动态调整tableView单元格的高度 [英] dynamically size the height of the tableView cells

问题描述

我能够在表格中显示单元格内容，也可以自动换行以完全显示消息.但是我注意到，如果内容大于高度，则变得笨拙.如果内容太大，如何动态增加单元格的高度.由于我要从url检索数据，因此长度是变化的，所以我不想对高度进行硬编码，而是希望根据内容长度来变化它.

I am able to display the cell content in the table and also Wordwrap it to display the message entirely. But I noticed that if the content is more than the height than it becomes clumpsy. How do I increase the heighten a cell dynamically if the content is too large. Since I am retrieving data from a url the length varies so I do not want to hard code the height but want to vary it as per the content length.

到目前为止，我尝试过的代码如下:

The code that I have tried so far is as under :

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSDictionary *person = [myPeople objectAtIndex:[indexPath row]]; 

    NSString *personName = [person valueForKey:@"text"];

    NSString *cellText    = personName;
    UIFont *cellFont      = [UIFont fontWithName:@"Helvetica-neuve" size:21.0];
    CGSize constraintSize = CGSizeMake(280.0f, MAXFLOAT);
    CGSize labelSize      = [cellText sizeWithFont:cellFont constrainedToSize:constraintSize lineBreakMode:UILineBreakModeWordWrap];
    int buffer  = 70;
    return labelSize.height + buffer;
}

// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    static NSString *CellIdentifier = @"Cell";  

    UITableViewCell *cell = [commentView dequeueReusableCellWithIdentifier:CellIdentifier];  
    if (cell == nil) 
    {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
        cell.textLabel.lineBreakMode = UILineBreakModeWordWrap;
        cell.textLabel.numberOfLines = 6;
        cell.textLabel.font          = [UIFont fontWithName:@"Helvetica-neuve" size:21.0];
        [cell.textLabel setMinimumFontSize:13.0];
        [cell.textLabel setAdjustsFontSizeToFitWidth:NO];
    } 
    NSDictionary *person = [myPeople objectAtIndex:[indexPath row]]; 

    NSString *personName = [person valueForKey:@"text"];
    cell.textLabel.text = personName;
    return cell;
    }

推荐答案

就像我不喜欢发布链接一样.这将向您展示如何为飞行中的单元格计算正确的高度.

Much as I dislike posting just a link. This will show you how to calculate the correct height for your cell on the fly.

根据文本调整UILabel高度

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