Format hour and minute integers as the String "9:30 am" - swift

Question

How can I express hour and minute integer values as a String formatted like "9:30 am"?
Currently, I have:
let hour: Int = 9
let minute: Int = 30
var dateComponents = DateComponents()
dateComponents.hour = hour
dateComponents.minute = minute
let time: String = DateComponentsFormatter.localizedString(from: dateComponents, unitsStyle: DateComponentsFormatter.UnitsStyle.positional)
print(time) // Prints "9:30", not "9:30 am"
I know I can manually concatenate the time meridian at the end, but I'm hoping there's a built in function for this. Perhaps a different UnitsStyle?

Answer 1

You could use DateFormatter to achieve this.
let formatter = DateFormatter()
formatter.dateFormat = "hh:mm a"
formatter.amSymbol = "am"
formatter.pmSymbol = "pm"
let dateString = formatter.string(from: Date())
print(dateString) // prints "12:17 pm"
If you want to only include single digits for the hour, then you only include one "h" in the dateFormat:
formatter.dateFormat = "h:mm a" // prints "1:30 pm" instead of "01:30 pm"

Answer 2

let formatter = DateFormatter()
formatter.dateFormat = "hh:mm a"
formatter.calendar = .current
let hour: Int = 9
let minute: Int = 30
var dateComponents = DateComponents()
dateComponents.hour = hour
dateComponents.minute = minute
If let fixedDate: Date = Calendar.current.date(from: dateComponents) {
let formattedString = formatter.string(from: fixedDate)
print(formattedString) //prints 09:30 AM
}
You need to add current calendar/date to get am or pm from your time from what I know.
EDIT:
Thanks to Leo Dabus in the comments for pointing this out: the above method will result in a date that is on January 1st 0001, if the date is important for you you have to specify the date (day/month/year)
for example:
let date = Date()
let formatter = DateFormatter()
formatter.dateFormat = "hh:mm a"
formatter.calendar = .current
let hour: Int = 9
let minute: Int = 30
var dateComponents = DateComponents()
dateComponents.hour = hour
dateComponents.minute = minute
dateComponents.year = Calendar.current.component(.year, from: date)
dateComponents.month = Calendar.current.component(.month, from: date)
dateComponents.day = Calendar.current.component(.day, from: date)
If let fixedDate: Date = Calendar.current.date(from: dateComponents) {
let formattedString = formatter.string(from: fixedDate)
print(formattedString)
}