Swift中的下划线按钮文字 [英] Underline button text in Swift

问题描述

我有UIButton.在界面构建器中，我将其标题设置为已归因".如何在Swift的代码中使标题加下划线?

I have UIButton. In interface builder I set its title to be 'Attributed'. How can I make its title to be underlined from code in Swift?

@IBOutlet weak var myBtn: UIButton!

我创建了一个在此按钮的touchUpInside事件上调用的函数:

I created a function called on the touchUpInside event of this button:

var attributedString = NSMutableAttributedString(string:"new text")
    var attrs = [
        NSFontAttributeName : UIFont.systemFontOfSize(19.0),
        NSForegroundColorAttributeName : UIColor.redColor()
    ]
    var gString = NSMutableAttributedString(string:"g", attributes:attrs)
    attributedString.appendAttributedString(gString)

    myBtn.titleLabel?.attributedText = attributedString;

但仍然没有结果.我还需要知道如何访问下划线属性.文字，大小和颜色保持不变.

But still no result. Also I need to know how to access the underline attribute. Text, size and color stay the same.

推荐答案

在这里，您已经对其进行了测试. (至少在xCode 7 Beta中有效)

Here you go, just tested it. (works in xCode 7 Beta at least)

@IBOutlet weak var yourButton: UIButton!

var attrs = [
NSFontAttributeName : UIFont.systemFontOfSize(19.0),
NSForegroundColorAttributeName : UIColor.redColor(),
NSUnderlineStyleAttributeName : 1]

var attributedString = NSMutableAttributedString(string:"")

override func viewDidLoad() {
  super.viewDidLoad()

  let buttonTitleStr = NSMutableAttributedString(string:"My Button", attributes:attrs)
  attributedString.appendAttributedString(buttonTitleStr)
  yourButton.setAttributedTitle(attributedString, forState: .Normal)
}

这篇关于Swift中的下划线按钮文字的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！