我如何从结构中获取纬度和经度并将它们显示在 mapbox Swift

Question

我正在从 API 获取数据，我需要一个纬度和经度数组来显示地图上的所有位置（我在地图上使用 Mapbox）

func getdata(){
    
print("meter is \(mapMeter)")
    
var semaphore = DispatchSemaphore (value: 0)

let parameters = "{\n    \"latitude\" : \"41.76484\",\n\"longitude\" : \"123.3968636\",\n\"dist\": \"\(mapMeter)\"\n}"
let postData = parameters.data(using: .utf8)

var request = URLRequest(url: URL(string: "http://app.freewayfinder.com/api/locations")!,timeoutInterval: Double.infinity)
request.addValue("application/json", forHTTPHeaderField: "Content-Type")

request.httpMethod = "POST"
request.httpBody = postData

let task = URLSession.shared.dataTask(with: request) { data, response, error in
  guard let data = data else {
    print(String(describing: error))
    semaphore.signal()
    return
  }

    let getlocation = try? JSONDecoder().decode(Response.self, from: data)
    guard let locations = getlocation else {return}
    self.locations = locations.message
    self.collectionView.reloadData()
  semaphore.signal()
}

task.resume()
semaphore.wait()
    }

位置结构：

struct Response : Decodable {
let success : Bool
let code : Int
let message : [location]
}

struct location : Decodable{
let id : Int
let name : String
let img : String
let latitude : String
let longitude : String
let city : String
let country : String
let created_at : String
let updated_at : String

}

请帮我解决这个问题我想在地图上显示分配

Answer 1

您可以像这样从地图中的数组设置位置

for locationStruct in self.locations
{
    let annotation = MGLPointAnnotation()
    annotation.coordinate = CLLocationCoordinate2D(latitude: Double(locationStruct.latitude), longitude: Double(locationStruct.longitude))
    annotation.title = locationStruct.name
    annotation.subtitle = "Your Subtitle"
    self.mapView.addAnnotation(annotation)

}

我如何从结构中获取纬度和经度并将它们显示在 mapbox Swift

how do i get the latitude and longitude from struct and show them on mapbox Swift

ios

mapbox

swift

swift4.2