Android操做XML

一、寫入

private void backupData()
	{
		try
		{
			bulidData();
			String ENCODING = "utf-8";
			XmlSerializer serializer = Xml.newSerializer();
			File file = new File(this.getExternalFilesDir(null), "back.xml");
			FileOutputStream fos = new FileOutputStream(file);
			serializer.setOutput(fos, ENCODING);
			serializer.startDocument(ENCODING, true);
			serializer.startTag(null, "smses");
			for (SmsInfo sms : smsInfos)
			{
				serializer.startTag(null, "sms");
				serializer.attribute(null, "Content", sms.getContent());
				serializer.attribute(null, "Type", String.valueOf(sms.getType()));
				serializer.endTag(null, "sms");
			}

			serializer.endTag(null, "smses");
			serializer.endDocument();
			fos.close();
			Toast.makeText(this, "備份成功", Toast.LENGTH_SHORT).show();
		} catch (Exception e)
		{
			e.printStackTrace();
			//Toast.makeText(this, e.getMessage(), 0).show();
		}

	}

二、讀取

package com.pas.readxml.service;

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

import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;

import android.os.Environment;
import android.util.Xml;

public class WeatherService
{
	public static List<String> getWeatherStrings()
	{
		
		try
		{
			File SD_path=new File(Environment.getExternalStorageDirectory(),"city.xml");
			FileInputStream is=new FileInputStream(SD_path);
			XmlPullParser parser=Xml.newPullParser();
			parser.setInput(is, "utf-8");
			int type=parser.getEventType();
			/*
			 * 文檔開頭START_DOCUMENT
			 * 文檔結尾END_DOCUMENT
			 */
			List<String> city=null;
			while(type!=XmlPullParser.END_DOCUMENT)
			{
				switch (type)
				{
				case XmlPullParser.START_TAG:
					if("ArrayOfString".equals(parser.getName()))
					{
						city=new ArrayList<String>(); 
					}
					else if("string".equals(parser.getName()))
					{
						city.add(parser.nextText());
					}
					break;
				default:
					break;
				}
				type=parser.next();
			}
			
			return city;
		} catch (Exception e)
		{
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return null;
		
	}
}