ios – 地图上2个给定点之间的MKDirectionsRequest

-(void)getPathDirections:(CLLOCATIOnCoordinate2D)source withDesTination:(CLLOCATIOnCoordinate2D)desTination{

MKPlacemark *placemarkSrc = [[MKPlacemark alloc] initWithCoordinate:source addressDictionary:nil];
MKMapItem *mapItemSrc = [[MKMapItem alloc] initWithPlacemark:placemarkSrc];
MKPlacemark *placemarkDest = [[MKPlacemark alloc] initWithCoordinate:desTination addressDictionary:nil];
MKMapItem *mapItemDest = [[MKMapItem alloc] initWithPlacemark:placemarkDest];
[mapItemSrc setName:@"name1"];
[mapItemDest setName:@"name2"];

MKDirectionsrequest *request = [[MKDirectionsrequest alloc] init];
[request setsource:mapItemSrc];
[request setDesTination:mapItemDest];
[request setTransportType:MKDirectionsTransportTypeAutomobile];
request.requestsAlternateRoutes = NO;

MKDirections *directions = [[MKDirections alloc] initWithrequest:request];

[directions calculateDirectionsWithCompletionHandler:
 ^(MKDirectionsResponse *response,NSError *error) {
     if (error) {
         // Handle Error
     } else {
         [_mapView removeOverlays:_mapView.overlays];
         [self showRoute:response];
     }
 }];

}

我在罗马尼亚,我的国家在路线支持国家的Apple名单上.

此外,我能够在当前位置和地图上的标记之间进行路线…

有任何想法吗？