xcode - seleccionar - mostrar fecha y hora actual en html5

Visualización del día de la semana desde el selector de fecha

Question

Quiero almacenar solo el día de la semana como una cadena usando un datePicker en xcode usando swift.

Answer 1

import UIKit
class ViewController: UIViewController {
@IBOutlet weak var datePicker: UIDatePicker!
@IBAction func displayDay(sender: AnyObject) {
// grab the selected date from the date picker
var chosenDate = self.datePicker.date
// create an NSDateFormatter
var formatter = NSDateFormatter()
formatter.dateFormat = "EEEE"
// grab the day and create a message
let day = formatter.stringFromDate(chosenDate)
let result = "That was a /(day)"
// create alert controller
let myAlert = UIAlertController(title: result, message: nil, preferredStyle: UIAlertControllerStyle.Alert)
// add an "OK" button
myAlert.addAction(UIAlertAction(title: "OK", style: UIAlertActionStyle.Default, handler: nil))
// show the alert
self.presentViewController(myAlert, animated: true, completion: nil)
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}

Answer 2

import UIKit
class ViewController: UIViewController {
@IBOutlet weak var myDatePicker: UIDatePicker!
@IBOutlet weak var strWeekday: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
// set mode to date only
myDatePicker.datePickerMode = UIDatePickerMode.Date
// add target for the trigger update function to change the weekday when the user changes the date
myDatePicker.addTarget(self, action: Selector("triggerUpdate:"), forControlEvents: UIControlEvents.ValueChanged)
// weekday initial value
self.strWeekday.text = myDatePicker.date.weekdayName
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
@IBAction func triggerUpdate(sender: AnyObject) {
self.strWeekday.text = myDatePicker.date.weekdayName
}
}
extension NSDate {
// returns weekday name (Sunday-Saturday) as String
var weekdayName: String {
let formatter = NSDateFormatter(); formatter.dateFormat = "EEEE"
return formatter.stringFromDate(self)
}
}