黑马Android:XML序列化器

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package indi.cc.xmlserializer;import indi.cc.xmlserializer.domain.Message;import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.util.ArrayList;import java.util.List;import org.xmlpull.v1.XmlSerializer;import android.os.Bundle;import android.support.v7.app.ActionBarActivity;import android.util.Xml;import android.view.View;public class MainActivity extends ActionBarActivity {    List<Message> smsList;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);     // 虚拟10条短信        smsList = new ArrayList<Message>();        for (int i = 0; i < 10; i++) {            Message sms = new Message("wrennaaaa!!!" + i, System.currentTimeMillis()                    + "", "138" + i + i, "1");            smsList.add(sms);        }    }    public void click(View v){        //使用xml序列化器生成xml文件        //1.拿到序列化器对象        XmlSerializer xs = Xml.newSerializer();        //2.初始化        File file = new File("sdcard/sms2.xml");        try {            FileOutputStream fos = new FileOutputStream(file);            //enconding:指定用什么编码生成xml文件            xs.setOutput(fos, "utf-8");            //3.开始生成xml文件            //enconding:指定头结点中的enconding属性的值            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");            //告诉序列化器，文件生成完毕            xs.endDocument();        } catch (FileNotFoundException e) {            // TODO Auto-generated catch block            e.printStackTrace();        } catch (IllegalArgumentException e) {            // TODO Auto-generated catch block            e.printStackTrace();        } catch (IllegalStateException e) {            // TODO Auto-generated catch block            e.printStackTrace();        } catch (IOException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }    }}

package indi.cc.xmlserializer.domain;public class Message {    private String body;    private String date;    private String address;    private String type;    public String getBody() {        return body;    }    public void setBody(String body) {        this.body = body;    }    public String getDate() {        return date;    }    public void setDate(String date) {        this.date = date;    }    public String getAddress() {        return address;    }    public void setAddress(String address) {        this.address = address;    }    public String getType() {        return type;    }    public void setType(String type) {        this.type = type;    }    public Message(String body, String date, String address, String type) {        super();        this.body = body;        this.date = date;        this.address = address;        this.type = type;    }}

<!--添加权限-->    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

<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="indi.cc.xmlserializer.MainActivity" >   <Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="备分短信"         android:onClick="click"        /></RelativeLayout>

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