我从服务器获得这种格式的日期:
1 day 5 hours 10 minutes 20 seconds
现在,我想检测一下,自那个日期以来经过了多少时间?例如2016-05-27 17:33:43+0400
。
我该怎么办?我知道如何从时间戳计算这个,但不知道如何将其转换为时间戳。
任何人都可以帮我吗?
例如:
将此1464370423
转换为var theList = new[]{-1,0,1}.Select(x=>betttime1.AddSeconds(x)).ToList()
此
或许还有另一种解决方案。我只想计算自那时起经过的时间
答案 0 :(得分:2)
您可以使用NSDateComponents格式化程序来获取两个日期之间的相对时间。关于日期字符串格式,您需要使用xx
作为时区部分。
let dateStr = "2016-05-27 17:33:43+0400"
let formatter = NSDateFormatter()
formatter.dateFormat = "yyyy-MM-dd HH:mm:ssxx"
formatter.calendar = NSCalendar(calendarIdentifier: NSCalendarIdentifierISO8601)
formatter.locale = NSLocale(localeIdentifier: "en_US_POSIX")
if let date = formatter.dateFromString(dateStr) {
print(date) // "2016-05-27 13:33:00 +0000\n" -4hs
let dateComponentsFormatter = NSDateComponentsFormatter()
dateComponentsFormatter.allowedUnits = [.Day,.Hour,.Minute,.Second]
dateComponentsFormatter.unitsStyle = .Full
print(dateComponentsFormatter.stringFromDate(date, toDate: NSDate()) ?? "") // 6 days, 17 hours, 51 minutes, 29 seconds
}
答案 1 :(得分:1)
给定输入字符串,您可以将其转换为日期,然后使用以下内容将其转换为NSTimeInterval
当前时间。
let inputDate = "2016-05-27 17:33:43+0400"
let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ssZZZZZ"
if let aDate = dateFormatter.dateFromString(inputDate) {
let timeInterval = aDate.timeIntervalSinceNow
let dateComponentsFormatter = NSDateComponentsFormatter()
if let dateString = dateComponentsFormatter.stringFromTimeInterval(abs(timeInterval)) {
print ("Elapsed time=\(dateString)")
}
}
输出:
经过时间= 6d 17:51:52
您可以使用aDate.timeIntervalSince1970
答案 2 :(得分:0)
我建议这可以帮助您:How to get the current time as datetime
您可以使用服务器时间和当前时间来获取当前时间并计算差异。
let date = NSDate()
let calendar = NSCalendar.currentCalendar()
let components = calendar.components(.CalendarUnitHour | .CalendarUnitMinute, fromDate: date)
let hour = components.hour
let minutes = components.minute
希望它有所帮助。
答案 3 :(得分:0)
这会告诉你
“多少时间”
自事件发生以来。
1.7
1.9
2.7
2.9
let date = Date()
let howManyTimePassed = date.timeIntervalSinceNow
是TimeInterval
的{{1}},这意味着它是另一种说typealias
的方式。 double
的值代表秒数。
答案 4 :(得分:0)
在 Swift 5.1 中尝试该课程:
open class MyDateClass: NSObject {
private var result:MyDateTime!
init(dateStr: String, inputFormat: String) {
let formatter = DateFormatter()
formatter.dateFormat = inputFormat //"yyyy-MM-dd HH:mm:ss"
formatter.calendar = Calendar(identifier: .gregorian)
formatter.locale = Locale(identifier: "en_US_POSIX")
if let date = formatter.date(from: dateStr) {
let dateComponentsFormatter = DateComponentsFormatter()
dateComponentsFormatter.allowedUnits = [.year,.month,.day,.hour,.minute,.second]
dateComponentsFormatter.unitsStyle = .full
let strFromat = dateComponentsFormatter.string(from: date, to: Date()) ?? ""
var trimmedString = strFromat.replacingOccurrences(of: " ", with: "")
trimmedString = trimmedString.replacingOccurrences(of: "years", with: "")
trimmedString = trimmedString.replacingOccurrences(of: "months", with: "")
trimmedString = trimmedString.replacingOccurrences(of: "days", with: "")
trimmedString = trimmedString.replacingOccurrences(of: "hours", with: "")
trimmedString = trimmedString.replacingOccurrences(of: "minutes", with: "")
trimmedString = trimmedString.replacingOccurrences(of: "seconds", with: "")
let arr = trimmedString.split(separator: ",")
let result = MyDateTime(year: Int(arr[0]), month: Int(arr[1]), day: Int(arr[2]), hour: Int(arr[3]), minute: Int(arr[4]), second: Int(arr[5]))
self.result = result
}
}
func getDateTime() -> MyDateTime {
return result
}
}
public struct MyDateTime {
var year:Int?
var month:Int?
var day:Int?
var hour:Int?
var minute:Int?
var second:Int?
}
该类的工作方式如下:
let myClass = MyDateClass(dateStr: "2016-05-27 17:33:43", inputFormat: "yyyy-MM-dd HH:mm:ss")
let time = myClass.getDateTime()
现在您可以根据需要显示时间了。