这里有一个更简单的方法，它对我有用:

Here is a simpler way, and it works for me:

在您的 cellForRowAtIndexPath: 函数中.第一次创建单元格:

Inside your cellForRowAtIndexPath: function. The first time you create your cell:

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
    cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
    cell.textLabel.lineBreakMode = UILineBreakModeWordWrap;
    cell.textLabel.numberOfLines = 0;
    cell.textLabel.font = [UIFont fontWithName:@"Helvetica" size:17.0];
}

您会注意到我将标签的行数设置为 0.这使它可以根据需要使用尽可能多的行.

You'll notice that I set the number of lines for the label to 0. This lets it use as many lines as it needs.

下一部分是指定你的 UITableViewCell 有多大，所以在你的 heightForRowAtIndexPath 函数中这样做:

The next part is to specify how large your UITableViewCell will be, so do that in your heightForRowAtIndexPath function:

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSString *cellText = @"Go get some text for your cell.";
    UIFont *cellFont = [UIFont fontWithName:@"Helvetica" size:17.0];
    CGSize constraintSize = CGSizeMake(280.0f, MAXFLOAT);
    CGSize labelSize = [cellText sizeWithFont:cellFont constrainedToSize:constraintSize lineBreakMode:UILineBreakModeWordWrap];

    return labelSize.height + 20;
}

我在返回的单元格高度上加了 20，因为我喜欢在文本周围留一点缓冲区.

I added 20 to my returned cell height because I like a little buffer around my text.