Question

我有两个时间间隔基本上我想转换找出它们之间的区别这是我的代码。但是，它不起作用

 func dateformatter(date:Double) -> String {

    let timeElapsed:TimeInterval = TimeInterval(Int(date))
    let timeNow:TimeInterval = TimeInterval(integerLiteral: Int64(Date().timeIntervalSince1970*1000))

    let date2:Date = Date(timeIntervalSince1970: timeElapsed )
    let date1:Date = Date(timeIntervalSince1970: timeNow )

    let calender:Calendar = Calendar.current
    let components:DateComponents = calender.dateComponents([.year, .month, .day, .hour, .minute], from: date1, to: date2)
    var returnString:String = ""
    print(components.second)
    if components.second! < 60 {
        returnString = "Just Now"
    }else if components.minute! >= 1{
        returnString = String(describing: components.minute) + " min ago"
    }else if components.hour! >= 1{
        returnString = String(describing: components.hour) + " hour ago"
    }else if components.day! >= 1{
        returnString = String(describing: components.day) + " days ago"
    }else if components.month! >= 1{
        returnString = String(describing: components.month)+" month ago"
    }else if components.year! >= 1 {
        returnString = String(describing: components.year)+" year ago"
    }
    return returnString
}

Answer 1

您无需在函数开头进行所有转换。 Date(timeIntervalSince1970:)接受NSTimeInterval，但typealias仅为double。

此外，由于您对if的第一次seconds语句检查，您需要将.seconds包含在组件参数列表中。

您可以执行以下操作：

func dateformatter(date: Double) -> String {

    let date1:Date = Date() // Same you did before with timeNow variable
    let date2: Date = Date(timeIntervalSince1970: date)

    let calender:Calendar = Calendar.current
    let components: DateComponents = calender.dateComponents([.year, .month, .day, .hour, .minute, .second], from: date1, to: date2)
    print(components)
    var returnString:String = ""
    print(components.second)
    if components.second! < 60 {
        returnString = "Just Now"
    }else if components.minute! >= 1{
        returnString = String(describing: components.minute) + " min ago"
    }else if components.hour! >= 1{
        returnString = String(describing: components.hour) + " hour ago"
    }else if components.day! >= 1{
        returnString = String(describing: components.day) + " days ago"
    }else if components.month! >= 1{
        returnString = String(describing: components.month)+" month ago"
    }else if components.year! >= 1 {
        returnString = String(describing: components.year)+" year ago"
    }
    return returnString
}

Answer 2

只是一个提示，你的逻辑中有一个错误，使得函数在每种情况下都返回“Just now”。所以这是修改后的代码：

func timeElapsed(date: Date) -> String {

        let date1:Date = date
        let date2: Date = Date() // Same you did before with timeNow variable

        let calender:Calendar = Calendar.current
        let components: DateComponents = calender.dateComponents([.year, .month, .day, .hour, .minute, .second], from: date1, to: date2)
        print(components)
        var returnString:String = ""

        print(components.second!)

        if components.second! < 60 {
            returnString = "Just Now"
        }

        if components.minute! > 1{
            returnString = String(describing: components.minute!) + " mins ago"
        }
        else if components.minute! == 1 {

            returnString = "A minute ago"
        }

        if components.hour! > 1{
            returnString = String(describing: components.hour!) + " hours ago"
        }
        else if components.hour == 1 {

            returnString = "An hour ago"
        }

        if components.day! > 1{
            returnString = String(describing: components.day!) + " days ago"
        }
        else if components.day! == 1 {

            returnString = "Yesterday"
        }

        if components.month! > 1{
            returnString = String(describing: components.month!)+" months ago"
        }
        else if components.month! == 1 {

            returnString = "A month ago"
        }

        if components.year! > 1 {
            returnString = String(describing: components.year!)+" years ago"
        }
        else if components.year! == 1 {

            returnString = "A year ago"
        }

        return returnString
    }

两个时间间隔ios组件swift 3之间的差异

2 个答案: