iOS Formatting Text

Formatting Text

NSAttributedString

func toolTipAttributedText() -> NSAttributedString {
    let toolTipString = NSMutableAttributedString(string: "Search by ")// and/or user.\nE.g., \"linux user:torvalds\""

    let boldAttribute = [NSFontAttributeName: UIFont.boldSystemFont(ofSize: toolTipLabel.font.pointSize)]
    let keywordString = NSMutableAttributedString(string: "keyword", attributes: boldAttribute)
    let userString = NSMutableAttributedString(string: "user", attributes: boldAttribute)

    let monospaceAttribute = [NSFontAttributeName: UIFont(name: "Courier-Bold", size: toolTipLabel.font.pointSize)]
    let exampleString = NSMutableAttributedString(string: "linux user:torvalds", attributes: monospaceAttribute)


    toolTipString.append(keywordString)
    toolTipString.append(NSMutableAttributedString(string: " and/or "))
    toolTipString.append(userString)
    toolTipString.append(NSMutableAttributedString(string: ".\nExample: "))
    toolTipString.append(exampleString)

    let paragraphStyle = NSMutableParagraphStyle()
    paragraphStyle.lineSpacing = 5
    paragraphStyle.alignment = .center

    toolTipString.addAttribute(NSParagraphStyleAttributeName, value: paragraphStyle, range: NSMakeRange(0, toolTipString.length))

    return toolTipString
}

References

• How to make an Attributed String in Swift - StackOverflow