Question

我有聊天表的动态单元格。我有留言标签和时间标签。对比如下

消息标签前导＆gt; = 100

消息标签尾随= 15

消息标签top = 10

消息标签底部到时间标签top = 5

时间标签到底= 5

时间标签宽度60和高度21

时间标签尾随= 15

我尝试了很多内容拥抱和贪婪的价值观。消息标签内容拥抱属性是

水平250

垂直1000

抗压缩性

水平250

垂直1000

第一次正确计算身高。 但是当我在发送或接收消息时添加新单元格时，返回并返回相同视图，其高度增加更多1500 。以下是查找行高的代码。

-(CGFloat)heightForCellAtIndexPath:(NSIndexPath*)indexPath
{
    MessageCentreService *message = [[self.dic_messages objectForKey:[self.array_dates objectAtIndex:indexPath.section]] objectAtIndex:indexPath.row];

    static dispatch_once_t onceToken;
    static AttendieChatTableViewCell *sizingRightCell = nil;
    static AttendieChatTableViewCell *sizingLeftCell = nil;
    dispatch_once(&onceToken, ^{
        sizingLeftCell = [self.tableView_attendeeChatList dequeueReusableCellWithIdentifier:kCellChatLeftIdentifier];
        sizingRightCell = [self.tableView_attendeeChatList dequeueReusableCellWithIdentifier:kCellChatRightIdentifier];
    });


    sizingLeftCell.bounds = CGRectMake(0.0f, 0.0f, CGRectGetWidth([UIScreen mainScreen].bounds), CGRectGetHeight(sizingLeftCell.bounds));
    sizingRightCell.bounds = CGRectMake(0.0f, 0.0f, CGRectGetWidth(self.tableView_attendeeChatList.frame), CGRectGetHeight(sizingRightCell.bounds));

    if(message.message_type == 1)
    {
        sizingLeftCell.label_message.text = message.message_text;
        sizingLeftCell.label_messageTime.text = @"10.30 pm";

        [sizingLeftCell setNeedsLayout];
        [sizingLeftCell layoutIfNeeded];

        CGSize size = [sizingLeftCell.contentView systemLayoutSizeFittingSize:UILayoutFittingCompressedSize];

        return size.height;
    }
    else
    {
        sizingRightCell.label_message.text = message.message_text;
        sizingRightCell.label_messageTime.text = @"10.30 pm";
        [sizingRightCell setNeedsLayout];
        [sizingRightCell layoutIfNeeded];
        CGSize size = [sizingRightCell.contentView systemLayoutSizeFittingSize:UILayoutFittingCompressedSize];
        return size.height;
    }
}

Answer 1

我也遇到了systemLayoutSizeFittingSize的问题，我通过设置preferredMaxLayoutWidth来修复它。

滚动或重新加载后，单元格高度会增加

1 个答案: