Minimum and maximum date in UIDatePicker - ios

Question

I want to get the minimum and maximum date from a date picker, but minimum date should be "- 18" of the current date and the maximum date should be "- 100" of current date.
Suppose current year is 2018 then I want minimum date 2000 and maximum date 1918.
What I have done so far is :
NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSDateComponents *components = [gregorian components:NSYearCalendarUnit fromDate:[NSDate date]];
NSInteger year = [components year];
int mindt = year - 18;
int maxdt = year -100;
// NSDate * MinDate = [components year] - 18;
// NSDate * MaxDate = [components year] - 100;
// self.datePicker.minimumDate = MinDate;
// self.datePicker.maximumDate = MaxDate;
but I cant get this integer to my date format..

Answer 1

Try this:
NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSDate *currentDate = [NSDate date];
NSDateComponents *comps = [[NSDateComponents alloc] init];
[comps setYear:-18];
NSDate *minDate = [gregorian dateByAddingComponents:comps toDate:currentDate options:0];
[comps setYear:-150];
NSDate *maxDate = [gregorian dateByAddingComponents:comps toDate:currentDate options:0];
[comps release];
self.datePicker.minimumDate = minDate;
self.datePicker.maximumDate = maxDate;
It may be easily translated to Swift 4.2:
let calendar = Calendar(identifier: .gregorian)
let currentDate = Date()
var components = DateComponents()
components.calendar = calendar
components.year = -18
components.month = 12
let maxDate = calendar.date(byAdding: components, to: currentDate)!
components.year = -150
let minDate = calendar.date(byAdding: components, to: currentDate)!
picker.minimumDate = minDate
picker.maximumDate = maxDate

Answer 2

Look at this for Swift version.
User negative value (-) to subtract and positive value to add date component.
1. Set minimum date
yourDatePicker.minimumDate = Calendar.current.date(byAdding: .year, value: -1, to: Date())
2. Set maximum date
yourDatePicker.maximumDate = Calendar.current.date(byAdding: .year, value: 1, to: Date())

Answer 3

Swift 5.1
extension UIDatePicker {
func set18YearValidation() {
let currentDate: Date = Date()
var calendar: Calendar = Calendar(identifier: Calendar.Identifier.gregorian)
calendar.timeZone = TimeZone(identifier: "UTC")!
var components: DateComponents = DateComponents()
components.calendar = calendar
components.year = -18
let maxDate: Date = calendar.date(byAdding: components, to: currentDate)!
components.year = -150
let minDate: Date = calendar.date(byAdding: components, to: currentDate)!
self.minimumDate = minDate
self.maximumDate = maxDate
} }

Answer 4

This is how it would look like in 2017 (Swift 3)
var components = DateComponents()
components.year = -100
let minDate = Calendar.current.date(byAdding: components, to: Date())
components.year = -18
let maxDate = Calendar.current.date(byAdding: components, to: Date())
datePicker.minimumDate = minDate
datePicker.maximumDate = maxDate

Answer 5

In Swift 2.1:
let currentDate: NSDate = NSDate()
let calendar: NSCalendar = NSCalendar(calendarIdentifier: NSCalendarIdentifierGregorian)!
// let calendar: NSCalendar = NSCalendar.currentCalendar()
calendar.timeZone = NSTimeZone(name: "UTC")!
let components: NSDateComponents = NSDateComponents()
components.calendar = calendar
components.year = -18
let minDate: NSDate = calendar.dateByAddingComponents(components, toDate: currentDate, options: NSCalendarOptions(rawValue: 0))!
components.year = -150
let maxDate: NSDate = calendar.dateByAddingComponents(components, toDate: currentDate, options: NSCalendarOptions(rawValue: 0))!
self.dateOfBirthUIDatePicker.minimumDate = minDate
self.dateOfBirthUIDatePicker.maximumDate = maxDate
print("minDate: \(minDate)")
print("maxDate: \(maxDate)")

Answer 6

Swift 3.0
let gregorian: NSCalendar = NSCalendar(calendarIdentifier: NSCalendar.Identifier.gregorian)!
let currentDate: Date = Date()
let components: NSDateComponents = NSDateComponents()
components.year = -150
let minDate: Date = gregorian.date(byAdding: components as DateComponents, to: currentDate, options: NSCalendar.Options(rawValue: 0))!
components.year = -16
let maxDate: Date = gregorian.date(byAdding: components as DateComponents, to: currentDate, options: NSCalendar.Options(rawValue: 0))!
self.datepicker.minimumDate = minDate
self.datepicker.maximumDate = maxDate

Answer 7

**Minimum and maximum date in UIDatePicker: #Swift
**if you want to select the min and max date between two date value use below simple code: **
for Example : Min Date : 01-04-2017 and Max Date : 31-03-2018
let calendar = Calendar.current
var minDateComponent = calendar.dateComponents([.day,.month,.year], from: Date())
minDateComponent.day = 01
minDateComponent.month = 04
minDateComponent.year = 2017
let minDate = calendar.date(from: minDateComponent)
print(" min date : \(String(describing: minDate))")
var maxDateComponent = calendar.dateComponents([.day,.month,.year], from: Date())
maxDateComponent.day = 0
maxDateComponent.month = 03 + 1
maxDateComponent.year = 2018
let maxDate = calendar.date(from: maxDateComponent)
print("max date : \(String(describing: maxDate))")
picker.minimumDate = minDate! as Date
picker.maximumDate = maxDate! as Date

