对齐 NSAttributed 文本中的图像和文本

Question

我需要水平对齐图像和文本并将该字符串分配给 UILabel。下面是我的代码：

let attachment = NSTextAttachment()
let text = "Current user."
attachment.image = UIImage(named: "icon-horizontal-line")                        
let attachmentString = NSAttributedString(attachment: attachment)
let mutableAttributedString = NSMutableAttributedString()
mutableAttributedString.append(attachmentString)                        
let string = NSMutableAttributedString(string: text, attributes: [:])
mutableAttributedString.append(string)
label.attributedText = mutableAttributedString

我的结果是这样的：

我希望图像和字符串都对齐类似于：----- 当前用户。

Answer 1

您需要设置附件的边界。这是您更新后的代码。

        let attachment = NSTextAttachment()
        let text = "Current user."
        let img = UIImage(named: "icon-horizontal-line")
        let font = UIFont.systemFont(ofSize: 18)
        attachment.image = img
        let mid = font.descender + font.capHeight
        attachment.bounds = CGRect(x: 0, y: font.descender - img!.size.height / 2 + mid + 2, width: img!.size.width, height: img!.size.height)
        let attachmentString = NSAttributedString(attachment: attachment)
        let mutableAttributedString = NSMutableAttributedString()
        mutableAttributedString.append(attachmentString)
        let string = NSMutableAttributedString(string: text, attributes: [:])
        mutableAttributedString.append(string)

        label.attributedText = mutableAttributedString

对齐 NSAttributed 文本中的图像和文本

Align the image and text in NSAttributed text

nsattributedstring

ios

swift