Googleマトリックス - 出発地と目的地の間の距離を計算

Question

私は原点と目的地の間の距離を返すgoogleマトリックスサービスのリクエストを作成しようとしています。

次のとおりです。Google Docs

が正しい要求を構築する方法を見つけ出すことはできません。

SUCCESS: { 
    "destination_addresses" =  (
    ); 
    "origin_addresses" =  (
    ); 
    rows =  (
    ); 
    status = "INVALID_REQUEST"; 
} 

https://maps.googleapis.com/maps/api/distancematrix/json?units=imperial&destinations%5B%5D=30.37577%2C-81.7837&destinations%5B%5D=26.89648%2C-82.00874&destinations%5B%5D=30.48638%2C-84.42159&destinations%5B%5D=35.11241%2C-80.95421&destinations%5B%5D=33.82343%2C-84.12118&destinations%5B%5D=33.67012%2C-78.93803&destinations%5B%5D=39.87034%2C-82.94822&destinations%5B%5D=42.14669%2C-87.83312&destinations%5B%5D=42.65981%2C-84.55101&destinations%5B%5D=39.87016%2C-82.9482&destinations%5B%5D=39.86784%2C-82.94884&destinations%5B%5D=39.87014%2C-82.94824&destinations%5B%5D=39.87021%2C-82.94826&destinations%5B%5D=42.67464%2C-82.83249&destinations%5B%5D=39.87025%2C-82.94812&destinations%5B%5D=39.87049%2C-82.94807&destinations%5B%5D=39.87057%2C-82.94829&destinations%5B%5D=40.43237%2C-74.48872&destinations%5B%5D=39.96912%2C-82.99415&destinations%5B%5D=40.44534%2C-74.41769&destinations%5B%5D=40.4453%2C-74.41779&destinations%5B%5D=41.28482%2C-72.93002&destinations%5B%5D=40.44524%2C-74.41776&destinations%5B%5D=40.44559%2C-74.41811&destinations%5B%5D=42.12788%2C-75.97026&destinations%5B%5D=40.44576%2C-74.41788&destinations%5B%5D=40.69494%2C-74.09928&destinations%5B%5D=40.76857%2C-73.73745&destinations%5B%5D=40.4856%2C-74.39982&destinations%5B%5D=30.26164%2C-98.8715&destinations%5B%5D=39.95258%2C-82.90484&destinations%5B%5D=32.69126%2C-96.24597&destinations%5B%5D=29.48223%2C-98.34786&destinations%5B%5D=32.82934%2C-97.03087&destinations%5B%5D=32.8292%2C-97.03081&key=NOPE_THATS_MY_KEY&origins=37.6724723880042%2C-90.4441829064476 

私は目的地の配列を構築する方法：

func createDestinationsArray(annotations: [MyAnnotation]) -> [String] { 
     var destinations: [String] = [] 
     var destination: String! 

     for annotation in annotations { 
      destination = "\(annotations.lat),\(annotations.lon)" 
      destinations.append(destination) 
     } 

     return destinations 
    } 

とリクエスト：事前に

let queue = DispatchQueue(label: "com.cnoon.distance-queue", qos: .utility, attributes: .concurrent) 


Alamofire.request(url, method: .get, parameters: ["origins" : origins, "destinations" : destinations, "key" : apiKey]).response(queue: queue, responseSerializer: DataRequest.jsonResponseSerializer(), completionHandler: { response in 
... 
}) 

感謝!!

Answer 1

文書では、配列の要素間に区切り文字として|があるはずです。また、各座標ペアの前にのの宛先を追加します。これは、ドキュメントを見ると明らかに間違っています。あなたには2つの選択肢があります。セパレータを含むか、後でセパレータを使用して配列を文字列に結合すると、宛先と原点配列を文字列として最初に作成します。私の知る限りでは、ネットワーク要求以外には配列を必要としないため、文字列を直接生成する方がより最適な解決策になると思います。

func createDestinationsArray(annotations: [MyAnnotation]) -> String { 
    return annotations.map({ return "\($0.latitude),\($0.longitude)" }).joined(separator: "|") 
}