Creating a Future Date in Swift with Nsdate()

Creating a future date in swift with NSDate()

how it looks to be with

swift 4.x

let date = Date()
var components = DateComponents()
components.setValue(1, for: .month)
let expirationDate = Calendar.current.date(byAdding: components, to: date)

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swift 2.0

let components: NSDateComponents = NSDateComponents()
components.setValue(1, forComponent: NSCalendarUnit.Month);
let date: NSDate = NSDate()
let expirationDate = NSCalendar.currentCalendar().dateByAddingComponents(components, toDate: date, options: NSCalendarOptions(rawValue: 0))

---

swift 1.2

var components = NSDateComponents()
components.setValue(1, forComponent: NSCalendarUnit.CalendarUnitMonth);
let date: NSDate = NSDate()
var expirationDate = NSCalendar.currentCalendar().dateByAddingComponents(components, toDate: date, options: NSCalendarOptions(0))

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Objective-C

NSDate *date = [NSDate new];  
NSDateComponents *components = [NSDateComponents new];
components.month = 1;
NSDate *expirationDate = [[NSCalendar currentCalendar] dateByAddingComponents:components toDate:date options:0];

NSDate - Setting a future date

That should be,

NSTimeInterval MY_EXTRA_TIME = 10; // 10 Seconds
NSDate *futureDate = [[NSDate date] dateByAddingTimeInterval:MY_EXTRA_TIME];

Check if date is before current date (Swift)

I find the earlierDate method.

if date1.earlierDate(date2).isEqualToDate(date1)  {
     print("date1 is earlier than date2")
}

You also have the laterDate method.

Swift 3 to swift 5:

if date1 < date2  {
     print("date1 is earlier than date2")
}

All dates between two Date objects (Swift)

Just add one day unit to the date until it reaches
the current date (Swift 2 code):

var date = startDateNSDate // first date
let endDate = NSDate() // last date

// Formatter for printing the date, adjust it according to your needs:
let fmt = NSDateFormatter()
fmt.dateFormat = "dd/MM/yyyy"

// While date <= endDate ...
while date.compare(endDate) != .OrderedDescending {
    print(fmt.stringFromDate(date))
    // Advance by one day:
    date = calendar.dateByAddingUnit(.Day, value: 1, toDate: date, options: [])!
}

Update for Swift 3:

var date = startDate // first date
let endDate = Date() // last date

// Formatter for printing the date, adjust it according to your needs:
let fmt = DateFormatter()
fmt.dateFormat = "dd/MM/yyyy"

while date <= endDate {
    print(fmt.string(from: date))
    date = Calendar.current.date(byAdding: .day, value: 1, to: date)!
}

NSDate beginning of day and end of day

You are missing NSDayCalendarUnit in

NSDateComponents *components = [cal components:( NSMonthCalendarUnit | NSYearCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit ) fromDate:date];

How to get previous and next month in calendar-Swift

Try like this.

To get date of next month.

Swift 3 and Swift 4

let nextMonth = Calendar.current.date(byAdding: .month, value: 1, to: Date())

Swift 2.3 or lower

let nextMonth = NSCalendar.currentCalendar().dateByAddingUnit(.Month, value: 1, toDate: NSDate(), options: [])

To get date of previous month.

Swift 3

let previousMonth = Calendar.current.date(byAdding: .month, value: -1, to: Date())

Swift 2.3 or lower

let previousMonth = NSCalendar.currentCalendar().dateByAddingUnit(.Month, value: -1, toDate: NSDate(), options: [])

Note: To get date of next and previous month I have used todays date, you can use date from which you want next and previous month date, just change NSDate() with your NSDate object.

Edit: For continues traveling of next and previous months you need to store one date object currentDate and when you try to get next and previous month use that date object and update it.

For next month.

let currentDate = NSCalendar.currentCalendar().dateByAddingUnit(.Month, value: 1, toDate: currentDate, options: [])

For previous month.

let currentDate = NSCalendar.currentCalendar().dateByAddingUnit(.Month, value: -1, toDate: currentDate, options: [])

You can also use extension that will make thing easy.

Swift 3

extension Date {
    func getNextMonth() -> Date? {
        return Calendar.current.date(byAdding: .month, value: 1, to: self)
    }

    func getPreviousMonth() -> Date? {
        return Calendar.current.date(byAdding: .month, value: -1, to: self)
    }
}

Swift 2.3 or lower

extension NSDate {
    func getNextMonth() -> NSDate?{
        return NSCalendar.currentCalendar().dateByAddingUnit(.Month, value: 1, toDate: self, options: [])
    }

    func getPreviousMonth() -> NSDate?{
        return NSCalendar.currentCalendar().dateByAddingUnit(.Month, value: -1, toDate: self, options: [])
    }
}

Now just get date from currentDate.

currentDate = currentDate.getNextMonth()
currentDate = currentDate.getPreviousMonth()

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