05 备份手机短信

----------------main.java----------------

package com.itheima28.backupsms;

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.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.content.ContentResolver;
import android.database.Cursor;
import android.util.Xml;
import android.view.Menu;
import android.view.View;
import android.widget.Toast;

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

}

/**
* 备份短信
* @param v
*/
public void backupSms(View v) {
// 1. 查出所有的短信
Uri uri = Uri.parse("content://sms/");

ContentResolver resolver = getContentResolver();
Cursor cursor = resolver.query(uri, new String[]{"_id", "address", "date", "type", "body"}, null, null, null);

if(cursor != null && cursor.getCount() > 0) {
List<SmsInfo> smsList = new ArrayList<SmsInfo>();
SmsInfo sms;

while(cursor.moveToNext()) { // 控制游标结果集的指针向下移一位, 当到最后一位, 停止.返回false
sms = new SmsInfo();
sms.setId(cursor.getInt(0)); // 设置短信的id
sms.setAddress(cursor.getString(1)); // 设置短信的号码
sms.setDate(cursor.getLong(2)); // 设置短信的日期
sms.setType(cursor.getInt(3)); // 设置短信的类型, 接收1还是发送2
sms.setBody(cursor.getString(4)); // 设置短信的内容
smsList.add(sms);
}
cursor.close();

// 2. 序列化到本地
writeToLocal(smsList);
}
}

/**
* 序列化到本地
*/
private void writeToLocal(List<SmsInfo> smsList) {

try {
XmlSerializer serializer = Xml.newSerializer(); // 得到序列化对象
// 指定输出位置
FileOutputStream fos = new FileOutputStream("/mnt/sdcard/sms.xml");
serializer.setOutput(fos, "utf-8");

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

serializer.startTag(null, "smss");

for (SmsInfo smsInfo : smsList) {
serializer.startTag(null, "sms");
serializer.attribute(null, "id", String.valueOf(smsInfo.getId()));

// 写号码
serializer.startTag(null, "address");
serializer.text(smsInfo.getAddress());
serializer.endTag(null, "address");

// 写时间
serializer.startTag(null, "date");
serializer.text(String.valueOf(smsInfo.getDate()));
serializer.endTag(null, "date");

//写类型
serializer.startTag(null, "type");
serializer.text(String.valueOf(smsInfo.getType()));
serializer.endTag(null, "type");

// 写内容
serializer.startTag(null, "body");
serializer.text(smsInfo.getBody());
serializer.endTag(null, "body");

serializer.endTag(null, "sms");
}

serializer.endTag(null, "smss");

serializer.endDocument();

Toast.makeText(this, "备份成功", 0).show();
} catch (Exception e) {
Toast.makeText(this, "备份失败", 0).show();
e.printStackTrace();
}

}
}

------------------SmsInfo.java-------------

package com.itheima28.backupsms.entities;

public class SmsInfo {

private int id;
private String address;
private long date;
private int type;
private String body;
public SmsInfo(int id, String address, long date, int type, String body) {
super();
this.id = id;
this.address = address;
this.date = date;
this.type = type;
this.body = body;
}
@Override
public String toString() {
return "SmsInfo [id=" + id + ", address=" + address + ", date=" + date
+ ", type=" + type + ", body=" + body + "]";
}
public SmsInfo() {
super();
// TODO Auto-generated constructor stub
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public long getDate() {
return date;
}
public void setDate(long date) {
this.date = date;
}
public int getType() {
return type;
}
public void setType(int type) {
this.type = type;
}
public String getBody() {
return body;
}
public void setBody(String body) {
this.body = body;
}
}

。。。。。。。。。。。main.xml。。。。。。。
<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"
tools:context=".MainActivity" >

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:onClick="backupSms"
android:text="备份短信" />

</RelativeLayout>

、、、、、、、、、、、、、权限、、、、
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_SMS"/>