斯威夫特3日历

Question

我刚刚决定将我的swift 2.0代码转换为3.0，但我遇到了Calendar的问题。在swift 2.0中，我这样做是为了计算两个日期之间的差异，但它在Swift 3.0上不再起作用了。我能做什么？感谢

let from = dateArray[indexPath.row]
        let now = NSDate()
        let components : NSCalendarUnit = [.Second, .Minute, .Hour, .Day, .WeekOfMonth]
        let difference = NSCalendar.currentCalendar().components(components, fromDate: from!, toDate: now, options: [])

Answer 1

原因是很多语法更改，然后有一个函数调用 您应该使用的.compare：

let from = dateArray[indexPath.row]
let now = NSDate()
let components : NSCalendar.Unit = [.second, .minute, .hour, .day, .weekOfMonth]
let difference = NSCalendar.current.compare(from, to: now as Date, toGranularity: .day)

将toGranularity更改为您想要的值。