两个时间间隔ios组件swift 3之间的差异

Question

我有两个时间间隔基本上我想转换找出它们之间的差异这是我的代码。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

无需在函数开头进行所有转换。Date(timeIntervalSince1970:)接受NSTimeInterval，但是，它只是一个typealiasfor double。

另外，因为您的第一个if语句检查seconds需要包含.seconds到组件参数列表中。

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
}