We are facing the following issue with the following API Locale.isoRegionCodes which has been deprecated from iOS >= 16. The new API is the following Locale.Region.isoRegions but when doing a mapping like the following the region.identifier returns the code 001.
if #available(iOS 16, *) {
let CountryCodeWithNewApi = Locale.Region.isoRegions.map { region in
CustomCountry(value: "", key: region.identifier)
}.sorted(by: { $0.value < $1.value })
} else {
// Fallback on earlier versions
}
How do we get the old country codes of 2 letters by deriving it from this code? is it possible or we are required to do a manual mapping of the ISO-3166-alpha 2 codes to be able to display all the country codes to the user?
The expression:
Locale.Region.isoRegions.filter { $0.subRegions.isEmpty }.map { $0.identifier }
gives the same list as the deprecated:
Locale.isRegionCodes
The following code:
let oldCodes = Locale.isoRegionCodes.sorted()
let newCodes = Locale.Region.isoRegions.filter { $0.subRegions.isEmpty }.map { $0.identifier }.sorted()
print(oldCodes == newCodes)
prints:
true
when run on a macOS Swift Playground in Xcode 15.2 under macOS 14.3.1. It should also be true under iOS (but I haven't confirmed).
Your code then becomes something like the following:
if #available(iOS 16, *) {
let countries = Locale.Region.isoRegions.compactMap {
$0.subRegions.isEmpty ? CustomCountry(value: "", key: $0.identifier) : nil
}.sorted(by: { $0.value < $1.value })
} else {
let countries = Locale.isoRegionCodes.map { CustomCountry(value: "", key: $0) }
}