来位大神帮忙看一下为什么在类中的高德地图代理方法不执行！

import UIKit

protocol SearchDelegate {
func getResoult(_ request: AMapRouteSearchBaseRequest!, response: AMapRouteSearchResponse!)
}

class MapManager: NSObject ,AMapSearchDelegate {
var delegate:SearchDelegate!
// 所搜代理
lazy var searchApi:AMapSearchAPI = {
let search:AMapSearchAPI = AMapSearchAPI.init()
search.delegate = self
return search
}()

// 初始化方法
override init() {
    super.init()
    print(self.searchApi)
}

// 驾驶路线
func searchDrivingRoute(startPoint:CLLocationCoordinate2D,endPoint:CLLocationCoordinate2D) -> Void {
    let naviRequest:AMapDrivingRouteSearchRequest = AMapDrivingRouteSearchRequest.init()
    naviRequest.requireExtension = true
    naviRequest.strategy = 10
    naviRequest.origin = AMapGeoPoint.location(withLatitude: CGFloat(startPoint.latitude), longitude: CGFloat(startPoint.longitude))
    naviRequest.destination = AMapGeoPoint.location(withLatitude: CGFloat(endPoint.latitude), longitude: CGFloat(endPoint.longitude))
    self.searchApi.delegate = self
    self.searchApi.aMapDrivingRouteSearch(naviRequest)
}

// 步行路线
func searchWalkingRoute(startPoint:CLLocationCoordinate2D,endPoint:CLLocationCoordinate2D) -> Void {
    let naviRequest:AMapWalkingRouteSearchRequest = AMapWalkingRouteSearchRequest.init()
    naviRequest.origin = AMapGeoPoint.location(withLatitude: CGFloat(startPoint.latitude), longitude: CGFloat(startPoint.longitude))
    naviRequest.destination = AMapGeoPoint.location(withLatitude: CGFloat(endPoint.latitude), longitude: CGFloat(endPoint.longitude))
    self.searchApi.delegate = self
    self.searchApi.aMapWalkingRouteSearch(naviRequest)
}

// 公交路线
func searchTransportationRoute(startPoint:CLLocationCoordinate2D,endPoint:CLLocationCoordinate2D) -> Void{
    let naviRequest:AMapTransitRouteSearchRequest = AMapTransitRouteSearchRequest.init()
    naviRequest.strategy = 0
    naviRequest.origin = AMapGeoPoint.location(withLatitude: CGFloat(startPoint.latitude), longitude: CGFloat(startPoint.longitude))
    naviRequest.destination = AMapGeoPoint.location(withLatitude: CGFloat(endPoint.latitude), longitude: CGFloat(endPoint.longitude))
    self.searchApi.delegate = self
    self.searchApi.aMapTransitRouteSearch(naviRequest)
}

// 骑行路线
func searchRidingRoute(startPoint:CLLocationCoordinate2D,endPoint:CLLocationCoordinate2D) -> Void {
    let naviRequest:AMapRidingRouteSearchRequest = AMapRidingRouteSearchRequest.init()
    naviRequest.origin = AMapGeoPoint.location(withLatitude: CGFloat(startPoint.latitude), longitude: CGFloat(startPoint.longitude))
    naviRequest.destination = AMapGeoPoint.location(withLatitude: CGFloat(endPoint.latitude), longitude: CGFloat(endPoint.longitude))
    self.searchApi.delegate = self
    self.searchApi.aMapRidingRouteSearch(naviRequest)
}

func onRouteSearchDone(_ request: AMapRouteSearchBaseRequest!, response: AMapRouteSearchResponse!) {
    if self.delegate != nil{
        self.delegate.getResoult(request, response: response)
    }
}
func aMapSearchRequest(_ request: Any!, didFailWithError error: Error!) {
    print("请求发生错误")
}

}

https://download.csdn.net/download/madreain/9660936