安卓开发之利用XmlSerializer生成XML文件

package com.lidaochen.phonecall;

import android.net.Uri;
import android.os.Environment;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.util.Xml;
import android.view.View;
import android.widget.Button;
import android.widget.TabHost;
import android.widget.ThemedSpinnerAdapter;
import android.widget.Toast;

import org.xmlpull.v1.XmlSerializer;

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

public class MainActivity extends AppCompatActivity{
    private List<Sms> smsLists;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        // 初始化我们要备份的数据
        smsLists = new ArrayList<Sms>();
        for (int i = 0; i < 10; i++)
        {
            Sms sms = new Sms();
            sms.setAddres("10000" + i);
            sms.setBody("Hello" + i);
            sms.setDate("500" + i);
            // 把sms对象加入到集合中
            smsLists.add(sms);
        }
    }
    // 按钮点击事件
    public void click(View v)
    {
        try{
            // 1、通过Xml这个工具类去获取XmlSerializer类的实例
            XmlSerializer serializer = Xml.newSerializer();
            // 2、设置XmlSerializer序列化器参数
            File file = new File(Environment.getExternalStorageDirectory().getPath(), "LiDaochen.xml");
            FileOutputStream fos = new FileOutputStream(file);
            serializer.setOutput(fos, "utf-8");
            // 3、写xml文档开头
            serializer.startDocument("utf-8", true);
            // 4、写xml根节点
            serializer.startTag(null, "smss");
            for(Sms sms:smsLists)
            {
                serializer.startTag(null, "sms");
                // address节点
                serializer.startTag(null, "addres");
                serializer.text(sms.getAddres());
                serializer.endTag(null, "addres");
                // body节点
                serializer.startTag(null, "body");
                serializer.text(sms.getBody());
                serializer.endTag(null, "body");
                // date节点
                serializer.startTag(null, "date");
                serializer.text(sms.getDate());
                serializer.endTag(null, "date");
                serializer.endTag(null, "sms");
            }
            // 文档结尾
            serializer.endTag(null, "smss");
            serializer.endDocument();
            // 关闭流
            fos.close();
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }
}

package com.lidaochen.phonecall;

public class Sms {
    private String addres;
    private String body;
    private String date;

    public String getAddres() {
        return addres;
    }

    public String getBody() {
        return body;
    }

    public String getDate() {
        return date;
    }

    public void setAddres(String addres) {
        this.addres = addres;
    }

    public void setBody(String body) {
        this.body = body;
    }

    public void setDate(String date) {
        this.date = date;
    }
}