In this Swift code snipped you will learn:

• How to create UIDatePicker in Swift programmatically
• Position UIDatePicker within a view
• Add UIDatePicker as a Subview
• Change UIDatePicker background colour
• Handle UIDatePicker value changed event
• Set UIDatePicker localTimeZone
• Use NSDateFormatter to format selected UIDatePicker value

import UIKit

class ViewController: UIViewController {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        
        // Create a DatePicker
        let datePicker: UIDatePicker = UIDatePicker()
        
        // Posiiton date picket within a view
        datePicker.frame = CGRect(x: 10, y: 50, width: self.view.frame.width, height: 200)
        
        // Set some of UIDatePicker properties
        datePicker.timeZone = NSTimeZone.local
        datePicker.backgroundColor = UIColor.white
        
        // Add an event to call onDidChangeDate function when value is changed.
        datePicker.addTarget(self, action: #selector(ViewController.datePickerValueChanged(_:)), for: .valueChanged)
   
        // Add DataPicker to the view
        self.view.addSubview(datePicker)
        
    }
    
    
    func datePickerValueChanged(_ sender: UIDatePicker){
        
        // Create date formatter
        let dateFormatter: DateFormatter = DateFormatter()
        
        // Set date format
        dateFormatter.dateFormat = "MM/dd/yyyy hh:mm a"
        
        // Apply date format
        let selectedDate: String = dateFormatter.string(from: sender.date)
        
        print("Selected value \(selectedDate)")
    }
    
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
    
}

Watch this video tutorial to learn how to create UIDatePicker using Xcode and Main Storyboard as well as how to convert milliseconds to NSDate and back.

UIDatePicker example in Swift

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