NSAttributedString on UIButton

Question

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

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

Now, in my UIButton, say button, How to set this title "Call to 2222555 number" And i need to change the size according to device, so I have to do it by coding.

Update

I need like following image.

And need to change the size of the title by coding. Above screenshot is from iPhone 7, In iPhone 5 it become bigger and in iPad it become smaller, so i have to set the size of the title according to requirement.

Any help will be appreciable.

Thanks

Answer 1

I found the Answer by struggling few days. And it is quite easy.

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)

And its Working perfectly as expected.