Question

如何在Swift 4中为SKLabelNode下划线？

我进行了很多搜索，但似乎没有选择这样做。

import SpriteKit

class GameScene: SKScene {

    let mylabel = SKLabelNode(fontNamed:"ChalkboardSE-Regular")

    override func didMove(to view: SKView) {
        mylabel.text = "Hello World"
        mylabel.position = CGPoint(x: UIScreen.main.bounds.width/2 , y: UIScreen.main.bounds.height/2)
        addChild(mylabel)
    }
}

Answer 1

有了从KnightOfDragon收到的链接，我终于可以使它工作了。（感谢KnightOfDragon！），但仅在iOS 11及更高版本中。在iOS 9及更高版本中还有其他使用方式吗？

这是实际代码：

import SpriteKit

class GameScene: SKScene {

    let mylabel = SKLabelNode(fontNamed:"ChalkboardSE-Regular")

    override func didMove(to view: SKView) {
        if #available(iOS 11.0, *) {
            mylabel.attributedText = getUnderlinedAttributedString(string: "Hello World")
        } else {
            mylabel.text = "Hello World"
        }
        mylabel.position = CGPoint(x: UIScreen.main.bounds.width/2 , y: UIScreen.main.bounds.height/2)
        addChild(mylabel)
    }


    func getUnderlinedAttributedString(string: String) -> NSMutableAttributedString
    {
        let attributedString = NSMutableAttributedString.init(string: string)
        let stringRange = NSMakeRange(0, attributedString.length)

        attributedString.beginEditing()
        attributedString.addAttribute(NSAttributedString.Key.underlineStyle, value: 1, range: stringRange)
        attributedString.endEditing()

        return attributedString
    }
}

如何在Swift中为SKLabelNode加上下划线？

1 个答案: