IOS自带地图中，小知识点总结

来源：互联网发布：a卡优化的单机游戏编辑：程序博客网时间：2024/05/20 08:01

    CLGeocoder *geo = [[CLGeocoder alloc] init];

    [geo geocodeAddressString:self.destinationField.text completionHandler:^(NSArray *placemarks, NSError *error) {

        if (placemarks == 0 || error) {
            NSLog(@"地理编码失败");
            return ;
        }


        //1.创建一个线路请求
        MKDirectionsRequest *request = [[MKDirectionsRequest alloc] init];


        CLPlacemark *clp = [placemarks firstObject];


        MKPlacemark *mkp = [[MKPlacemark alloc] initWithPlacemark:clp];

        MKMapItem *destinationItem = [[MKMapItem alloc] initWithPlacemark:mkp];


        //2.设置源点和目的地点

        MKMapItem *currentItem = [MKMapItem mapItemForCurrentLocation];




        request.source = currentItem;

        request.destination = destinationItem;

        //3.创建一个线路管理器
        MKDirections *direction = [[MKDirections alloc] initWithRequest:request];


        //4.算路
        [direction calculateDirectionsWithCompletionHandler:^(MKDirectionsResponse *response, NSError *error) {


            if (response.routes.count == 0) {
                NSLog(@"没有请求到路");
                return ;
            }

            for (MKRoute *route in response.routes) {


                NSLog(@"%@",route.name);

                //获取能画在地图上的线段
                MKPolyline *line = route.polyline;

                //将线段添加在地图上
                [self.mapView addOverlay:line];

            }




        }];


    }];

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