iOS)从谷歌路线API的两个坐标中获取不到路线

Question

我正在尝试获取原点坐标和目标坐标之间的路线。

我引用了stackoverflow .

所以我的代码如下:

let url = "https://maps.googleapis.com/maps/api/directions/json?origin=37.496375,126.9546903&destination=37.48121,126.9505233&mode=walking&key=MY_KEY"
Alamofire.request(url).responseJSON 
{ response in
print(response.request)  // original URL request
print(response.response) // HTTP URL response
print(response.data)     // server data
print(response.result)   // result of response serialization

let json = JSON(data: response.data!)
let routes = json["routes"].arrayValue

for route in routes
{
    let routeOverviewPolyline = route["overview_polyline"].dictionary
    let points = routeOverviewPolyline?["points"]?.stringValue
    let path = GMSPath.init(fromEncodedPath: points!)
    let polyline = GMSPolyline.init(path: path)
    polyline.map = self.mapView
 }
}

但结果是，response.data 如下:

{
 "status" : "ZERO_RESULTS",
 "available_travel_modes" :
 [
 "TRANSIT"
  ],
 "geocoded_waypoints" : [
{},
{}],"routes" : []}

关于这个问题，我搜索了一下，发现可能是坐标无法转换成地址导致的。

但我确实检查了两个坐标都被“CLGeocoder”(reverseGeocodeLocation)转换为正确的地址。

最后，我确实在“maps.google.com”上检查了相同的坐标地址，并向我显示了路线。

如何解决这个问题？

Answer 1

available_travel_modes contains an array of available travel modes. This field is returned when a request specifies a travel mode and gets no results. The array contains the available travel modes in the countries of the given set of waypoints.

您的回复返回为

"available_travel_modes":["TRANSIT"]

所以尝试将 mode=walking 更改为 &mode=transit