Split TextField Data to HH : mm in Swift

Question

In my application I take user input about alert time as hour and minute. My input from user is from

@IBOutlet weak var morningHour: UITextField!
@IBOutlet weak var eveningHour: UITextField!

and I implement hour : minute to my location as

var dateComponentsForMorning = DateComponents()
dateComponentsForMorning.hour = 08
dateComponentsForMorning.minute = 00
let triggerForMorning = UNCalendarNotificationTrigger(dateMatching: dateComponentsForMorning, repeats: true)

My question is: How can I split my input as HH:mm and implement to my code in swift ?