ios - 如何为时间间隔创建属性字符串，如 iOS 10 上的事件应用程序中所见的 3 小时 32 分钟？

Question

<分区>

Answer 1

UILabel 上有一个 .attributedText 属性。您需要像这样创建文本:

    let hoursNumber = 6
    let hoursUnit = "h"
    let minutesNumber = 40
    let minutesUnit = "m"
    let numberFont = [ NSFontAttributeName: UIFont.systemFont(ofSize: 20) ]
    let unitFont = [ NSFontAttributeName: UIFont.systemFont(ofSize: 14) ]
    let timeString = NSMutableAttributedString(string: "\(hoursNumber)", attributes: numberFont)
    timeString.append(NSAttributedString(string: hoursUnit, attributes: unitFont))
    timeString.append(NSAttributedString(string: "\(minutesNumber)", attributes: numberFont))
    timeString.append((NSAttributedString(string: minutesUnit, attributes: unitFont)))

然后设置你的timeLabel.attributedText = timeString

编辑 ... 挑剔，挑剔 ;)

let formatter = DateComponentsFormatter()
    formatter.allowedUnits = [.hour, .minute]
    formatter.unitsStyle = .abbreviated
    formatter.zeroFormattingBehavior = .pad
    let unitFont = [NSFontAttributeName: UIFont.systemFont(ofSize: 14)]
    let numberFont = [NSFontAttributeName: UIFont.systemFont(ofSize: 22)]
    let time = formatter.string(from: 300)
    let timeString = NSMutableAttributedString()
    for letter in time!.unicodeScalars {
        let timeLetter : NSAttributedString
        if CharacterSet.decimalDigits.contains(letter) {
            timeLetter = NSAttributedString(string: "\(letter)", attributes: numberFont)
        } else {
            timeLetter = NSAttributedString(string: "\(letter)", attributes: unitFont)
        }
        timeString.append(timeLetter)
    }