/**
   * @param context
   * @param db
   * @param saveId
   * @return <0 失败
   */
  public static int deleteSaveInfo(Context context, int saveId) {

    createSaveTable(context);
    int ret = SaveInfoDao.deleteSaveInfo(db, saveId);
    if (db != null) {
      db.close();
    }
    return ret;
  }