Objective c 可滚动日历月视图：集合视图中自定义按钮的标题文本被覆盖

我想创建一个自定义的、可滚动的月份视图，在该视图中，用户可以像iPad日历一样滚动相应年份的所有月份

所以我为我需要的所有日期组件创建了一个数组。此阵列中有12个子阵列，每个月一个子阵列。我已经设法用相应年份的正确日期组件填充子数组

我将collectionView中的节数设置为每月12节，并且节中的项目数与当月的天数相同

为了用日期组件标记集合视图单元格中的按钮标题，我编写了以下方法来获取标题标签的字符串：

- (NSString *)getDayOfMonthFromComponent: (NSDateComponents *)components{

    NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
    NSDate *newDate = [gregorian dateByAddingComponents:components toDate:self.currentDate options:0];

    NSDateFormatter *dateFormatterDayOfMonth = [[NSDateFormatter alloc]init];
    [dateFormatterDayOfMonth setDateFormat:@"d"]; // filter day of month

    NSString *dayOfMonth = [dateFormatterDayOfMonth stringFromDate:newDate];
    return dayOfMonth;
}

这就是我标记自定义按钮的方式：

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {

    EMMonthCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"MonthCell" forIndexPath:indexPath];
    EMBorderlessButton *button;

#pragma mark - dateLabel sort algorithm iPhone

    if (IS_IPHONE){

#pragma mark - dateLabel sort algorithm iPad

    } else if (IS_IPAD){

        button = [[EMBorderlessButton alloc]initWithFrame:CGRectMake(110, 10, 30, 30)];
        NSString *titleText;

        NSLog(@"index path: %ld of section: %ld", (long)indexPath.row, (long)indexPath.section);

        if (indexPath.row < [[self.daysThisMonthArray objectAtIndex:indexPath.section] intValue]){
            titleText = [self getDayOfMonthFromComponent:self.dateComponents [indexPath.section] [indexPath.row]];
        }

        [button setTitle:titleText forState:UIControlStateNormal];
        [button setUserInteractionEnabled:NO];
        [button setSelected:FALSE];
        [button setTag:indexPath.row];

        [cell addSubview:button];
        [self.buttonArray addObject:button];
        [cell bringSubviewToFront:button];

    }

    return cell;
}

标签基本上有效，但一旦我开始滚动，标题标签就会被覆盖。 我如何解决这个问题？提前感谢你的帮助

---

解决了。解决方案非常简单：使用interface builder，我只需在集合视图单元格中拖动一个按钮，并将其分配给自定义按钮类。此外，我将创建的按钮作为插座连接到我的自定义集合视图单元类

之后，我更改了如下代码：

#pragma mark - dateLabel sort algorithm iPad

    } else if (IS_IPAD){

        NSLog(@"check content: %@", self.daysThisMonthArray);
        EMBorderlessButton *theLabel = (EMBorderlessButton *)[cell viewWithTag:100];
        [theLabel setTitleColor:[UIColor em_darkViolett] forState:UIControlStateNormal];

        if (indexPath.row < [[self.daysThisMonthArray objectAtIndex:indexPath.section] intValue]){
            [cell.dateButton setTitle:[self getDayOfMonthFromComponent:self.dateComponents [indexPath.section] [indexPath.row]] forState:UIControlStateNormal];

            if ([[self getDayOfMonthFromComponent:self.dateComponents [indexPath.section] [indexPath.row]] isEqualToString:@"1"]){
                [cell.dateButton setTitle:[NSString stringWithFormat:@"%@. %@", [self getDayOfMonthFromComponent:self.dateComponents [indexPath.section] [indexPath.row]], [self getMonthNameFromComponents:self.dateComponents [indexPath.section] [indexPath.row]]] forState:UIControlStateNormal];
            }
        }

        [self.buttonArray addObject:theLabel];
    }

    return cell;
}