（完整代码详见 SDKDemo 工程的 MBNaviController.m）
            // 实时导航
            if (naviMapView == nil) {
                // 地图不存在
                naviMapView=[[MBMapView alloc]initWithFrame:(0,120.0,kMainScreenSizeWidth, kMainScreenSizeHeight - 120.0 - 55.0)];
                [self.view addSubview:naviMapView];
                // 创建车标图层
                MBModelOverlay *car = [[MBModelOverlay alloc] initWithFilePath:@"res/red_car.obj"];
                carHead = MBNaviHeadNorthUp;

            }
            // 初始化导航模块
            MBNaviSession *naviSession = [MBNaviSession sharedInstance];
            naviSession.enableSound = YES;
            naviSession.delegate = self;
            // 路线计算完成的回调函数
            - (void)naviSessionResult:(MBRouteCollection *)routes {
                // 算路完成
                // 得到routes集合，此集合中的routeBases，在发起导航获取数据时需用到
                for (MBOverlay *overlay in naviMapView.overlays) {
                        [naviMapView removeOverlay:overlay];
                }
                if (routes.routeBases.count > 0) {
                    MBRouteOverlay *routeOverlay = nil;
                    for (MBRouteBase *base in routes.routeBases) {
                        routeOverlay = [[MBRouteOverlay alloc] initWithRoute:base.getRouteBase];
                        routeOverlay.clickEnable = YES;
                        [naviMapView addOverlay:routeOverlay];
                    }
                } 
                [naviSession startSimulation];
            }
            - (void)naviSessionTracking:(MBNaviSessionData *)sData {
                NSLog(@"当前车的位置：%d,%d",sData.carPos.x,sData.carPos.y);
                NSLog(@"当前车头朝向：%ld",(long)sData.carOri);
                NSLog(@"当前建议比例尺：%ld",(long)sData.suggestedMapScale);
                NSLog(@"是否有下一个转弯：%@，还有%ld米转弯",sData.hasTurn?@"是":@"没有",(long)sData.turnIconDistance);
                NSLog(@"当前转向标ID：%ld",(long)sData.turnIcon);
                NSLog(@"转弯之后的道路名称：%@",sData.nextRoadName);
                NSLog(@"当前所在道路名称：%@",sData.roadName);
                NSLog(@"\n");
            }