Practical Dynamic Type, Part 3: Attributed Strings

dynamictype3-snippet3.swift

@objc func uiContentSizeCategoryChanged() {
  
  /// Only continue if the `UILabel` has non-nil attributed text.
  guard let attributedString = display.attributedText else {
      return
  }

  /// Get the NSRange of the plaintext string.
  let fullTextRange = NSRange(location: 0, length: attributedString.string.count)

  /// Enumerate over each of the sub attributed strings.
  mutableText.enumerateAttributes(in: fullTextRange, options: []) { attributes, range, stop in
    print(attributes[.font])
  }

  /// Optional(<UICTFont: 0x7f8a26429720> font-family: ".SFUIText-Bold"; font-weight: bold; font-style: normal; font-size: 18.00pt)
  /// Optional(<UICTFont: 0x7f8a26403c80> font-family: ".SFUIText-Light"; font-weight: normal; font-style: normal; font-size: 8.00pt)
  /// Optional(<UICTFont: 0x7f8a26429c30> font-family: "NeutrafaceSlabText-Demi"; font-weight: bold; font-style: normal; font-size: 18.00pt)
  /// Optional(<UICTFont: 0x7f8a2642aa30> font-family: ".SFUIText-Heavy"; font-weight: bold; font-style: normal; font-size: 48.00pt)
}