学习随笔笔记（未整理）

1.使用FMDB处理常量变量数据时，必须要把数据封装成对象，否则程序会崩溃报错。例如我想把一个BOOL值存进数据库时，需要做这些操作：

-(BOOL) insertNewModelDataToDatabase:(flower *)flower
{
    FMDatabase *db = [FMDatabase databaseWithPath:self.databasePath];

    if(![db open]) return NO;

    int isNotification = (flower.needNotification)? 1:0;

    BOOL success = [db executeUpdate:@"INSERT INTO flowers (name, soil, date, time, pic, noti) VALUES (?, ?, ?, ?, ?, ?)",
                    flower.name, flower.soil, flower.date, flower.time, flower.pic, [NSNumber numberWithInt:isNotification]];

    [db close];

    if (!success) NSLog(@"%@", [db lastErrorMessage]);

    return YES;
}

2.如何消除UITableviewCell的分割线的空白，添加以下代码：

#pragma mark 显示完整分割线（消除左空白）

- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
    if ([cell respondsToSelector:@selector(setSeparatorInset:)]) {
        [cell setSeparatorInset:UIEdgeInsetsZero];
    }

    if ([cell respondsToSelector:@selector(setLayoutMargins:)]) {
        [cell setLayoutMargins:UIEdgeInsetsZero];
    }
}

- (void)viewDidLayoutSubviews
{
    if ([self.detailTableView respondsToSelector:@selector(setSeparatorInset:)]) {
        [self.detailTableView setSeparatorInset:UIEdgeInsetsZero];
    }

    if ([self.detailTableView respondsToSelector:@selector(setLayoutMargins:)]) {
        [self.detailTableView setLayoutMargins:UIEdgeInsetsZero];
    }
}