[ios]テキストを下寄せかつ、複数のフォントを混ぜて表示する

UITextField-attributedText-Tips.md

//  下寄せ
valueField.contentVerticalAlignment = .bottom

let stringAttributes1: [NSAttributedString.Key: Any] = [
    .foregroundColor: UIColor.black,
    .font: UIFont.systemFont(ofSize: 30.0)
]
let string1 = NSAttributedString(string: v, attributes: stringAttributes1)

let stringAttributes2: [NSAttributedString.Key: Any] = [
    .foregroundColor: UIColor.black,
    .font: UIFont.systemFont(ofSize: 17.0)
]
let string2 = NSAttributedString(string: unit, attributes: stringAttributes2)

valueField.attributedText = NSMutableAttributedString.create(strings: [string1, string2])

extension NSMutableAttributedString {

    static func create(strings: [NSAttributedString]) -> NSMutableAttributedString {
        let mas = NSMutableAttributedString()
        strings.forEach({ string  in mas.append(string) })
        return mas
    }
}