ios - 线高计算错误

Question

我正在编写一组属性来找出 UILabel 中存储的文本的高度。
对于纯文本行，这已完成，但我无法计算标题。
问题在于标题以大字母显示，并且长度是针对常规行计算的。

要计算的字符串:
代码如下:

    if let feed = self.datasource?.item(indexPath) as? Feed{
    let approximateWidthOfTitlePost = view.frame.width - 15 - 15
    let size = CGSize(width: approximateWidthOfTitlePost, height: 1000)
    let attributeShortContent = [NSAttributedStringKey.font: UIFont.systemFont(ofSize: 14)]

    let attributeTitle = [NSAttributedStringKey.font: UIFont.systemFont(ofSize: 16)]


    let estimatedFrameContent = NSString(string: feed.shortContentPost).boundingRect(with: size, options: .usesLineFragmentOrigin, attributes: attributeShortContent, context: nil)

    let estimatedFrameTitle = NSString(string: feed.titlePost).boundingRect(with: size, options: .usesLineFragmentOrigin, attributes: attributeTitle, context: nil)  

在estimatedFrameTitle.height中获取了错误的值
要显示大写字母，请使用 .uppercased()

Answer 1

You have just need to add .uppercased() in estimatedFrameTitle & estimatedFrameContent

       if let feed = self.datasource?.item(indexPath) as? Feed {
            let approximateWidthOfTitlePost = view.frame.width - 15 - 15
            let size = CGSize(width: approximateWidthOfTitlePost, height: 1000)

            let attributeShortContent = [NSAttributedStringKey.font: UIFont.systemFont(ofSize: 14)]
            let attributeTitle = [NSAttributedStringKey.font: UIFont.systemFont(ofSize: 16)]

            let estimatedFrameContent = NSString(string: feed.shortContentPost.uppercased()).boundingRect(with: size, options: .usesLineFragmentOrigin, attributes: attributeShortContent, context: nil)
            let estimatedFrameTitle = NSString(string: feed.titlePost.uppercased()).boundingRect(with: size, options: .usesLineFragmentOrigin, attributes: attributeTitle, context: nil)
        }