How do I make an attributed string using Swift?

Question

I am trying to make a simple Coffee Calculator. I need to display the amount of coffee in grams. The \"g\" symbol for grams needs to be attached to my UILabel that I am usin

Answer 1

func decorateText(sub:String, des:String)->NSAttributedString{
    let textAttributesOne = [NSAttributedStringKey.foregroundColor: UIColor.darkText, NSAttributedStringKey.font: UIFont(name: "PTSans-Bold", size: 17.0)!]
    let textAttributesTwo = [NSAttributedStringKey.foregroundColor: UIColor.black, NSAttributedStringKey.font: UIFont(name: "PTSans-Regular", size: 14.0)!]

    let textPartOne = NSMutableAttributedString(string: sub, attributes: textAttributesOne)
    let textPartTwo = NSMutableAttributedString(string: des, attributes: textAttributesTwo)

    let textCombination = NSMutableAttributedString()
    textCombination.append(textPartOne)
    textCombination.append(textPartTwo)
    return textCombination
}

//Implementation

cell.lblFrom.attributedText = decorateText(sub: sender!, des: " - \(convertDateFormatShort3(myDateString: datetime!))")

Answer 2

It will be really easy to solve your problem with the library I created. It is called Atributika.

let calculatedCoffee: Int = 768
let g = Style("g").font(.boldSystemFont(ofSize: 12)).foregroundColor(.red)
let all = Style.font(.systemFont(ofSize: 12))

let str = "\(calculatedCoffee)<g>g</g>".style(tags: g)
    .styleAll(all)
    .attributedString

label.attributedText = str

You can find it here https://github.com/psharanda/Atributika

Answer 3

 let attrString = NSAttributedString (
            string: "title-title-title",
            attributes: [NSAttributedStringKey.foregroundColor: UIColor.black])

Answer 4

extension String {
//MARK: Getting customized string
struct StringAttribute {
    var fontName = "HelveticaNeue-Bold"
    var fontSize: CGFloat?
    var initialIndexOftheText = 0
    var lastIndexOftheText: Int?
    var textColor: UIColor = .black
    var backGroundColor: UIColor = .clear
    var underLineStyle: NSUnderlineStyle = .styleNone
    var textShadow: TextShadow = TextShadow()

    var fontOfText: UIFont {
        if let font = UIFont(name: fontName, size: fontSize!) {
            return font
        } else {
            return UIFont(name: "HelveticaNeue-Bold", size: fontSize!)!
        }
    }

    struct TextShadow {
        var shadowBlurRadius = 0
        var shadowOffsetSize = CGSize(width: 0, height: 0)
        var shadowColor: UIColor = .clear
    }
}
func getFontifiedText(partOfTheStringNeedToConvert partTexts: [StringAttribute]) -> NSAttributedString {
    let fontChangedtext = NSMutableAttributedString(string: self, attributes: [NSFontAttributeName: UIFont(name: "HelveticaNeue-Bold", size: (partTexts.first?.fontSize)!)!])
    for eachPartText in partTexts {
        let lastIndex = eachPartText.lastIndexOftheText ?? self.count
        let attrs = [NSFontAttributeName : eachPartText.fontOfText, NSForegroundColorAttributeName: eachPartText.textColor, NSBackgroundColorAttributeName: eachPartText.backGroundColor, NSUnderlineStyleAttributeName: eachPartText.underLineStyle, NSShadowAttributeName: eachPartText.textShadow ] as [String : Any]
        let range = NSRange(location: eachPartText.initialIndexOftheText, length: lastIndex - eachPartText.initialIndexOftheText)
        fontChangedtext.addAttributes(attrs, range: range)
    }
    return fontChangedtext
}

}

//Use it like below

    let someAttributedText = "Some   Text".getFontifiedText(partOfTheStringNeedToConvert: <#T##[String.StringAttribute]#>)

Answer 5

I created an online tool that is going to solve your problem! You can write your string and apply styles graphically and the tool gives you objective-c and swift code to generate that string.

Also is open source so feel free to extend it and send PRs.

Transformer Tool

Github

Answer 6

For me above solutions didn't work when setting a specific color or property.

This did work:

let attributes = [
    NSFontAttributeName : UIFont(name: "Helvetica Neue", size: 12.0)!,
    NSUnderlineStyleAttributeName : 1,
    NSForegroundColorAttributeName : UIColor.darkGrayColor(),
    NSTextEffectAttributeName : NSTextEffectLetterpressStyle,
    NSStrokeWidthAttributeName : 3.0]

var atriString = NSAttributedString(string: "My Attributed String", attributes: attributes)