End Date zeigt Wrong

Question

möchte ich finden und Enddatum der Woche beginne ich Starttermin am Geting aber nicht richtig Enddatum der Woche

startDate = NSDate().startOfWeek(2) 
      print(startDate) 
      endDate = startDate.endOfWeek(3) 
      print(endDate) 

Ich erhalte dieses Startdatum finden -2016-07-04 Datum 06.30.00 0.000 und Ende - 5828963-12-20 00:00:00 +0000

extension NSDate { 
    func startOfWeek(weekday: Int?) -> NSDate? { 
     guard 
      let cal: NSCalendar = NSCalendar.currentCalendar(), 
      let comp: NSDateComponents = cal.components([.YearForWeekOfYear, .WeekOfYear], fromDate: self) else { return nil } 
     comp.to12pm() 
     cal.firstWeekday = weekday ?? 1 
     return cal.dateFromComponents(comp)! 
    } 

    func endOfWeek(weekday: Int) -> NSDate? { 
     guard 
      let cal: NSCalendar = NSCalendar.currentCalendar(), 
      let comp: NSDateComponents = cal.components([.WeekOfYear], fromDate: self) else { return nil } 
     comp.weekOfYear = 1 
     comp.day -= 1 
     comp.to12pm() 
     return cal.dateByAddingComponents(comp, toDate: self.startOfWeek(weekday)!, options: [])! 
    } 
} 
internal extension NSDateComponents { 
    func to12pm() { 
     self.hour = 12 
     self.minute = 0 
     self.second = 0 
    } 
} 

Answer 1

extension NSDate { 
    enum Weekday: Int { 
     case Sunday = 1, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday 
    } 
    func startOfWeek(firstWeekday: Weekday = .Sunday) -> NSDate? { 
     let calendar = NSCalendar.currentCalendar() 
     let dateComponents = calendar.components([.YearForWeekOfYear, .WeekOfYear], fromDate: self) 
     dateComponents.setTimeComponentsToNoon() 
     calendar.firstWeekday = firstWeekday.rawValue 
     return calendar.dateFromComponents(dateComponents) 
    } 
    func endOfWeek(firstWeekday: Weekday = .Sunday) -> NSDate? { 
     guard let startOfWeek = startOfWeek(firstWeekday) else { return nil } 
     let calendar = NSCalendar.currentCalendar() 
     let dateComponents = NSDateComponents() 
     dateComponents.weekOfYear = 1 
     dateComponents.day = -1 
     return calendar.dateByAddingComponents(dateComponents, toDate: startOfWeek, options: []) 
    } 
} 
internal extension NSDateComponents { 
    func setTimeComponentsToNoon() { 
     self.hour = 12 
     self.minute = 0 
     self.second = 0 
     self.nanosecond = 0 
    } 
} 

Testing:

if let startDate = NSDate().startOfWeek(.Monday) , 
    endDate = NSDate().endOfWeek(.Monday) { 
    print(startDate) // "2016-07-04 15:00:00 +0000\n" 
    print(endDate) // "2016-07-10 15:00:00 +0000\n" 
} 
if let startDate = NSDate().startOfWeek() , 
    endDate = NSDate().endOfWeek() { 
    print(startDate) // "2016-07-03 15:00:00 +0000\n" 
    print(endDate) // "2016-07-09 15:00:00 +0000\n" 
}