Answer 8

In Objective C,
NSDateComponents *comps = [[NSDateComponents alloc] init];
NSDateComponents *components = [calendar components:(NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay) fromDate:[NSDate date]];
NSInteger year = components.year;
NSInteger month = components.month;
NSInteger day = components.day;
NSInteger minimumYear = year - 1900;//Given some year here for example
NSInteger minimumMonth = month - 1;
NSInteger minimumDay = day - 1;
[comps setYear:-minimumYear];
[comps setMonth:-minimumMonth];
[comps setDay:-minimumDay];
NSDate *minDate = [calendar dateByAddingComponents:comps toDate:currentDate options:0];
[datePicker setMinimumDate:minDate];
[datePicker setMaximumDate:[NSDate date]];
The minimum date would be January 01 1900. I hope it works for you all.. :)
In Swift 2.0 or later
let calendar = NSCalendar(calendarIdentifier:NSCalendarIdentifierGregorian);
let todayDate = NSDate()
let components = calendar?.components([NSCalendarUnit.Year,NSCalendarUnit.Month,NSCalendarUnit.Day], fromDate: todayDate)
let minimumYear = (components?.year)! - 1900
let minimumMonth = (components?.month)! - 1
let minimumDay = (components?.day)! - 1
let comps = NSDateComponents();
comps.year = -minimumYear
comps.month = -minimumMonth
comps.day = -minimumDay
let minDate = calendar?.dateByAddingComponents(comps, toDate: todayDate, options: NSCalendarOptions.init(rawValue: 0))
datePicker.minimumDate = minDate
datePicker.maximumDate = datePicker.date

Answer 9

Swift 4.1
I have created my extension for all type of limit based on Calendar.Component
extension UIDatePicker {
func setLimit(forCalendarComponent component:Calendar.Component, minimumUnit min: Int, maximumUnit max: Int) {
let currentDate: Date = Date()
var calendar: Calendar = Calendar(identifier: Calendar.Identifier.gregorian)
guard let timeZone = TimeZone(identifier: "UTC") else { return }
calendar.timeZone = timeZone
var components: DateComponents = DateComponents()
components.calendar = calendar
components.setValue(-min, for: component)
if let maxDate: Date = calendar.date(byAdding: components, to: currentDate) {
self.maximumDate = maxDate
}
components.setValue(-max, for: component)
if let minDate: Date = calendar.date(byAdding: components, to: currentDate) {
self.minimumDate = minDate
}
}
}
We can use this as following:
self.datePicker.setLimit(forCalendarComponent: .year, minimumUnit: 13, maximumUnit: 100)

Answer 10

Another case :
Suppose I want to show Date of birth as a Date picker, Dob is within the range of 1/1/1980 to  1/1/2000.
#IBOutlet var datePicker: UIDatePicker!
override func viewDidLoad() {
super.viewDidLoad()
datePicker.datePickerMode = UIDatePickerMode.date
// 01/01/1980 to 01/01/2000
let calendar = Calendar.current
var minDateComponent = calendar.dateComponents([.day,.month,.year], from: Date())
minDateComponent.day = 01
minDateComponent.month = 01
minDateComponent.year = 1980
let minDate = calendar.date(from: minDateComponent)
print(" min date : \(minDate)")
var maxDateComponent = calendar.dateComponents([.day,.month,.year], from: Date())
maxDateComponent.day = 01
maxDateComponent.month = 01
maxDateComponent.year = 2000
let maxDate = calendar.date(from: maxDateComponent)
print("max date : \(maxDate)")
self.datePicker.minimumDate = minDate! as Date
self.datePicker.maximumDate = maxDate! as Date
}

Answer 11

Swift 4.0
UIDatePicker Extension
extension UIDatePicker {
func set18YearValidation() {
let currentDate: NSDate = NSDate()
let calendar: NSCalendar = NSCalendar(calendarIdentifier: NSCalendar.Identifier.gregorian)!
calendar.timeZone = NSTimeZone(name: "UTC")! as TimeZone
let components: NSDateComponents = NSDateComponents()
components.calendar = calendar as Calendar
components.year = -18
let maxDate: NSDate = calendar.date(byAdding: components as DateComponents, to: currentDate as Date, options: NSCalendar.Options(rawValue: 0))! as NSDate
components.year = -150
let minDate: NSDate = calendar.date(byAdding: components as DateComponents, to: currentDate as Date, options: NSCalendar.Options(rawValue: 0))! as NSDate
self.minimumDate = minDate as Date
self.maximumDate = maxDate as Date
} }

Answer 12

if you want to set current date as minimum value for date picker, use this line of code:
datePicker.minimumDate = Date()