具有动态高度iOS的UITableViewCell [英] UITableViewCell with dynamic height iOS
问题描述
我已在我的应用程序中使用CustomCell实现了TableView,
I have implemented TableView with CustomCell in my app,
我希望我的 UITableViewCell
的动态高度根据文本长度 UITableViewCell
,
I want dynamic height of my UITableViewCell
according to text length in UITableViewCell
,
这里是 Customcell $ c $的快照c>
:
这里是我的 UITableView的快照
:
heightForRowAtIndexPath的代码段
#define FONT_SIZE 14.0f
#define CELL_CONTENT_WIDTH 320.0f
#define CELL_CONTENT_MARGIN 10.0f
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath;
{
NSString *text = [DescArr objectAtIndex:[indexPath row]];
CGSize constraint = CGSizeMake(CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), 20000.0f);
CGSize size = [text sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap];
CGFloat height = MAX(size.height, 100.0);
return height;
}
正如您在第二张图片中看到的那样,单元格的高度是固定的,它不会随着它的文字(内容)大小而改变。
As you can see in the 2nd image, height for cell is fixed, it doesn't change with it's text (content) size.
我在哪里弄错了?如何根据内容/文本使标签或单元格更新其大小?
Where am I making mistake? How can I make a a label or a cell to update its size according to its contents/text?
推荐答案
以下代码工作正常对于我。试试这个
The following code worked fine for me.Try with this
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
CGFloat lRetval = 10;
CGSize maximumLabelSize = CGSizeMake(231, FLT_MAX);
CGSize expectedLabelSize;
CGFloat numberoflines = [thirdcellText length]/17.0;
if (indexPath.section == 0) {
expectedLabelSize = [firstcellText sizeWithFont:[UIFont systemFontOfSize:16.0]
constrainedToSize:maximumLabelSize
lineBreakMode:NSLineBreakByWordWrapping];
lRetval = expectedLabelSize.height;
}
else if(indexPath.section == 1)
{
expectedLabelSize = [secondcellText sizeWithFont:[UIFont systemFontOfSize:16.0]
constrainedToSize:maximumLabelSize
lineBreakMode:NSLineBreakByWordWrapping];
lRetval = expectedLabelSize.height;
}
else if (indexPath.section == 2)
{
expectedLabelSize = [thirdcellText sizeWithFont:[UIFont systemFontOfSize:16.0]
constrainedToSize:CGSizeMake(231, numberoflines*17.0)
lineBreakMode:NSLineBreakByWordWrapping];
lRetval = expectedLabelSize.height-128.0;
}
UIImage *factoryImage = [UIImage imageNamed:NSLocalizedString(@"barcode_factory_reset.png", @"")];
CGFloat height = factoryImage.size.height;
if (lRetval < height) {
lRetval = height+15.0;
}
return lRetval;
}
尝试在customcell类autolayout方法中添加以下代码
Try to add the following code in your customcell class autolayout method
textview.frame = frame;
CGRect frame1 = textview.frame;
frame1.size.height = textview.contentSize.height-2;
textview.frame = frame1;
textview.contentSize = CGSizeMake(textview.frame.size.width, textview.frame.size.height);
labelPtr.frame = CGRectMake(CGRectGetMinX(imageView.frame)+CGRectGetMaxX(imageView.frame)+5.0, textview.frame.size.height+10.0, 140, 16.0);
[labelPtr setNeedsDisplayInRect:labelPtr.frame];
尝试设置如下标签属性
labelPtr = [[UILabel alloc] initWithFrame:CGRectZero];
labelPtr.backgroundColor =[UIColor clearColor];
[labelPtr setNeedsLayout];
[labelPtr setNeedsDisplay];
[self.contentView addSubview:labelPtr];
这篇关于具有动态高度iOS的UITableViewCell的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!