xml序列化

1：

package com.itheima.xmlserializer;

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

import org.xmlpull.v1.XmlSerializer;

import android.app.Activity;
import android.os.Bundle;
import android.os.Environment;
import android.util.Xml;
import android.view.View;
import android.widget.Toast;

import com.itheima.xmlserializer.po.SmsInfo;

public class XmlserializerActivity extends Activity {
private ArrayList<SmsInfo> infos = new ArrayList<SmsInfo>();

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
int number = 135000;
for (int i = 0; i < 10; i++) {
infos.add(new SmsInfo(i,System.currentTimeMillis(),"短信" + i,
number + i + ""));
}
}

public void save(View view) {
XmlSerializer xmlSerializer = Xml.newSerializer();
File file = new File(Environment.getExternalStorageDirectory(),
"config.xml");
try {
FileOutputStream fos = new FileOutputStream(file);
xmlSerializer.setoutput(fos,"utf-8");
xmlSerializer.startDocument("utf-8",true);

xmlSerializer.startTag(null,"smss");

for (SmsInfo info : infos) {
xmlSerializer.startTag(null,"sms");
xmlSerializer.attribute(null,"id",info.getId() + "");

xmlSerializer.startTag(null,"date");
xmlSerializer.text(info.getDate() + "");
xmlSerializer.endTag(null,"date");

xmlSerializer.startTag(null,"address");
xmlSerializer.text(info.getAddress());
xmlSerializer.endTag(null,"address");

xmlSerializer.startTag(null,"body");
xmlSerializer.text(info.getBody());
xmlSerializer.endTag(null,"body");

xmlSerializer.endTag(null,"sms");
}
xmlSerializer.endTag(null,"smss");

xmlSerializer.endDocument();
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();
}

}
}

2“

package com.itheima.xmlserializer.po;

public class SmsInfo {
private int id;
private long date;
private String body;
private String address;

public SmsInfo() {
super();
// Todo Auto-generated constructor stub
}

public SmsInfo(int id,long date,String body,String address) {
super();
this.id = id;
this.date = date;
this.body = body;
this.address = address;
}

public int getId() {
return id;
}

public void setId(int id) {
this.id = id;
}

public long getDate() {
return date;
}

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

public String getBody() {
return body;
}

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

public String getAddress() {
return address;
}

public void setAddress(String address) {
this.address = address;
}

}

3：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<Button
android:onClick="save"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="保存xml文件" />

</LinearLayout>