查找最近的CLLocation

Question

如何找到離用戶最近的位置？基本上，我有一堆CLLocation的，我想找到最接近用戶的那個。我已經檢索了用戶當前的位置，但我想找到最接近的CLLocation。我會如何去做這件事？你可以最接近NSLog。

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);