首先实现备份与短信的还原需要记得添加权限:
短信备份/还原工具类
package com.loaderman.sms.utils;import android.content.ContentResolver;import android.content.ContentValues;import android.content.Context;import android.database.Cursor;import android.net.Uri;import android.os.SystemClock;import com.google.gson.Gson;import com.google.gson.reflect.TypeToken;import java.io.File;import java.io.FileOutputStream;import java.io.FileReader;import java.lang.reflect.Type;import java.util.ArrayList;/** * 短信备份/还原工具类 */public class SmsUtils { //短信备份 public static void smsBackup(Context ctx, File file, OnSmsCallback callback) throws Exception { //1. 读取系统的短信数据库: dta/data/android.provider.telephony/databases/mmssms.db // list = new ArrayList<>(); if (cursor != null) { int progress = 0;//当前备份条数 while (cursor.moveToNext()) { SmsInfo info = new SmsInfo(); info.address = cursor.getString(cursor.getColumnIndex("address"));//短信号码 info.date = cursor.getString(cursor.getColumnIndex("date"));//短信时间 info.read = cursor.getString(cursor.getColumnIndex("read"));//已读未读, 0表示未读,1表示已读 info.type = cursor.getString(cursor.getColumnIndex("type"));//短信类型, 1表示接收, 2表示发送 info.body = cursor.getString(cursor.getColumnIndex("body"));//短信内容 list.add(info); progress++; //int percent = progress * 100 / totalCount; //更新进度条 //dialog.setProgress(progress); //将短信进度回调给上一个页面 callback.onProgress(progress); SystemClock.sleep(500);//模拟耗时 } } // System.out.println(list); //2. 将短信内容保存在本地, sdcard, 数据库, sp, file //放在本地文件中: xxx.backup-->序列化(就是将对象转为可见的字符串), 格式, xml, json //json: [{address:110, date:11231232}, {},{}] //Gson: google json-->将对象序列化为json或将json反序列化为对象 Gson gson = new Gson(); String json = gson.toJson(list); //System.out.println("json:" + json); FileOutputStream out = new FileOutputStream(file); out.write(json.getBytes()); out.flush(); out.close(); } //短信还原 public static void smsRestore(Context ctx, File file, OnSmsCallback callback) throws Exception { //1. 从本地文件中读取短信,反序列化为对象集合 Gson gson = new Gson(); //初始化类型, 当集合中还有对象时需要通过此种方式来反序列化 Type type = new TypeToken >() { }.getType(); //读取文件流, 反序列化为集合 ArrayList list = gson.fromJson(new FileReader(file), type); callback.onGetTotalCount(list.size()); System.out.println("短信还原:" + list); //2. 遍历集合, 插入短信数据库 ContentResolver resolver = ctx.getContentResolver(); int progress = 0; for (SmsInfo info : list) { //插入短信之前,必须判断短信是否存在 Cursor cursor = resolver.query(Uri.parse("content://sms"), null, "address=? and " + "date=?" + " and body=? and" + " type=? and read=?", new String[]{info.address, info.date, info.body, info .type, info.read}, null); if (cursor != null) { if (cursor.moveToNext()) { //短信存在, 不需要插入 //return ? break? continue? continue;//循环继续 } cursor.close(); } ContentValues values = new ContentValues(); values.put("address", info.address); values.put("date", info.date); values.put("body", info.body); values.put("type", info.type); values.put("read", info.read); resolver.insert(Uri.parse("content://sms"), values); progress++; callback.onProgress(progress); SystemClock.sleep(500); } } public static class SmsInfo { public String address; public String date; public String read; public String type; public String body; @Override public String toString() { return "SmsInfo{" + "address='" + address + '\'' + ", body='" + body + '\'' + '}'; } } //声明一个回调接口 public interface OnSmsCallback { //1. 获取短信的总数 void onGetTotalCount(int totalCount); //2. 获取当前备份进度 void onProgress(int progress); }}
备份短信的方法:
private void smsBackup() { if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) { Toast.makeText(this, "没有找到sdcard!", Toast.LENGTH_SHORT).show(); return; } //显示备份进度条 final ProgressDialog dialog = new ProgressDialog(this); dialog.setTitle("正在备份,请稍候..."); dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); dialog.show(); new Thread() { @Override public void run() { // SmsCallbackImpl impl = new SmsCallbackImpl();// impl.onProgress(10);// impl.onGetTotalCount(13); //回调-->对象的引用传递到底层, 由底层其他类调用当前对象的方法 //短信备份 try { SmsUtils.smsBackup(getApplicationContext(), new File(Environment .getExternalStorageDirectory() .getAbsolutePath() + "/sms11.backup"), new SmsUtils.OnSmsCallback() { @Override public void onGetTotalCount(int totalCount) { System.out.println("获取短信总数啦:" + totalCount); dialog.setMax(totalCount); progressBar.setMax(totalCount); } @Override public void onProgress(int progress) { System.out.println("获取短信进度啦:" + progress); dialog.setProgress(progress); progressBar.setProgress(progress); } }); } catch (Exception e) { e.printStackTrace(); //备份失败 runOnUiThread(new Runnable() { @Override public void run() { Toast.makeText(CommonToolActivity.this, "备份失败!", Toast.LENGTH_SHORT) .show(); } }); } dialog.dismiss(); } }.start(); } 还原短信的方法
private void smsRestore() { if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) { Toast.makeText(this, "没有找到sdcard!", Toast.LENGTH_SHORT).show(); return; } //显示还原进度条 final ProgressDialog dialog = new ProgressDialog(this); dialog.setTitle("正在还原,请稍候..."); dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); dialog.show(); new Thread() { @Override public void run() { try { SmsUtils.smsRestore(getApplicationContext(), new File(Environment .getExternalStorageDirectory() .getAbsolutePath() + "/sms11.backup"), new SmsUtils.OnSmsCallback() { @Override public void onGetTotalCount(int totalCount) { dialog.setMax(totalCount); } @Override public void onProgress(int progress) { dialog.setProgress(progress); } }); } catch (Exception e) { e.printStackTrace(); //还原失败 runOnUiThread(new Runnable() { @Override public void run() { Toast.makeText(CommonToolActivity.this, "还原失败!", Toast.LENGTH_SHORT) .show(); } }); } dialog.dismiss(); } }.start(); } //实现回调接口// class SmsCallbackImpl implements SmsUtils.OnSmsCallback {//// @Override// public void onGetTotalCount(int totalCount) {// System.out.println("获取短信总数啦:" + totalCount);// }//// @Override// public void onProgress(int progress) {// System.out.println("获取短信进度啦:" + progress);// }// }}