我正在使用swift 4编写应用程序。我在reverseGeocoding上遇到了问题。
这是我的代码：
此函数获取当前坐标。
func getCurrentCoordinates(){
var currentLocation: CLLocation!
var locManager = CLLocationManager()
locManager.requestWhenInUseAuthorization()
locationManager.requestAlwaysAuthorization()
locationManager.startUpdatingLocation()
if( CLLocationManager.authorizationStatus() == .authorizedWhenInUse ||
CLLocationManager.authorizationStatus() == .authorizedAlways){
currentLocation = locManager.location
self.coordGPS = currentLocation
}
}
此函数转换为地址
func convertLatLongToAddress(latitude:Double,longitude:Double){
let geoCoder = CLGeocoder()
let location = CLLocation(latitude: latitude, longitude: longitude)
geoCoder.reverseGeocodeLocation(location, completionHandler: { (placemarks, error) -> Void in
// Place details
var placeMark: CLPlacemark!
placeMark = placemarks?[0]
self.sAddress = ""
/* Location name
if let locationName = placeMark.location {
if(self.bLocalize == true){
print(locationName)
}else{
//self.sAddress = locationName
}
}*/
// Street number
if let number = placeMark.subThoroughfare {
//print(number)
if(self.bLocalize == true){
self.TextFieldStationServiceAdresse.text = placeMark.subThoroughfare! + ", " + self.TextFieldStationServiceAdresse.text!
}else{
self.sAddress = self.sAddress! + ", " + number
}
}
// Street address
if let street = placeMark.thoroughfare {
if(self.bLocalize == true){
print(street)
self.TextFieldStationServiceAdresse.text = street
}else{
self.sAddress = self.sAddress! + ", " + street
}
}
// Zip code
if let zip = placeMark.postalCode {
if(self.bLocalize == true){
print(zip)
self.TextFieldCodePostal.text = zip
}else{
self.sAddress = self.sAddress! + ", " + zip
}
}
// City
if let ville = placeMark.locality {
if(self.bLocalize == true){
self.TextFieldStationServiceCPVille.text = ville
}else{
self.sAddress = self.sAddress! + " " + ville
}
}
// Country
if let country = placeMark.country {
if(self.bLocalize == true){
print(country)
}else{
self.sAddress = self.sAddress! + ", " + country
}
}
})
我的问题是从未调用completionHandler。
我导入了CoreLocation
你能不能告诉我为什么从未调用过完善手？位置服务不适用于此课程。
谢谢您的帮助。
将此委托方法添加到您的班级。
func locationManager(_ manager: CLLocationManager, didUpdateLocations
locations: [CLLocation]) {
let userLocation :CLLocation = locations[0] as CLLocation
// Convert location into object with human readable address components
CLGeocoder().reverseGeocodeLocation(userLocation) { (placemarks, error) in
// Check for errors
if error != nil {
print(error ?? "Unknown Error")
} else {
if let placemark = placemarks?[0] {
var streetAddress = ""
if placemark.subThoroughfare != nil && placemark.thoroughfare != nil {
streetAddress = placemark.subThoroughfare! + " " + placemark.thoroughfare!
// self.address.text = streetAddress
} else {
print("Unable to find street address")
}
// Same as above, but for city
var city = ""
// locality gives you the city name
if placemark.locality != nil {
city = placemark.locality!
// self.city.text = city
} else {
print("Unable to find city")
}
// Do the same for state
var state = ""
// administrativeArea gives you the state
if placemark.administrativeArea != nil {
state = placemark.administrativeArea!
} else {
print("Unable to find state")
}
// And finally the postal code (zip code)
var zip = ""
if placemark.postalCode != nil {
zip = placemark.postalCode!
} else {
print("Unable to find zip")
}
var country = ""
if placemark.country != nil {
country = placemark.country!
self.city.text = country
} else {
print("Unable to find zip")
}
DispatchQueue.main.async {
self.address.text = String("\(streetAddress)\n\(city), \(state) \(zip)")
}
}
}
}
}
别忘了添加
您班级中的CLLocationManagerDelegate