SWIFT：谷歌地图绘制航点折线 [英] SWIFT: google maps draw waypoint polyline

问题描述

您好，我想知道是否有方法在谷歌地图iOS中的两个或多个标记之间绘制一个航点。我不想画直线......但只使用公共道路。

  @objc private func makeGpsPath（）这里是我的一些代码来绘制直线，但它不是我正在寻找的。 {
 for i in 0 ..< trailArr.count {
 path.add（trailArr [i]）
} 
让polyline = GMSPolyline（路径：路径）
 polyline.strokeWidth = 5.0 
折线。 strokeColor = UIColor.black 
 polyline.map = mapViewContainer 
} 
  

解决

  //将您的源代码和目标坐标在这个方法中。 
 func getPolylineRoute（从源代码：CLLocationCoordinate2D到目的地：CLLocationCoordinate2D）{
 
让config = URLSessionConfiguration.default 
让session = URLSession（configuration：config）
 
 let url = URL（string：http://maps.googleapis.com/maps/api/directions/json?origin=\(source.latitude),\\((source.longitude )&destination= \（destination.latitude），\（destination.longitude）及传感器=假安培;模式=驱动）！ 
 
让task = session.dataTask（with：url，completionHandler：{
（data，response，error）in 
 if error！= nil {
 print（错误！.localizedDescription）
} else {
 do {
如果让json：[String：Any] = try JSONSerialization.jsonObject（with：data !, options：.allowFragments）as？[字符串：任意] {
 
让routes = json [routes] as？[Any] 
 let overview_polyline = routes？[0] as？[String：Any] 
让polyString = overview_polyline？[points] as？String 
 
 //调用此方法在地图上绘制路径
 self.showPath（polyStr：polyString！）
} 
 $ b $ catch {
 print（JSONSerialization中的错误）
} 
} 
}）
 task.resume（）
 } 
  

在地图上绘制折线。

  func showPath（polyStr：String）{
 let path = GMSPath（fromEncodedPath：polyStr）
 let polyline = GMSPolyline（path：path）
 polyline。 strokeWidth = 3.0 
 polyline.map = mapView //您的地图视图
} 
  

Hi I wonder if there is a method to draw a waypoint between two or more markers in google maps iOS. I don't want to draw straight lines... but use just public roads. Here is some of my code to draw straight lines but its not what i am looking for.

    @objc private func makeGpsPath(){
    for i in 0 ..< trailArr.count {
        path.add(trailArr[i])
    }
    let polyline = GMSPolyline(path: path)
    polyline.strokeWidth = 5.0
    polyline.strokeColor = UIColor.black
    polyline.map = mapViewContainer
}

解决方案

To draw polyline between two markers on GoogleMap in Swift 3.

// Pass your source and destination coordinates in this method.
func getPolylineRoute(from source: CLLocationCoordinate2D, to destination: CLLocationCoordinate2D){

        let config = URLSessionConfiguration.default
        let session = URLSession(configuration: config)

        let url = URL(string: "http://maps.googleapis.com/maps/api/directions/json?origin=\(source.latitude),\(source.longitude)&destination=\(destination.latitude),\(destination.longitude)&sensor=false&mode=driving")!

        let task = session.dataTask(with: url, completionHandler: {
            (data, response, error) in
            if error != nil {
                print(error!.localizedDescription)
            }else{
                do {
                    if let json : [String:Any] = try JSONSerialization.jsonObject(with: data!, options: .allowFragments) as? [String: Any]{

                        let routes = json["routes"] as? [Any]
                        let overview_polyline = routes?[0] as?[String:Any]
                        let polyString = overview_polyline?["points"] as?String

                        //Call this method to draw path on map
                        self.showPath(polyStr: polyString!)
                    }

                }catch{
                    print("error in JSONSerialization")
                }
            }
        })
        task.resume()
    }

To draw polyline on map .

func showPath(polyStr :String){
    let path = GMSPath(fromEncodedPath: polyStr)
    let polyline = GMSPolyline(path: path)
    polyline.strokeWidth = 3.0
    polyline.map = mapView // Your map view
}

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