          >20 
          </ 
          age 
          > 
          
     
          </ 
          person 
          > 
          
 
          </ 
          persons 
          > 
         

 package com.eboy.service;

 
          
 
          import java.io.InputStream; 
          
 
          import java.io.OutputStream; 
          
 
          import java.util.ArrayList; 
          
 
          import java.util.List; 
          
 
          import org.xmlpull.v1.XmlPullParser; 
          
 
          import org.xmlpull.v1.XmlSerializer; 
          
 
          
 
          import com.eboy.domain.Person; 
          
 
          
 
          import android.util.Xml; 
          
 
          
 
          public  
          class PersonService { 
          
     
          public  
          static List<Person> getPersons(InputStream xml)  
          throws Exception {         
          
        List<Person> persons =  
          null; 
          
        Person person =  
          null; 
          
        XmlPullParser pullParser = Xml.newPullParser(); 
          
        pullParser.setInput(xml, "UTF-8");  
          // 
          為Pull解釋器設置要解析的XML數據         
          
         
          int event = pullParser.getEventType(); 
          
         
          
         
          while (event != XmlPullParser.END_DOCUMENT){ 
          
             
          
             
          switch (event) { 
          
             
          
             
          case XmlPullParser.START_DOCUMENT: 
          
                persons =  
          new ArrayList<Person>();                 
          
                 
          break;     
          
             
          case XmlPullParser.START_TAG:     
          
                 
          if ("person".equals(pullParser.getName())){ 
          
                     
          int id = Integer.valueOf(pullParser.getAttributeValue(0)); 
          
                    person =  
          new Person(); 
          
                    person.setId(id); 
          
                } 
          
                 
          if ("name".equals(pullParser.getName())){ 
          
                    String name = pullParser.nextText(); 
          
                    person.setName(name); 
          
                }                                 
          
                 
          if ("age".equals(pullParser.getName())){ 
          
                     
          int age = Integer.valueOf(pullParser.nextText()); 
          
                    person.setAge(age); 
          
                } 
          
                 
          break; 
          
                 
          
             
          case XmlPullParser.END_TAG: 
          
                 
          if ("person".equals(pullParser.getName())){ 
          
                    persons.add(person); 
          
                    person =  
          null; 
          
                } 
          
                 
          break; 
          
                 
          
            } 
          
             
          
            event = pullParser.next(); 
          
        } 
          
         
          
         
          
         
          return persons; 
          
    } 
          
     
          
     
          /** 
          
     * 保存數據到xml文件中
     *  
          @param 
           persons
     *  
          @param 
           out
     *  
          @throws 
           Exception
      
          */ 
          
     
          public  
          static  
          void save(List<Person> persons, OutputStream out)  
          throws Exception { 
          
        XmlSerializer serializer = Xml.newSerializer(); 
          
        serializer.setOutput(out, "UTF-8"); 
          
        serializer.startDocument("UTF-8",  
          true); 
          
        serializer.startTag( 
          null, "persons");         
          
         
          for (Person person : persons) { 
          
            serializer.startTag( 
          null, "person");             
          
            serializer.attribute( 
          null, "id", person.getId().toString());             
          
            serializer.startTag( 
          null, "name");             
          
            serializer.text(person.getName().toString()); 
          
            serializer.endTag( 
          null, "name");             
          
            serializer.startTag( 
          null, "age");             
          
            serializer.text(person.getAge().toString()); 
          
            serializer.endTag( 
          null, "age");             
          
            serializer.endTag( 
          null, "person"); 
          
        }         
          
        serializer.endTag( 
          null, "persons"); 
          
        serializer.endDocument(); 
          
        out.flush(); 
          
        out.close(); 
          
    } 
          
} 
         

/Files/jxgxy/com.eboy.readwritexml.MainActivity.rar