NSAttributedString 冻结 UITableView [英] NSAttributedString freeze UITableView

问题描述

使用 NSAttributedString 滚动时应用程序真的冻结(当我使用 NSString 时它工作正常)，所以我的方法是:

Application really freeze while scrolling with NSAttributedString (When I use NSString it works fine), so there my method:

- (void)setSubtitleForCell:(TTTableViewCell *)cell item:(TTPhotoPost *)item
{
    NSAttributedString *attributedString = [[NSAttributedString alloc] initWithData:
                                            [item.caption dataUsingEncoding:NSUnicodeStringEncoding]
                                                                            options:@{ NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType }
                                                                 documentAttributes:nil
                                                                              error:nil];

    [cell.descriptionLabel setAttributedText:attributedString];
}

有什么错误吗?或某种方式使 att.string 更快?

Any mistakes there? or some way to make att.string faster?

推荐答案

我建议从 HTML 异步创建一次 NSAttributedString，并将属性字符串存储在您的模型中.这样您就不必在每次重复使用单元格时执行 HTML -> 属性字符串转换，这在您滚动时经常发生.

I'd suggest creating the NSAttributedString from HTML once asynchronously, and storing the attributed string in your model. That way you won't have to do the HTML -> attributed string conversion on every cell reuse, which happens a lot when you're scrolling.

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