Days between two dates and store in variable - swift

Question

How can i store the calculated days between two dates in a variable so i can store the "days" in CloudKit
My code are (working to calculate days between dates):
let calendar = NSCalendar.currentCalendar()
let components = calendar.components([.Day], fromDate: datepicked, toDate: enddate, options: [])
print("DAYS LEFT :" , components)
Result are :
DAYS LEFT : <NSDateComponents: 0x7fd399ccb890>
Day: 1095

Answer 1

⌥-click on the variable components and then on NSDateComponents in the popup view.
In the documentation you can see that there is a property day to get the value of the .Day component.
var day: Int
So simply write
let day = components.day

Answer 2

I here have a piece of code which calculates the hours between two times in Objective-C. I'm sure you can rewrite this to make it days.
- (void)updateTimer {
NSDateFormatter *df = [[NSDateFormatter alloc] init];
[df setDateFormat:#"dd-MM-yyyy HH:mm:ss"];
/* instead of conceptDate the date of the started and stopped time will be used when the database is edited so
date is nog a seperate column but is included in the colums start and stop to display working times that exceed
the 00.00 timestamp or take multiple days (for somewhat reason)*/
NSDate *date1 = [df dateFromString:[NSString stringWithFormat:#"%# %#", [self conceptDate], startedTime]];
NSDate *date2 = [df dateFromString:[NSString stringWithFormat:#"%# %#", [self conceptDate], [self getCurrentTime]]];
NSTimeInterval interval = [date2 timeIntervalSinceDate:date1];
if( interval < 0 ) {
interval = [date1 timeIntervalSinceDate:date2];
}
int hours = (int)interval / 3600; // integer division to get the hours part
int minutes = (interval - (hours*3600)) / 60; // interval minus hours part (in seconds) divided by 60 yields minutes
int seconds = (interval - (hours*3600) - (minutes*60)); // interval minus hours part (in seconds) divided by 60 yields minutes
NSString *timeDiff = [NSString stringWithFormat:#"%02d:%02d:%02d", hours, minutes, seconds];
_workingTime.text = [NSString stringWithFormat:#"%#",timeDiff];
}
I hope this helps. Currently the time difference is stored in _workingTime object but can of course be stored in another string variable.

Answer 3

If you want to get days between two days then you should try this.
func daysFrom(FromDate:NSDate,ToDate:NSDate) -> Int{
return NSCalendar.currentCalendar().components(NSCalendarUnit.Calendar.exclusiveOr(NSCalendarUnit.Day), fromDate: date, toDate: ToDate, options: NSCalendarOptions.WrapComponents).day
}

Answer 4

Swift 4
func days(from:Date,to:Date) -> Int {
return Calendar.current.dateComponents([.day], from: from, to: to).day!
}