Android数据库大批量数据插入优化

对比在android中批量插入数据的3中方式对比（各插入1W条数据所花费的时间）：

1、 一个一个插入

 public static boolean insert(SQLiteOpenHelper openHelper,
             RemoteAppInfo appInfo) {
         if (null == appInfo) {
             returntrue;
         }
         SQLiteDatabase db = null;
         try {
             db = openHelper.getWritableDatabase();
             ContentValues values = appInfo.getContentValues();
             return -1 != db.insert(RemoteDBHelper.TABLE_APP_REMOTE, null,
                     values);
         } catch (Exception e) {
             e.printStackTrace();
         } finally {
             if (null != db) {
                 db.close();
             }
         }
         returnfalse;
     }  

     for (RemoteAppInfo remoteAppInfo : list) {
           RemoteDBUtil.insert(helper, remoteAppInfo);
         }

耗时：106524ms,也就是106s

2、 开启事务批量插入，使用SqliteDateBase中的insert(String table, String nullColumnHack, ContentValues values)方法

 public static boolean insert(SQLiteOpenHelper openHelper,
         List<RemoteAppInfo> list) {
     boolean result = true;
     if (null == list || list.size() <= 0) {
         returntrue;
     }
     SQLiteDatabase db = null;  

     try {
         db = openHelper.getWritableDatabase();
         db.beginTransaction();
         for (RemoteAppInfo remoteAppInfo : list) {
             ContentValues values = remoteAppInfo.getContentValues();
             if (db.insert(RemoteDBHelper.TABLE_APP_REMOTE, null, values) < 0) {
                 result = false;
                 break;
             }
         }
         if (result) {
             db.setTransactionSuccessful();
         }
     } catch (Exception e) {
         e.printStackTrace();
         returnfalse;
     } finally {
         try {
             if (null != db) {
                 db.endTransaction();
                 db.close();
             }
         } catch (Exception e) {
             e.printStackTrace();
         }
     }
     returntrue;
 }  

耗时：2968ms

3、 开启事务批量插入，使用SQLiteStatement

 public static boolean insertBySql(SQLiteOpenHelper openHelper,
             List<RemoteAppInfo> list) {
         if (null == openHelper || null == list || list.size() <= 0) {
             returnfalse;
         }
         SQLiteDatabase db = null;
         try {
             db = openHelper.getWritableDatabase();
             String sql = "insert into " + RemoteDBHelper.TABLE_APP_REMOTE + "("
                     + RemoteDBHelper.COL_PKG_NAME + ","// 包名
                     + RemoteDBHelper.COL_USER_ACCOUNT + ","// 账号
                     + RemoteDBHelper.COL_APP_SOURCE + ","// 来源
                     + RemoteDBHelper.COL_SOURCE_UNIQUE + ","// PC mac 地址
                     + RemoteDBHelper.COL_MOBILE_UNIQUE + ","// 手机唯一标识
                     + RemoteDBHelper.COL_IMEI + ","// 手机IMEI
                     + RemoteDBHelper.COL_INSTALL_STATUS + ","// 安装状态
                     + RemoteDBHelper.COL_TRANSFER_RESULT + ","// 传输状态
                     + RemoteDBHelper.COL_REMOTE_RECORD_ID // 唯一标识
                     + ") " + "values(?,?,?,?,?,?,?,?,?)";
             SQLiteStatement stat = db.compileStatement(sql);
             db.beginTransaction();
             for (RemoteAppInfo remoteAppInfo : list) {
                 stat.bindString(1, remoteAppInfo.getPkgName());
                 stat.bindString(2, remoteAppInfo.getAccount());
                 stat.bindLong(3, remoteAppInfo.getFrom());
                 stat.bindString(4, remoteAppInfo.getFromDeviceMd5());
                 stat.bindString(5, remoteAppInfo.getMoblieMd5());
                 stat.bindString(6, remoteAppInfo.getImei());
                 stat.bindLong(7, remoteAppInfo.getInstallStatus());
                 stat.bindLong(8, remoteAppInfo.getTransferResult());
                 stat.bindString(9, remoteAppInfo.getRecordId());
                 long result = stat.executeInsert();
                 if (result < 0) {
                     returnfalse;
                 }
             }
             db.setTransactionSuccessful();
         } catch (Exception e) {
             e.printStackTrace();
             returnfalse;
        } finally {
             try {
                 if (null != db) {
                     db.endTransaction();
                     db.close();
                 }
             } catch (Exception e) {
                 e.printStackTrace();
             }
         }
         returntrue;
     }

耗时：1365ms