谷歌矩阵 - 起点和目的地之间的距离计数

我正在尝试构建谷歌矩阵服务的请求，它将返回原点和目的地之间的距离。谷歌矩阵 - 起点和目的地之间的距离计数

无法弄清楚如何建立正确的请求。

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

我打造的目的地数组的方式：

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 
    }

和请求：

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 
... 
})

在此先感谢！

来源

2017-06-16 noname

该文档清楚地表明您应该有|作为数组元素之间的分隔字符。另外，您在每个坐标对前添加目的地，如果您查看文档，这显然是错误的。你有两个选择。可以首先将您的目的地和起点数组创建为字符串，包含分隔符或稍后使用分隔符将数组连接到字符串。因为据我所知，除了网络请求外，你不需要你的数组，因为我认为直接生成一个字符串是更好的解决方案。

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

来源

2017-06-16 10:20:48

好的，所以最好的解决方案是创建一个字符串，而不是数组？因为对于距离数组中的每个索引，它将添加到请求目标....目标...等等？像现在一样？ – noname

是的，Alamofire对数组的编码方式与Google地图所期望的不同。而且，除了请求之外，您不需要该字符串数组，因此从createDestinationsArray函数生成并返回String本身也更有效。 –

较短的版本：'return annotations.map（{return“\（$ 0.latitude），\（$ 0.longitude）”}）。joined（separator：“|”）'。将func返回类型更改为'String'，而不是'[String]' – Scriptable

谷歌矩阵 - 起点和目的地之间的距离计数

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