ios - iOS：获取位置之间的距离

Question

请不要在未阅读整个问题的情况下标记为重复

有没有办法在不显示地图的情况下获取iOS 中两点之间的行驶路线的长度？CLLocation

不是乌鸦飞的那样！！！但就像在 MK 驾驶模式下

我不能使用谷歌，因为我必须在谷歌地图上显示结果。

我找到了这段代码，但这仅在显示 iOS-Map 时有效：

-(void)showMapRouteFromCurrentLocation
{
    CLLocationCoordinate2D currentUserCoordinate = YourCoordinate;
    //currentUserCoordinate.latitude=  +53.509980;
    //currentUserCoordinate.longitude =  -0.133700;

    MKPlacemark *place = [[MKPlacemark alloc]
                          initWithCoordinate:currentUserCoordinate
                          addressDictionary:nil];


    MKMapItem *mapItem = [[MKMapItem alloc]initWithPlacemark:place];

    NSDictionary *routeOption = [[NSDictionary alloc] initWithObjectsAndKeys:MKLaunchOptionsDirectionsModeDriving,MKLaunchOptionsDirectionsModeKey, nil];

    [mapItem openInMapsWithLaunchOptions:routeOption];
}

但这不是我需要的。

Answer 1

正如 Brainray 所说，从 iOS7 开始，您可以执行以下操作：

MKDirectionsRequest *routeRequest = [[MKDirectionsRequest alloc] init];
routeRequest.transportType = MKDirectionsTransportTypeAutomobile;
[routeRequest setSource:startPoint]; // startPoint is an MKMapItem with the starting lat/long coordinate
[routeRequest setDestination :endPoint]; // endPoint an MKMapItem with the ending lat/long coordinate

MKDirections *routeDirections = [[MKDirections alloc] initWithRequest:routeRequest];
[routeDirections calculateDirectionsWithCompletionHandler:^(MKDirectionsResponse * routeResponse, NSError *routeError)
{
    // Check for error and then do something with the route...
    MKRoute *route = routeResponse.routes[0];
}];

Answer 2

据我所知，使用 Apple 的 API 是不可能的。您需要使用第 3 方系统来询问两点之间的方向。像谷歌一样，但他们通常有其他限制，比如在他们的地图上显示它。（正如你提到的）。

不确定他们是否有类似的要求，但您可以查看Map Quest 的 Api

Answer 3

使用 iOS7，您可以在 API 中获得完整的指导

看看这个教程教程。

Answer 4

虽然 Ken 给出了很好的答案，但我还将添加将坐标转换为 MKMapItem 的方式：

+ (void)distanceByRoadFromPoint:(CLLocationCoordinate2D)fromPoint
                        toPoint:(CLLocationCoordinate2D)toPoint
              completionHandler:(MKDirectionsHandler)completionHandler {

    MKDirectionsRequest *request = [[MKDirectionsRequest alloc] init];
    request.transportType = MKDirectionsTransportTypeAutomobile;

    request.source = [self mapItemFromCoordinate:fromPoint];
    request.destination = [self mapItemFromCoordinate:toPoint];

    MKDirections *directions = [[MKDirections alloc] initWithRequest:request];
    [directions calculateDirectionsWithCompletionHandler:^(MKDirectionsResponse * routeResponse, NSError *routeError) {

         MKRoute *route = [routeResponse.routes firstObject];
         CLLocationDistance distance = route.distance;
         NSTimeInterval expectedTime = route.expectedTravelTime;

         //call a completion handler that suits your situation

     }];    

   }


+ (MKMapItem *)mapItemFromCoordinate:(CLLocationCoordinate2D)coordinate {

    MKPlacemark *placemark = [[MKPlacemark alloc] initWithCoordinate:coordinate addressDictionary:nil];
    MKMapItem *item = [[MKMapItem alloc] initWithPlacemark:placemark];

    return item;

}

Answer 5

give latitude2,lang of destination   and latitude,longitude of first place.

this function return distance in kilometer.


  -(double)distanceFilter:(double) latitude2 :(double)lang{
        double distance=(((acos(sin((latitude*M_PI/180)) * sin((latitude2*M_PI/180))+cos((latitude*M_PI/180)) * cos((latitude2*M_PI/180)) * cos(((longitude- lang)*M_PI/180))))*180/M_PI)*60*1.1515*1.609344);

        return distance;
    }