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Swift NSDate utils: Get date by adding / subtracting days from now, date at midnight, ...
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| // | |
| // NSDate+Utils.swift | |
| // Swift Extensions | |
| // | |
| import Foundation | |
| import UIKit | |
| extension NSDate { | |
| class func dateByAddingDays(days: Int) -> NSDate { | |
| return self.days(days) | |
| } | |
| class func dateBySubstractingDays(days: Int) -> NSDate { | |
| return NSDate.days(-days) | |
| } | |
| } | |
| extension NSDate { | |
| class func days(days:Int) -> NSDate { | |
| return NSCalendar.currentCalendar().dateByAddingUnit( [.Day], value: days, toDate: NSDate(), options: [] )! | |
| } | |
| } | |
| extension NSDate { | |
| class func dateAtPrevMidnight() -> NSDate? { | |
| let date = NSDate.dateBySubstractingDays(1) | |
| let calendar = NSCalendar.currentCalendar() | |
| let components = calendar.components([.Year, .Month, .Day, .Hour, .Minute, .Second], fromDate: date) | |
| // Specify date components | |
| let dateComponents = NSDateComponents() | |
| dateComponents.year = components.year | |
| dateComponents.month = components.month | |
| dateComponents.day = components.day | |
| dateComponents.timeZone = NSTimeZone(name: "UTC") | |
| dateComponents.hour = 0 | |
| dateComponents.minute = 0 | |
| dateComponents.second = 0 | |
| // Create date from components | |
| let userCalendar = NSCalendar.currentCalendar() | |
| let dateTime = userCalendar.dateFromComponents(dateComponents) | |
| return dateTime | |
| } | |
| } |
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