模拟备份短信功能，首先要知道存短信得分为四个部分，短信体，时间，传送方式：接收/发送，还有就是电话号码。
然后我们定义一个javabean对他进行封装。然后通过stringbuffer拼接好，传入到本地sd卡中，就完成了；
短信封装类
package com.example.xmlsave;
public class Mess {
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 Mess(String body, String date, String address, String type) {
super();
this.body = body;
this.date = date;
this.address = address;
this.type = type;
}
}
activity代码
package com.example.xmlsave;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import android.os.Bundle;
import android.os.Environment;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class MainActivity extends Activity {
private Button btn;
private List<Mess> list ;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
list = new ArrayList<Mess>();
//模拟存入短信到list里
for (int i = 0; i < 10; i++) {
//短信封装对象
Mess mess = new Mess("吉明哲真帅"+i, new Date()+"", "138"+i, "1");
list.add(mess);
}
btn = (Button) findViewById(R.id.btn);
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
//用stringbuffer进行拼接
StringBuffer sb = new StringBuffer();
sb.append("<?xml version=‘1.0‘ encoding=‘utf-8‘?>");
sb.append("<Message>");
for (int i = 0; i < list.size(); i++) {
sb.append("<msm>");
sb.append("<body>");
sb.append(list.get(i).getBody());
sb.append("</body>");
sb.append("<type>");
sb.append(list.get(i).getType());
sb.append("</type>");
sb.append("<date>");
sb.append(list.get(i).getDate());
sb.append("</date>");
sb.append("<address>");
sb.append(list.get(i).getAddress());
sb.append("</address>");
sb.append("</msm>");
}
sb.append("</Message>");
//获得sd卡路径
File file = new File(Environment.getExternalStorageDirectory()+File.separator+"mes.xml");
try {
FileOutputStream fos = new FileOutputStream(file);
fos.write(sb.toString().getBytes());
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
}
}
通过xml系列化器生成xml文件
package com.example.xmlsave;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import org.xmlpull.v1.XmlSerializer;
import android.os.Bundle;
import android.os.Environment;
import android.app.Activity;
import android.util.Xml;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class MainActivity extends Activity {
private Button btn;
private List<Mess> list;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
list = new ArrayList<Mess>();
// 模拟存入短信到list里
for (int i = 0; i < 10; i++) {
// 短信封装对象
Mess mess = new Mess("吉明哲真帅" + i, new Date() + "", "138" + i, "1");
list.add(mess);
}
btn = (Button) findViewById(R.id.btn);
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// 判断sd卡是否挂载
if (Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED)) {
File file = new File(Environment
.getExternalStorageDirectory()
+ File.separator
+ "sms2.xml");
try {
FileOutputStream fos = new FileOutputStream(file);
// 声明xml序列化对象
XmlSerializer xs = Xml.newSerializer();
// 初始化 参数为文件输出流和生成xml文件的编码集
xs.setOutput(fos, "utf-8");
// 开始生成xml文件 参数为头文件的编码集 xml文件是否独立
xs.startDocument("utf-8", true);
// 生成开始节点 命名空间 节点的名字不用加尖括号
xs.startTag(null, "message");
for (int i = 0; i < list.size(); i++) {
xs.startTag(null, "msm");
xs.startTag(null, "body");
// 内容
xs.text(list.get(i).getBody());
xs.endTag(null, "body");
xs.startTag(null, "type");
xs.text(list.get(i).getType());
xs.endTag(null, "type");
xs.startTag(null, "date");
xs.text(list.get(i).getDate());
xs.endTag(null, "date");
xs.startTag(null, "address");
xs.text(list.get(i).getAddress());
xs.endTag(null, "address");
xs.endTag(null, "msm");
}
xs.endTag(null, "message");
// 告诉序列化器生成完毕
xs.endDocument();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
});
}
}
时间： 2024-10-13 11:28:03