Come misurare la distanza in metri tra due CLLocations?

Question

Come posso ottenere la distanza in metri tra due CLLocation s? CLLocation non fornisce alcun metodo per farlo, sembra.

Answer 1

CLLocationDistance distance = [aCLLocationA distanceFromLocation:aCLLocationB]; 
// distance is a double representing the distance in meters 

Answer 2

CLLocationDistance distance = [secondLocation distanceFromLocation:firstLocation]; //  distance is expressed in meters 

CLLocationDistance kilometers = distance/1000.0; 
// or you can also use this.. 
CLLocationDistance meters = distance; 

NSString *distanceString = [[NSString alloc] initWithFormat: @"%f", kilometers]; 

flot totaldistancecovered = [distanceString floatValue]; 

//Now,you can use this float value for addition... 
// distanceMoved should be float type variable which is declare in .h file... 

distanceMoved = distanceMoved + totaldistancecovered ; 
theLabel.text = [NSString stringWithFormat: @"%f meters", distanceMoved]; 

Speranza, questo vi aiuterà a ...

Answer 3

+ (CLLocationDistance)distanceBetweenCoordinate:(CLLocationCoordinate2D)originCoordinate andCoordinate:(CLLocationCoordinate2D)destinationCoordinate {  
    CLLocation *originLocation = [[CLLocation alloc] initWithLatitude:originCoordinate.latitude longitude:originCoordinate.longitude]; 
    CLLocation *destinationLocation = [[CLLocation alloc] initWithLatitude:destinationCoordinate.latitude longitude:destinationCoordinate.longitude]; 
    CLLocationDistance distance = [originLocation distanceFromLocation:destinationLocation]; 
    [originLocation release]; 
    [destinationLocation release]; 

    return distance; 
} 

Answer 4

CLLocation *loc1 = [[CLLocation alloc] initWithLatitude:dblLatitude longitude:dblLongitude]; 
CLLocation *loc2 = [[CLLocation alloc] initWithLatitude:dblCurrentLatitude longitude:dblCurrentLongitude]; 
double dMeters = [loc1 distanceFromLocation:loc2]; 
[loc1 release]; 
[loc2 release]; 

Answer 5

Swift 3,0

let location1 = CLLocation(latitude: <CLLocationDegrees>, longitude: <CLLocationDegrees>) 
let location2 = CLLocation(latitude: <CLLocationDegrees>, longitude: <CLLocationDegrees>) 

let distance = location1.distance(from: location2) 

distance è in metri come Double

https://developer.apple.com/reference/corelocation/cllocation/1423689-distance