本文展示的是在IOS開(kāi)發(fā)中調(diào)用高德地圖進(jìn)行駕車(chē)路徑繪制，開(kāi)發(fā)語(yǔ)言是Swift。
IOS高德地圖集成請(qǐng)看：IOS集成高德地圖Api
使用路徑規(guī)劃功能需要集成高德地圖的搜索功能。

pod 'AMapSearch'

定義AMapSearchAPI

定義主搜索對(duì)象 AMapSearchAPI ，并繼承搜索協(xié)議。

import AMapSearchKit

var searchApi:AMapSearchAPI!

構(gòu)造 AMapSearchAPI

searchApi=AMapSearchAPI()
searchApi.delegate=self
//起點(diǎn)終點(diǎn)
startCoordinate        = CLLocationCoordinate2DMake(39.910267, 116.370888)
destinationCoordinate  = CLLocationCoordinate2DMake(39.989872, 116.481956)

設(shè)置駕車(chē)線路規(guī)劃參數(shù)

//請(qǐng)求參數(shù)類(lèi)
let request=AMapDrivingCalRouteSearchRequest()
//設(shè)置起點(diǎn)
request.origin = AMapGeoPoint.location(withLatitude: CGFloat(startCoordinate.latitude), longitude: CGFloat(startCoordinate.longitude))
//設(shè)置終點(diǎn)
request.destination = AMapGeoPoint.location(withLatitude: CGFloat(destinationCoordinate.latitude), longitude: CGFloat(destinationCoordinate.longitude))
//顯示字段類(lèi)型
request.showFieldType = AMapDrivingRouteShowFieldType.init(rawValue: AMapDrivingRouteShowFieldType.cost.rawValue|AMapDrivingRouteShowFieldType.tmcs.rawValue|AMapDrivingRouteShowFieldType.navi.rawValue|AMapDrivingRouteShowFieldType.cities.rawValue|AMapDrivingRouteShowFieldType.polyline.rawValue)!

發(fā)起駕車(chē)路線規(guī)劃

//發(fā)起駕車(chē)路線規(guī)劃
searchApi.aMapDrivingV2RouteSearch(request)

在回調(diào)中處理數(shù)據(jù)

實(shí)現(xiàn)代理方法onRouteSearchDone

    //路徑搜索結(jié)果
    func onRouteSearchDone(_ request: AMapRouteSearchBaseRequest!, response: AMapRouteSearchResponse!) {

        // 取出第一種路線方案
        let stringWithOptional = response.route.paths.first?.polyline!
        let distance=response.route.paths.first?.distance
        let time=response.route.paths.first?.duration
        
        print("距離：\(distance!)米，預(yù)計(jì)耗時(shí)：\(time!)秒")
        let result = convertToArray(stringWithOptional)
        if var temp = result {
            let polyline = MAPolyline.init(coordinates: &temp, count: UInt(temp.count))
            mapView.add(polyline)
        }
    }

    //轉(zhuǎn)數(shù)組
    func convertToArray(_ coordinatesString: String!) -> [CLLocationCoordinate2D]? {
        // 去掉 "Optional(" 和 ")" 前綴和后綴
        let cleanedString = coordinatesString.replacingOccurrences(of: "Optional(\"", with: "").replacingOccurrences(of: "\")", with: "")
        
        var corArray = [CLLocationCoordinate2D]()
        let coordinatesArray = cleanedString.components(separatedBy: ";")
        
        for coordinate in coordinatesArray {
            let components = coordinate.components(separatedBy: ",")
            if components.count == 2, let longitude = Double(components[0]), let latitude = Double(components[1]) {
                let cor = CLLocationCoordinate2D.init(latitude: CLLocationDegrees(CGFloat(latitude)), longitude: CLLocationDegrees(CGFloat(longitude)))
                                        
                    corArray.append(cor)
            } else {
                return nil
            }
        }
        return corArray
    }

路線繪制

arrowTexture是圖片資源文件，按照官方文檔的說(shuō)法：紋理圖片須是正方形，寬高是2的整數(shù)冪，如64*64，否則無(wú)效；若設(shè)置了紋理圖片，設(shè)置線顏色、連接類(lèi)型和端點(diǎn)類(lèi)型將無(wú)效。

    //路徑繪制代理
    func mapView(_ mapView: MAMapView!, rendererFor overlay: MAOverlay!) -> MAOverlayRenderer! {
        if let tempOver = overlay as? MAPolyline {
            let polygonView = MAPolylineRenderer.init(polyline: (overlay as! MAPolyline))
            // 參數(shù)設(shè)置
            polygonView?.lineWidth = 10.0
            polygonView?.strokeImage=UIImage.init(resource: ImageResource.arrowTexture)
            
          return polygonView
        }
        return nil
    }

另外，要是有箭頭的話，記得要是箭頭向下的，向上的話實(shí)際顯示箭頭會(huì)反過(guò)來(lái)，奇奇怪怪的

起點(diǎn)終點(diǎn)圖標(biāo)設(shè)置（可跳過(guò)）

需要實(shí)現(xiàn)這個(gè)代理，不設(shè)置也會(huì)有默認(rèn)的大頭針圖標(biāo)
default_common_route_startpoint_normal、default_common_route_endpoint_normal是圖標(biāo)資源文件

//圖標(biāo)設(shè)置代理
    func mapView(_ mapView: MAMapView!, viewFor annotation: MAAnnotation!) -> MAAnnotationView! {
        let pointReuseIndetifier = "pointReuseIndetifier"
        var annotationView: MAAnnotationView? = mapView.dequeueReusableAnnotationView(withIdentifier: pointReuseIndetifier)
        
        if annotationView == nil {
            annotationView = MAAnnotationView(annotation: annotation, reuseIdentifier: pointReuseIndetifier)
            annotationView!.canShowCallout = true
            annotationView!.isDraggable = false
        }
        annotationView!.image = nil
        if annotation.title == "起點(diǎn)" {
            annotationView!.image = UIImage(named: "default_common_route_startpoint_normal")
        }
        else if annotation.title == "終點(diǎn)" {
            annotationView!.image = UIImage(named: "default_common_route_endpoint_normal")
        }
        return annotationView
    }

結(jié)果

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