func getAddressFromLatLon() {
var locManager = CLLocationManager()
locManager.requestWhenInUseAuthorization()
var currentLocation = CLLocation()
if( CLLocationManager.authorizationStatus() == CLAuthorizationStatus.authorizedWhenInUse ||
CLLocationManager.authorizationStatus() == CLAuthorizationStatus.authorized){
currentLocation = locManager.location!
}
var center : CLLocationCoordinate2D = CLLocationCoordinate2D()
let lat: Double = Double(currentLocation.coordinate.latitude)
//21.228124
let lon: Double = Double(currentLocation.coordinate.longitude)
//72.833770
let ceo: CLGeocoder = CLGeocoder()
center.latitude = lat
center.longitude = lon
let geoCoder = CLGeocoder()
var placemark: AnyObject
var error: NSError
geoCoder.reverseGeocodeLocation(locManager.location!, completionHandler: { (placemark, error) -> Void in
if error != nil {
print("Error: \(error?.localizedDescription)")
return
}
if (placemark?.count)! > 0 {
let pm = (placemark?[0])! as CLPlacemark
//self.addressString = pm.locality! + pm.country!
let adress = pm.locality! + " " + pm.country!
print(adress)
} else {
print("Error with data")
}
})
}
对这个非常基本的问题感到抱歉。我对 swift 相当陌生,我正在尝试对纬度和经度进行反向地理编码。我试图从反向地理编码返回地址,但它似乎返回零。有问题的函数是 getAddressFromLatLon() ,我尝试添加返回类型,但它返回 nil。当我在函数本身中打印时,会打印正确的值,但由于某种原因,我很难返回地址,因此我可以将其传递给其他类/函数。
最佳答案
您需要保存从保留地理编码器获得的值并且只需要使用它。
geoCoder.reverseGeocodeLocation(locManager.location!, completionHandler: { (placemark, error) -> Void in
if error != nil {
print("Error: \(error?.localizedDescription)")
return
}
if (placemark?.count)! > 0 {
let pm = (placemark?[0])! as CLPlacemark
//self.addressString = pm.locality! + pm.country!
let adress = pm.locality! + " " + pm.country!
// Store value into global object and you can use it...
// Another option, you can call one function and do necessary steps in it
mainLocality = pm.locality
mainCountry - pm.country
updateGeoLocation() // Call funcation
print(adress)
} else {
print("Error with data")
}
})
func updateGeoLocation(){
// You can use both object at here
// mainLocality
// mainCountry
// Do your stuff
}
关于ios - 返回类型为空,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/44492723/