How to get a unit of measurement as a singular noun?-CodePudding

I'm trying to represent running pace in my app - let's say 5min/km.

For voice over, I'd love this to be read as five minutes per kilometer.

I know I can get kilometers like that:

let measurementFormatter = MeasurementFormatter()
measurementFormatter.unitStyle = .long
measurementFormatter.string(from: UnitLength.kilometers)

but would it be possible to get the singular form (and take advantage of the already localized units)?

CodePudding user response：

It looks like the only native way to do this would be create an explicit measurement and manually remove the singular unit ("1"):

let measurementFormatter = MeasurementFormatter()
measurementFormatter.unitStyle = .long
measurementFormatter.unitOptions = .providedUnit

let length: Measurement<UnitLength> = .init(value: 1, unit: .kilometers)
let str = measurementFormatter.string(from: length)
  .replacingOccurrences(of: "1", with: "")
  .replacingOccurrences(of: "  ", with: " ")
  .trimmingCharacters(in: .whitespaces)

I'm no language expert but I expect this will work with most (if not all) languages.

CodePudding user response：

Edit

It looks like it's possible to create a custom MeasurementFormatter that outputs in minutes/km or minutes/mile. See the tutorial at https://www.raywenderlich.com/553-how-to-make-an-app-like-runkeeper-part-1 for an example of how to do this.