Question

我正在尝试根据同一行上另一个标签的内容动态设置标签宽度。

我正在“cellForRowAtIndexPath”

中实现逻辑

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSLog(@"rowNumber:%d", indexPath.row);
    EntityTableViewCell *cell = nil;
    static NSString *CellIdentifier = @"Cell";

    cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];

    cell.companyNameLabel.text = [group1 objectAtIndex:indexPath.row];
    cell.companyCROfficeAddrLabel.text = [group2 objectAtIndex:indexPath.row];
    cell.companyBusinessAddrLabel.text = [group3 objectAtIndex:indexPath.row];

    cell.timestamp.text = [Utils getDateTimeString:[group4 objectAtIndex:indexPath.row]];

    [cell.companyLogoImageView setImageWithURL:[NSURL URLWithString:[myArray objectAtIndex:indexPath.row] ]
                              placeholderImage:[UIImage imageNamed: @"profile-image-placeholder"]
                                       options:indexPath.row == 0 ? SDWebImageRefreshCached : 0];

    //logics to dynamically change the label width to maximum utilize the realstate



    CGFloat timeStampWidth = [cell.timestamp.text sizeWithFont:cell.timestamp.font].width;
    CGFloat ksCompanyNameLableMaxWidth = 235;
    NSLog(@"timeStampWidth:%f", timeStampWidth);
    CGSize companyNameLableSize = CGSizeMake((ksCompanyNameLableMaxWidth - timeStampWidth), cell.companyNameLabel.frame.size.height);
    CGRect newFrame = cell.companyNameLabel.frame;
    newFrame.size = companyNameLableSize;
    cell.companyNameLabel.frame = newFrame;
    NSLog(@"companyLableWidth:%f", newFrame.size.width);


    return cell;
}

此代码存在多个问题。

表初始化时，虽然为每个单元调用了这段代码。标签的宽度仍设置为故事板中的大小。另一方面，如果我向下滚动，标签会按照代码中的设计正确显示。
因为我的应用程序中还有一个tabView控制器，每当我在选项卡之间切换时，动态填充的标签宽度将再次使用故事板中设置的默认标签宽度进行更新。

有人可以告诉我我做错了什么并建议解决方案吗？

由于

Answer 1

试试这段代码

#define FONT_SIZE 14.0f
#define CELL_CONTENT_MARGIN 8.0f

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath;
{
    NSString *text = [BugComments_text objectAtIndex:indexPath.row];
    CGSize constraint = CGSizeMake(tableView.frame.size.width - (CELL_CONTENT_MARGIN * 2), 20000.0f);
    CGSize size = [text sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:NSLineBreakByWordWrapping];
    CGFloat height = MAX(size.height+40, 60.0f);
    return height + (CELL_CONTENT_MARGIN * 2);
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
     NSString *text = [arrayofdata objectAtIndex:indexPath.row];
     CGSize constraint = CGSizeMake(tableView.frame.size.width - (CELL_CONTENT_MARGIN * 2), 20000.0f);
     CGSize size = [text sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:NSLineBreakByWordWrapping];
     [cell.Content_Text setText:text];
     cell.Content_Text setFrame:CGRectMake(CELL_CONTENT_MARGIN, CELL_CONTENT_MARGIN+cell.Content_Email.frame.origin.y+cell.Content_Email.frame.size.height, tableView.frame.size.width - (CELL_CONTENT_MARGIN * 2), MAX(size.height,20.0f))];
}

Answer 2

在您的cellForRowAtIndexPath中尝试此操作，以动态设置公司标签文本

  CGSize textSize = {
        200.0,   // limit width
        20000.0  // and height of text area
    };

    CGSize contentSize = [yourText sizeWithFont:[UIFont systemFontOfSize:17.0] constrainedToSize:textSize lineBreakMode:NSLineBreakByWordWrapping];
    CGFloat contentHeight = contentSize.height < 36? 36: contentSize.height; // lower bound for height

    CGRect companyLabelFrame = [cell.companyNameLabel frame];
    companyLabelFrame.size.height = contentHeight;
    [cell.companyNameLabel setFrame:companyLabelFrame];
    cell.companyNameLabel setText:yourText];

Answer 3

我终于通过明确指定它来解决问题并从@rdelmar得到答案请查看链接Here

UITableView中的动态标签宽度

3 个答案: