iOS 硬件 导航 - 系统请求数据 绘制路线

关键词 ==  MKDirections

1.MKDirections*direction = [[MKDirectionsalloc]initWithRequest:request];

2.  MKDirectionsRequest *request = [[MKDirectionsRequestalloc]init];

  request.source request.destination === MKMapItem == MKPlacemark == CLPlaceMark == 地理编码

3.数据获得和处理

[directioncalculateDirectionsWithCompletionHandler:^(MKDirectionsResponse* _Nullable response,NSError* _Nullable error) {

        [response.routesenumerateObjectsUsingBlock:^(MKRoute* _Nonnull obj, NSUInteger idx,BOOL* _Nonnull stop) {

            NSLog(@"%@",obj.name);

            NSLog(@"%f",obj.distance);

            NSLog(@"%@",obj.polyline);

           MKPolyline *polyline = obj.polyline;   //划线

            [self.tapViewaddOverlay:polyline]; //代理

                          [obj.stepsenumerateObjectsUsingBlock:^(MKRouteStep* _Nonnull obj, NSUInteger idx,BOOL* _Nonnull stop) {

                MKPolyline *polyline =  obj.polyline;

                [self.tapViewaddOverlay:polyline];

            }];

        }];

    }];

#pragma -mark起点 终点 圆圈


    MKCircle *sourceCircle = [MKCirclecircleWithCenterCoordinate:sourceCLPm.location.coordinateradius:30];

    [self.tapViewaddOverlay:sourceCircle];

    MKCircle *destinationCircle = [MKCirclecircleWithCenterCoordinate:destinationCLPm.location.coordinateradius:30];

    [self.tapViewaddOverlay:destinationCircle];

4划线  代理 协议

#pragma -mark绘制

- (MKOverlayRenderer*)mapView:(MKMapView*)mapView rendererForOverlay:(id<MKOverlay>)overlay{

    if([overlay isKindOfClass:[MKPolylineclass]]){

        MKPolylineRenderer *polylineRender = [[MKPolylineRendereralloc]initWithOverlay:overlay];

        polylineRender.lineWidth= 2;

        polylineRender.strokeColor= [UIColorredColor];

        return polylineRender;
    }

    if([overlay isKindOfClass:[MKCircleclass]]){

        MKCircleRenderer *circle = [[MKCircleRendereralloc]initWithCircle:overlay];

        circle.lineWidth= 2;

        circle.strokeColor= [UIColorcyanColor];

       returncircle;

    }

    return nil;

}