我想使用开始位置和结束位置在多个点之间绘制路线,我在跟踪一些示例,并且此链接获取json以获取航点 https://directionsdebug.firebaseapp.com/?origin=place_id%3AChIJ59dGBGBwTDkRlQsbxkBkqNw&destination=place_id%3AChIJ0TGAdgh6TDkRTFcRvOIXIOY&mode=driving&waypoints=Kotri%2C%20Jamshoro%2C%20Sindh%2C%20Pakistan&alternatives=true
这是我的代码,我没有使用链接获取所有要点,请引导我如何使用起点和航路点
func drawpath() {
let url = "https://maps.googleapis.com/maps/api/directions/json?origin=place_id%3AChIJ59dGBGBwTDkRlQsbxkBkqNw&destination=place_id%3AChIJ0TGAdgh6TDkRTFcRvOIXIOY&mode=driving&waypoints=Kotri%2C%20Jamshoro%2C%20Sindh%2C%20Pakistan&alternatives=true&key=AIzaSyCct09KdoyIc3VV5Bziw5Tk9MF0RhWXTNE"
Alamofire.request(url).responseJSON { response in
print(response.request as Any) // original URL request
print(response.response as Any) // HTTP URL response
print(response.data as Any) // server data
print(response.result as Any) // result of response serialization
let json = try! JSON(data: response.data!)
let routes = json["routes"][0]["legs"][0]["steps"].arrayValue
print("route is\(routes)")
// print route using Polyline
for route in routes
{
let routeOverviewPolyline = route["polyline"].dictionary
let points = routeOverviewPolyline?["points"]?.stringValue
print("ppoint\(String(describing: points))")
print("routeOverviewPolyline\(String(describing: routeOverviewPolyline))")
let path = GMSPath.init(fromEncodedPath: points!)
let polyline = GMSPolyline.init(path: path)
polyline.strokeWidth = 4
polyline.strokeColor = UIColor.red
polyline.map = self.mapview
}
}
答案 0 :(得分:0)
尝试此代码可能对您有帮助(源点和目标点之间的路线)
let origin = "\(37.778483),\(-122.513960)"
let destination = "\(37.706753),\(-122.418677)"
let url = "https://maps.googleapis.com/maps/api/directions/json?origin=\(origin)&destination=\(destination)&mode=driving&key=[YOUR-API-KEY]"
Alamofire.request(url).responseJSON { response in
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(path: path)
polyline.strokeColor = .black
polyline.strokeWidth = 10.0
polyline.map = mapViewX
}
}
答案 1 :(得分:0)
我在确定要创建的折线时发现错误,您应该使用响应中的“ overview_polyline”对象
所以我对您编写的代码做了些微改动:
func drawpath() {
let url = "https://maps.googleapis.com/maps/api/directions/json?origin=place_id%3AChIJ59dGBGBwTDkRlQsbxkBkqNw&destination=place_id%3AChIJ0TGAdgh6TDkRTFcRvOIXIOY&mode=driving&waypoints=Kotri%2C%20Jamshoro%2C%20Sindh%2C%20Pakistan&alternatives=true&key=AIzaSyCct09KdoyIc3VV5Bziw5Tk9MF0RhWXTNE"
Alamofire.request(url).responseJSON { response in
print(response.request as Any) // original URL request
print(response.response as Any) // HTTP URL response
print(response.data as Any) // server data
print(response.result as Any) // result of response serialization
let json = try! JSON(data: response.data!)
let routes = json["routes"][0]["overview_polyline"]["points"].stringValue
let path = GMSPath.init(fromEncodedPath: routes)
let polyline = GMSPolyline.init(path: path)
polyline.strokeWidth = 4
polyline.strokeColor = UIColor.red
polyline.map = self.mapview
}
我得到的输出:
希望能为您提供帮助。