Swift: AttributedString 不同颜色的下划线

Question

我正在尝试为 AttributedString 中带下划线的文本提供不同的颜色。按照这个例子。

但是这段代码的结果：

        var attributedString = try AttributedString(markdown: self)
        if let rangeWord = self.slice(from: "[", to: "]") {
            let range = attributedString.range(of: rangeWord)!
            attributedString[range].underlineStyle = .single

            attributedString[range].foregroundColor = .white
            attributedString[range].underlineColor =  .green

        }

不是预期的

有解决办法吗？

Answer 1

同样尝试使用 NSAttributedString：

let labelString = "your label"
let textColor: UIColor = .black
let underLineColor: UIColor = .green
let underLineStyle = NSUnderlineStyle.single.rawValue

let labelAtributes:[NSAttributedString.Key : Any]  = [
    NSAttributedString.Key.foregroundColor: textColor,
    NSAttributedString.Key.underlineStyle: underLineStyle,
    NSAttributedString.Key.underlineColor: underLineColor
]

let underlineAttributedString = NSAttributedString(string: labelString,
                                                   attributes: labelAtributes)

label.attributedText = underlineAttributedString

Swift: AttributedString 不同颜色的下划线

Swift: AttributedString underline with different color

nsattributedstring

ios

swift

attributedstring