import UIKit

class ViewController: UIViewController {

    var datePicker: UIDatePicker!

    func datePickerDateChanged(datePicker: UIDatePicker) {

        println("Selected date = \(datePicker.date)")

    }

    override func viewDidLoad() {

        super.viewDidLoad()

        datePicker = UIDatePicker()

        datePicker.center = view.center

        view.addSubview(datePicker)

        datePicker.addTarget(self,

            action: "datePickerDateChanged:",

            forControlEvents: .ValueChanged)

        /*

            set the minimum and the maximum dates that it can display

        */

        let oneYearTime:NSTimeInterval =  *  *  *

        let todayDate = NSDate()

        let oneYearFromToday = todayDate.dateByAddingTimeInterval(oneYearTime)

        let twoYearsFromToday = todayDate.dateByAddingTimeInterval( * oneYearTime)

        datePicker.minimumDate = oneYearFromToday

        datePicker.maximumDate = twoYearsFromToday

    }

}

#import "ViewController.h"

@interface ViewController ()

@property (nonatomic, strong) UIDatePicker *myDatePicker;

@end

@implementation ViewController

- (void) datePickerDateChanged:(UIDatePicker *)paramDatePicker {

    if ([paramDatePicker isEqual:self.myDatePicker]) {

        NSLog(@"Selected date = %@", paramDatePicker.date);

    }

}

- (void)viewDidLoad {

    [super viewDidLoad];

    self.myDatePicker = [[UIDatePicker alloc] init];

    self.myDatePicker.center = self.view.center;

    [self.view addSubview:self.myDatePicker];

    [self.myDatePicker addTarget:self

        action:@selector(datePickerDateChanged:)

        forControlEvents:UIControlEventValueChanged];

    NSTimeInterval oneYearTime =  *  *  * ;

    NSDate *todayDate = [NSDate date];

    NSDate *oneYearFromToday = [todayDate dateByAddingTimeInterval:oneYearTime];

    NSDate *twoYearsFromToday = [todayDate dateByAddingTimeInterval: * oneYearTime];

    self.myDatePicker.minimumDate = oneYearFromToday;

    self.myDatePicker.maximumDate = twoYearsFromToday;

}

@end