UIButton 上的 NSAttributedString

NSAttributedString on UIButton

let strNo = "2222555" // size 18, this should be bold

let remainingStr = "Call to" + "\(strNo)" + "Number" 

现在,在我的 UIButton 中,说按钮,如何设置这个标题 "Call to 2222555 number" 而且我需要根据设备更改大小,所以我必须通过编码来完成。

更新

我需要如下图。

并且需要通过编码改变标题的大小。以上截图来自iPhone 7,在iPhone 5中变大,在iPad中变小,所以我必须根据需要设置标题的大小。

任何帮助都将不胜感激。

谢谢

经过几天的努力,我找到了答案。而且很简单。

guard
            let font1 = UIFont(name: "HelveticaNeue-Bold", size: 22),
            let font2 = UIFont(name: "HelveticaNeue-Medium", size: 22)  else { return }

        let dict1:[String:Any] = [
            //            NSUnderlineStyleAttributeName:NSUnderlineStyle.styleSingle.rawValue,
            NSFontAttributeName:font2,
            NSParagraphStyleAttributeName:style,
            NSForegroundColorAttributeName: UIColor.white
        ]

        let dict2:[String:Any] = [
            //            NSUnderlineStyleAttributeName:NSUnderlineStyle.styleNone.rawValue,
            NSFontAttributeName:font1,
            NSParagraphStyleAttributeName:style,
            NSForegroundColorAttributeName: UIColor.white,
            //            NSFontAttributeName: UIFont.boldSystemFont(ofSize: 20)
        ]

        let dict3:[String:Any] = [
            //            NSUnderlineStyleAttributeName:NSUnderlineStyle.styleNone.rawValue,
            NSFontAttributeName:font2,
            NSParagraphStyleAttributeName:style,
            NSForegroundColorAttributeName: UIColor.white
        ]

        let dict4:[String:Any] = [
            //            NSUnderlineStyleAttributeName:NSUnderlineStyle.styleNone.rawValue,
            NSFontAttributeName:font1,
            NSParagraphStyleAttributeName:style,
            NSForegroundColorAttributeName: UIColor.white
        ]

        let attString = NSMutableAttributedString()
        attString.append(NSAttributedString(string: "Call to", attributes: dict1))
        attString.append(NSAttributedString(string: " 2222555 ", attributes: dict2))
        attString.append(NSAttributedString(string: " To Book Your Skip ", attributes: dict3))
        attString.append(NSAttributedString(string: "NOW", attributes: dict4))

        btnCall.setAttributedTitle(attString, for: .normal)

它的工作如预期般完美。