Set selected time in EKEvent - ios

Question

In my application I can select date and time for EKEvent. I almost achieved what I want except Time. How can I set time. Below is my code, I have tried.
func setReminder(){
let eventStore = EKEventStore()
eventStore.requestAccess(
to: EKEntityType.event, completion: {(granted, error) in
if !granted {
print("Access to store not granted")
print(error!.localizedDescription)
} else {
print("Access granted")
let event = EKEvent(eventStore: eventStore)
event.title = self.getCategoryText + " Reminder"
event.calendar =
eventStore.defaultCalendarForNewEvents
event.timeZone = TimeZone.current
let alarm = EKAlarm(absoluteDate: self.selectedDate!)
event.addAlarm(alarm)
if self.daysBeforeDate != nil{
let earlierDate = self.daysBeforeDate
let earlierAlarm = EKAlarm(absoluteDate: earlierDate!)
event.addAlarm(earlierAlarm)
}
print("selected time", self.selectedTime)
var number1: Double = (self.selectedTime! as NSString).doubleValue
event.startDate = self.selectedDate!.addingTimeInterval(number1)
event.endDate = self.selectedDate!
do {
try eventStore.save(event, span: .thisEvent, commit: true)
} catch let error {
print("Reminder failed with error \(error.localizedDescription)")
return
}
}
})
}
Update 1
let calendar = Calendar.current
var dateComponents = DateComponents()
dateComponents.year = calendar.component(.year, from: self.selectedDate!)
dateComponents.month = calendar.component(.month, from: self.selectedDate!)
dateComponents.day = calendar.component(.day, from: self.selectedDate!)
dateComponents.timeZone = TimeZone.current
dateComponents.hour = self.selectedHour
dateComponents.minute = self.selectedMinute
let userCalendar = Calendar.current // user calendar
let someDateTime = userCalendar.date(from: dateComponents)

Answer 1

This is the code I've used for creating an event for a time interval and it's working fine for me:
func saveEvent(on date: Date, withTitle title: String, forHourse hourse: Int) {
let event = EKEvent(eventStore: eventStore!)
event.title = title
event.startDate = date
event.endDate = date.addingTimeInterval((TimeInterval(hourse * 60 * 60)))
let alarm = EKAlarm(absoluteDate: date)
event.alarms = [alarm]
event.calendar = (eventStore?.defaultCalendarForNewEvents)!
do {
try eventStore?.save(event, span: .thisEvent, commit: true)
} catch {
}
}