我从文档知道我们可以发现两者之间的距离CLLocation使用功能，点distanceFromLocation: 但我的问题是我没有CLLocation数据类型和我在一起，我有CLLocationCoordinate2D点。 所以，我怎么能找到两个CLLocationCoordinate2D点之间的距离。 我已经看到了帖子后 ，但对我来说没有什么帮助。
Answer 1:
您应该创建使用CLLocation的对象，
- (id)initWithLatitude:(CLLocationDegrees)latitude
longitude:(CLLocationDegrees)longitude;
然后，你应该能够使用计算出的距离
[location1 distanceFromLocation:location2];
Answer 2:
如果这是确定你获得距离点之间米，然后
CLLocationCoordinate2D coordinate1 = <some value>
CLLocationCoordinate2D coordinate2 = <some value>
…
MKMapPoint point1 = MKMapPointForCoordinate(coordinate1);
MKMapPoint point2 = MKMapPointForCoordinate(coordinate2);
CLLocationDistance distance = MKMetersBetweenMapPoints(point1, point2);
将返回两个点之间的距离。 没有需要创建CLLocation给出CLLocationCoordinate2D 。 这定义可自iOS版4.0
Answer 3:
斯威夫特4：
extension CLLocation {
/// Get distance between two points
///
/// - Parameters:
/// - from: first point
/// - to: second point
/// - Returns: the distance in meters
class func distance(from: CLLocationCoordinate2D, to: CLLocationCoordinate2D) -> CLLocationDistance {
let from = CLLocation(latitude: from.latitude, longitude: from.longitude)
let to = CLLocation(latitude: to.latitude, longitude: to.longitude)
return from.distance(to)
}
}
Answer 4:
Swift4：结合上述想法
extension CLLocationCoordinate2D {
//distance in meters, as explained in CLLoactionDistance definition
func distance(from: CLLocationCoordinate2D) -> CLLocationDistance {
let destination=CLLocation(latitude:from.latitude,longitude:from.longitude)
return CLLocation(latitude: latitude, longitude: longitude).distance(from: destination)
}
}
Answer 5:
let point1 = MKMapPointForCoordinate(myLocation)
let point2 = MKMapPointForCoordinate(friendLocation)
let distance = MKMetersBetweenMapPoints(point1, point2)/1000
let distanceStr = NSString(format: "%.3f", distance)
简易版Valleri的回答。 除以1000得到KM，随后转变成字符串。
Answer 6:
MKMetersBetweenMapPoints现在仅仅是一个实例方法MKMapPoint
let coordinate1 = CLLocationCoordinate2D(latitude: lat1, longitude: lon1)
let coordinate2 = CLLocationCoordinate2D(latitude: lat2, longitude: lon2)
let point1 = MKMapPoint(coordinate1)
let point2 = MKMapPoint(coordinate2)
let distance = point1.distance(to: point2)
文章来源: Finding distance between CLLocationCoordinate2D points
