Swift

Question

我正在使用 timeIntervalSinceNow 函数来确定特定时间与当前时间之间的时差。我已经使用 "ZeroFormattingBehaviour" 到 .DropAll 来删除日期中的任何 0。但是我想做到这一点，所以差异不包括秒数差异。例如，如果差异是 2 天、5 小时、25 分钟和 40 秒，我希望它只显示 2 天、5 小时、25 分钟。（例如不包括秒部分）有什么办法吗？

代码如下：

    let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
    let managedContext = appDelegate.managedObjectContext
    let fetchRequest = NSFetchRequest(entityName: "Values")
    let sortDescriptor = NSSortDescriptor(key: "time", ascending: true)
    fetchRequest.sortDescriptors = [sortDescriptor]

    do {
        let results = try managedContext.executeFetchRequest(fetchRequest)
            Values = results as! [NSManagedObject]

        for result in results as! [NSManagedObject] {

            times = result.valueForKey("time") as! String

            let timeFormatter = NSDateFormatter()
            timeFormatter.locale = NSLocale.currentLocale()
            timeFormatter.dateFormat = "HH:mm dd/MM/yy"
            let otherTime = timeFormatter.dateFromString(times)

            let dateComponentsFormatter = NSDateComponentsFormatter()
            dateComponentsFormatter.unitsStyle = NSDateComponentsFormatterUnitsStyle.Abbreviated
            dateComponentsFormatter.zeroFormattingBehavior = NSDateComponentsFormatterZeroFormattingBehavior.DropAll
            let difference = otherTime?.timeIntervalSinceNow
            let diffAbs = abs(difference!)
            let stringDiff = dateComponentsFormatter.stringFromTimeInterval(diffAbs)
            // "\n" skips a line in the text
            TimerLabel.text = stringDiff!

        }

    } catch let error as NSError {
        TimerLabel.text = "There seems to be an error. Please try again later"
        print("Could not fetch \(error), \(error.userInfo)")
    }

谢谢

Answer 1

指定要显示的单位

dateComponentsFormatter.allowedUnits = [.Day, .Hour, .Minute]

Swift - timeIntervalSinceNow 只想显示分钟（不包括秒部分）

Swift - timeIntervalSinceNow Only want to show up to minutes (excluding the seconds part)

time

nsdate

nsdatecomponents

nstimeinterval