如何找出坐标之间的距离？ [英] How to find out distance between coordinates?

问题描述

我想让它显示两个CLLocation坐标之间的距离。没有复杂的数学公式，有没有办法做到这一点？如果没有，你会怎么做公式？

I want to make it so that it will show the amount of distance between two CLLocation coordinates. Is there someway to do this without a complex math formula? If there isn't how would you do it with a formula?

推荐答案

CLLocation有一个distanceFromLocation方法，因此给出了两个CLLocations： / p>

CLLocation has a distanceFromLocation method so given two CLLocations:

CLLocationDistance distanceInMeters = [location1 distanceFromLocation:location2];

或在Swift 4中：

or in Swift 4:

//: Playground - noun: a place where people can play

import CoreLocation


let coordinate₀ = CLLocation(latitude: 5.0, longitude: 5.0)
let coordinate₁ = CLLocation(latitude: 5.0, longitude: 3.0)

let distanceInMeters = coordinate₀.distance(from: coordinate₁) // result is in meters

你到达距离 米所以 1英里 = 1609米

if(distanceInMeters <= 1609)
 {
 // under 1 mile
 }
 else
{
 // out of 1 mile
 }

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