how to get start and end time of today's date in ios? [duplicate]

问题

I am getting current date and time by using this code

    let today: NSDate = NSDate()
    let dateFormatter: NSDateFormatter = NSDateFormatter()
    dateFormatter.timeStyle = NSDateFormatterStyle.MediumStyle
    dateFormatter.dateFormat = "yyyy-MM-dd hh:mm:ss"
    dateFormatter.timeZone = NSTimeZone(abbreviation: "SGT");
    print(dateFormatter.stringFromDate(today))

but i want to get start time and end time of today’s date

example : 12-09-2016 00:00:00 AND 12-09-2016 23:59:59

How to get start and end time of current date?

回答1:

You can use startOfDayForDate to get today's midnight date and then get end time from that date.

//For Start Date
let calendar = NSCalendar.currentCalendar()
calendar.timeZone = NSTimeZone(abbreviation: "UTC")! //OR NSTimeZone.localTimeZone()
let dateAtMidnight = calendar.startOfDayForDate(NSDate())

//For End Date
let components = NSDateComponents()
components.day = 1
components.second = -1
let dateAtEnd = calendar.dateByAddingComponents(components, toDate: startOfDay, options: NSCalendarOptions())
print(dateAtMidnight)
print(dateAtEnd)

Edit: Convert date to string

let dateFormatter = NSDateFormatter()
dateFormatter.timeZone = NSTimeZone (abbreviation: "UTC")! // OR NSTimeZone.localTimeZone()
dateFormatter.dateFormat = "dd-MM-yyyy HH:mm:ss"
let startDateStr = dateFormatter.stringFromDate(dateAtMidnight)
let endDateStr = dateFormatter.stringFromDate(dateAtEnd)
print(startDateStr)
print(endDateStr)

来源：https://stackoverflow.com/questions/39449743/how-to-get-start-and-end-time-of-todays-date-in-ios

标签

ios

swift

datetime

nsdate

nsdateformatter