短信备份助手

来源：互联网发布：希赛网络软考学院编辑：程序博客网时间：2024/04/29 05:54

清单文件

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

package="com.arvin.smsbackup"

android:versionCode="1"

android:versionName="1.0" >

<uses-sdk

android:minSdkVersion="8"

android:targetSdkVersion="17" />

<uses-permission android:name="android.permission.READ_SMS"/> 增加权限

<uses-permission android:name="android.permission.WRITE_SMS"/>

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

<application

android:allowBackup="true"

android:icon="@drawable/ic_launcher"

android:label="@string/app_name"

android:theme="@style/AppTheme" >

<activity

android:name="com.arvin.smsbackup.MainActivity"

android:label="@string/app_name" >

<intent-filter>

</intent-filter>

</activity>

</application>

</manifest>

布局

<LinearLayout 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:orientation="vertical"

tools:context=".MainActivity" >

<Button

android:onClick="smsBackup"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="短信备份" />

<Button

android:onClick="smsRestore"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="短信还原" />

</LinearLayout>

主界面

package com.arvin.smsbackup;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import org.xmlpull.v1.XmlPullParser;

import org.xmlpull.v1.XmlPullParserException;

import org.xmlpull.v1.XmlSerializer;

import android.app.Activity;

import android.app.AlertDialog;

import android.app.AlertDialog.Builder;

import android.content.ContentResolver;

import android.content.ContentValues;

import android.content.DialogInterface;

import android.content.DialogInterface.OnClickListener;

import android.database.Cursor;

import android.net.Uri;

import android.os.Bundle;

import android.os.Environment;

import android.util.Xml;

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);

}

/**

* 短信的备份

* @param view

public void smsBackup(View view) {

try {

// 利用内容提供者获取短信私有的数据

ContentResolver resovler = getContentResolver();

Uri uri = Uri.parse("content://sms/");

Cursor cursor = resovler.query(uri, new String[] { "address",

"date", "type", "body" }, null, null, null);

XmlSerializer serializer = Xml.newSerializer();

File file = new File(Environment.getExternalStorageDirectory(),

"backup.xml");

FileOutputStream os = new FileOutputStream(file);

serializer.setOutput(os, "utf-8");

//serializer.startTag( namespace, name); 命名空间标签名

// 写xml文件的头

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

serializer.startTag(null, "root");

while (cursor.moveToNext()) {

serializer.startTag(null, "sms");

serializer.startTag(null, "address");

String address = cursor.getString(0);

serializer.text(address);

serializer.endTag(null, "address");

serializer.startTag(null, "date");

String date = cursor.getString(1);

serializer.text(date);

serializer.endTag(null, "date");

serializer.startTag(null, "type");

String type = cursor.getString(2);

serializer.text(type);

serializer.endTag(null, "type");

serializer.startTag(null, "body");

String body = cursor.getString(3);

serializer.text(body);

serializer.endTag(null, "body");

serializer.endTag(null, "sms");

}

cursor.close();

serializer.endTag(null, "root");

serializer.endDocument();

os.close();

Toast.makeText(this, "备份成功", 0).show();

} catch (Exception e) {

e.printStackTrace();

Toast.makeText(this, "备份失败", 0).show();

}

/**

* 短信的还原

* @param view

public void smsRestore(View view) {

// file.lastModified(); 获取文件上一次备份的时间。

AlertDialog.Builder builder = new Builder(this);

builder.setTitle("提醒");

builder.setMessage("是否清除旧的短信?");

builder.setPositiveButton("确定清除", new OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

Uri uri = Uri.parse("content://sms/");

getContentResolver().delete(uri, null, null);

restore();

}

});

builder.setNegativeButton("不清除数据", new OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

restore();

}

});

builder.show();

}

/**

* 还原所有备份的短信。

protected void restore() {

try {

File file = new File(Environment.getExternalStorageDirectory(),

"backup.xml");

FileInputStream fis = new FileInputStream(file);

XmlPullParser parser = Xml.newPullParser();

parser.setInput(fis, "utf-8");

int type = parser.getEventType();

String address = null;

String date= null;

String smstype= null;

String body= null;

while (type != XmlPullParser.END_DOCUMENT) {

switch (type) {

case XmlPullParser.START_TAG:

if("type".equals(parser.getName())){

smstype = parser.nextText();

}else if("body".equals(parser.getName())){

body = parser.nextText();

}else if("date".equals(parser.getName())){

date = parser.nextText();

}else if("address".equals(parser.getName())){

address = parser.nextText();

}

break;

case XmlPullParser.END_TAG:

if("sms".equals(parser.getName())){

//一条短信的数据结束,把短信的数据加入到系统的短信应用数据库

ContentResolver resolver = getContentResolver();

ContentValues values = new ContentValues();

values.put("address", address);

values.put("body", body);

values.put("type", smstype);

values.put("date", date);

resolver.insert(Uri.parse("content://sms/"), values);

}

break;

}

type = parser.next();

}

Toast.makeText(this, "还原短信成功", 0).show();

} catch (Exception e) {

e.printStackTrace();

Toast.makeText(this, "还原短信失败", 0).show();

}

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