How to get borough from UK postcode using CoreLocation in swift?

问题

Does anyone know if I can get the borough from a UK post code using CoreLocation framework? In the function listed below, the borough is not returned. It should return Tower Hamlets.

  func getLocationFrom(postalCode : String){
    let geocoder = CLGeocoder()

    geocoder.geocodeAddressString(postalCode) {
        (placemarks, error) -> Void in
        let placemark = placemarks?[0] 
             print("placemark.addressDictionary are \(placemark.addressDictionary)") //does not print Canary Wharf  
    }
}

print(getLocationFrom(postalCode:"E14 9LR")) //does not print Tower Hamlets, it prints London, which is the city, not the borough..

回答1:

In order to get the locality from a postcode you just have to subscript placemarks array and then access the property locality for the element at the indexPath you want. My mistake was that I was trying to access another property on the placemarks array, namely addressDictionary which was not producing the expected result.

 func getLocationFrom(postalCode: String, callback: @escaping(_ locality: String?) -> Void){


    let geocoder = CLGeocoder()
    geocoder.geocodeAddressString(postalCode) {
        (placemarks, error) -> Void in

       callback(placemarks?[0].locality)

    }

来源：https://stackoverflow.com/questions/49221732/how-to-get-borough-from-uk-postcode-using-corelocation-in-swift