UIDatePicker, setting maximum and minimum dates based on todays date

My swift 4 version of @toddg is :

let currentDate = Date()
var dateComponents = DateComponents()
let calendar = Calendar.init(identifier: .gregorian)
dateComponents.year = -100
let minDate = calendar.date(byAdding: dateComponents, to: currentDate)
dateComponents.year = -13
let maxDate = calendar.date(byAdding: dateComponents, to: currentDate)

Works great for me !

m_datePicker.maximumDate = [NSDate date];

You can use this line of code to set max date (Today).

Not tested, but you probably want something like this.

NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSDate *currentDate = [NSDate date];
NSDateComponents *comps = [[NSDateComponents alloc] init];
[comps setYear:30];
NSDate *maxDate = [calendar dateByAddingComponents:comps toDate:currentDate options:0];
[comps setYear:-30];
NSDate *minDate = [calendar dateByAddingComponents:comps toDate:currentDate options:0];

[datePicker setMaximumDate:maxDate];
[datePicker setMinimumDate:minDate];

Update for Swift 4.1

let calendar = Calendar(identifier: .gregorian)
var comps = DateComponents()
comps.year = 30
let maxDate = calendar.date(byAdding: comps, to: Date())
comps.year = -30
let minDate = calendar.date(byAdding: comps, to: Date())
datePicker.maximumDate = maxDate
datePicker.minimumDate = minDate