android 生成、pull解析xml文件

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context="com.example.generatexml.MainActivity" >

    <Button

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="短信备份1"

        android:id="@+id/btn1"

        android:onClick="backupSms1" />

    <Button

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="短信备份2"

        android:id="@+id/btn2"

        android:layout_below="@id/btn1"

        android:onClick="backupSms2" />

     <Button

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="获取xml数据"

        android:id="@+id/btn3"

        android:layout_below="@id/btn2"

        android:onClick="getXml" />

     <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:id="@+id/tv_get"

        android:layout_below="@id/btn3"

        android:onClick="getXml" />

         />

</RelativeLayout>

package com.example.generatexml;

import java.io.File;

import java.io.FileOutputStream;

import java.util.ArrayList;

import java.util.List;

import org.xmlpull.v1.XmlSerializer;

import android.os.Bundle;

import android.os.Environment;

import android.support.v7.app.ActionBarActivity;

import android.util.Xml;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.widget.Toast;

import com.example.generatexml.domain.SmsInfo;

public class MainActivity extends ActionBarActivity {

    private List<SmsInfo> list;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        list = new ArrayList<SmsInfo>();

        long phone = 1880075555;

        for(int i=0;i<10;i++)

        {

            SmsInfo info = new SmsInfo(i, System.currentTimeMillis(),"<短信内容"+i,phone+i+"",i/2+1);

            list.add(info);

        }

    }

    public void backupSms1(View v){

        try {

            File file = new File(Environment.getExternalStorageDirectory(),"backup1.xml");

            FileOutputStream fos = new FileOutputStream(file);

            StringBuffer sb = new StringBuffer();

            sb.append("<?xml version=\"1.0\" encoding=\"utf-8\"?>");

            sb.append("<smss>");

            for(SmsInfo s :list)

            {

                sb.append("<sms>");

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

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

                sb.append("<addr>"+s.getAddr()+"</addr>");

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

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

            }

            sb.append("</smss>");

            fos.write(sb.toString().getBytes());

            fos.close();

            Toast.makeText(this, "保存成功", 0).show();

        } catch (Exception e) {

            e.printStackTrace();

            Toast.makeText(this, "保存失败", 0).show();

        }

    }

    public void backupSms2(View v)

    {

        try {

            XmlSerializer ser = Xml.newSerializer();

            File file = new File(Environment.getExternalStorageDirectory(),"backup2.xml");

            FileOutputStream os = new FileOutputStream(file);

            ser.setOutput(os, "utf-8");

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

            ser.startTag(null, "smss");

            for(SmsInfo s :list)

            {

                ser.startTag(null, "sms");

                ser.attribute(null, "id", s.getId()+"");

                ser.startTag(null, "body");

                ser.text(s.getBody());

                ser.endTag(null, "body");

                ser.startTag(null, "type");

                ser.text(s.getType()+"");

                ser.endTag(null, "type");

                ser.startTag(null, "addr");

                ser.text(s.getAddr());

                ser.endTag(null, "addr");

                ser.startTag(null, "date");

                ser.text(s.getDate()+"");

                ser.endTag(null, "date");

                ser.endTag(null, "sms");

            }

            ser.endTag(null, "smss");

            ser.endDocument();

            os.close();

            Toast.makeText(this, "保存成功", 0).show();

        } catch(Exception e) {

            e.printStackTrace();

            Toast.makeText(this, "保存失败", 0).show();

        }

    }

}

//解析xml文件
 public void getXml(View v)

    {

        TextView tv = (TextView)this.findViewById(R.id.tv_get);

        try {

            InputStream is = MainActivity.this.getClassLoader().getResourceAsStream("backup2.xml");

            List<SmsInfo> list = ParserXmlService.getSmsInfos(is);

            StringBuffer sb = new StringBuffer();

            for(SmsInfo s:list)

            {

                sb.append(s.toString());

            }

            tv.setText(sb.toString());

            Toast.makeText(this, sb.toString(), 0).show();

        } catch (Exception e) {

            e.printStackTrace();

            Toast.makeText(this, "xml解析失败", 0).show();

        }

    }

解析xml文件的service代码

package com.example.generatexml.service;

import java.io.InputStream;

import java.util.ArrayList;

import java.util.List;

import org.xmlpull.v1.XmlPullParser;

import android.util.Xml;

import com.example.generatexml.domain.SmsInfo;

public class ParserXmlService {

    public static List<SmsInfo> getSmsInfos(InputStream is) throws Exception

    {

        System.out.println("service");

        XmlPullParser parser = Xml.newPullParser();

        parser.setInput(is, "utf-8");

        List<SmsInfo> list = null;

        SmsInfo sms = null;

        int type = parser.getEventType();

        while(type!=XmlPullParser.END_DOCUMENT)

        {

            switch(type)

            {

                case XmlPullParser.START_TAG:

                    if("smss".equals(parser.getName()))

                    {

                        list = new ArrayList<SmsInfo>();

                    }

                    else if("sms".equals(parser.getName()))

                    {

                        sms = new SmsInfo();

                        String id = parser.getAttributeValue(0);

                        sms.setId(Integer.parseInt(id));

                    }else if("body".equals(parser.getName()))

                    {

                        String body = parser.nextText();

                        sms.setBody(body);

                    }else if("addr".equals(parser.getName()))

                    {

                        String addr = parser.nextText();

                        sms.setAddr(addr);

                    }

                    else if("date".equals(parser.getName()))

                    {

                        String date = parser.nextText();

                        sms.setDate(Long.parseLong(date));

                    }

                    else if("type".equals(parser.getName()))

                    {

                        String infoType = parser.nextText();

                        sms.setDate(Integer.parseInt(infoType));

                    }

                    break;

                case XmlPullParser.END_TAG:

                    if("sms".equals(parser.getName()))

                    {

                        list.add(sms);

                        sms = null;

                    }

                    break;

            }

            type = parser.next();

        }

        return list;

    }

}

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android 生成、pull解析xml文件

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