iphone - 寻找最近的CLLocation

Question

如何找到离用户最近的位置？基本上，我有一堆CLLocation's，我想找到最接近用户的一个。我已检索到用户当前位置，但我想找到最近的CLLocation. 我该怎么做呢？你可以只是NSLog最接近的。

Answer 1

CLLocation *currentLocation;
NSArray *otherLocations;

CLLocation *closestLocation;
CLLocationDistance closestDistance = DBL_MAX;

for (CLLocation* location in otherLocations) {
    CLLocationDistance distance = [currentLocation distanceFromLocation:location];
    if (distance < closestDistance) {
        closestLocation = location;
        closestDistance = distance;
    }
}
NSLog(@"the closest location is %@", closestLocation);