How to find out distance between coordinates? - ios

Question

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?

Answer 1

CLLocation has a distanceFromLocation method so given two CLLocations:
CLLocationDistance distanceInMeters = [location1 distanceFromLocation:location2];
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
you get here distance in meter so 1 miles = 1609 meter
if(distanceInMeters <= 1609)
{
// under 1 mile
}
else
{
// out of 1 mile
}

Answer 2

Swift 4.1
import CoreLocation
//My location
let myLocation = CLLocation(latitude: 59.244696, longitude: 17.813868)
//My buddy's location
let myBuddysLocation = CLLocation(latitude: 59.326354, longitude: 18.072310)
//Measuring my distance to my buddy's (in km)
let distance = myLocation.distance(from: myBuddysLocation) / 1000
//Display the result in km
print(String(format: "The distance to my buddy is %.01fkm", distance))

Answer 3

Try this out:
distanceInMeters = fromLocation.distanceFromLocation(toLocation)
distanceInMiles = distanceInMeters/1609.344
From Apple Documentation:
Return Value: The distance (in meters) between the two locations.

Answer 4

import CoreLocation
//My location
let myLocation = CLLocation(latitude: 31.5101892, longitude: 74.3440842)
//My Next Destination
let myNextDestination = CLLocation(latitude: 33.7181584, longitude: 73.071358)
//Finding my distance to my next destination (in km)
let distance = myLocation.distance(from: myNextDestination) / 1000

Answer 5

func calculateDistanceInMiles(){
let coordinate₀ = CLLocation(latitude:34.54545, longitude:56.64646)
let coordinate₁ = CLLocation(latitude: 28.4646, longitude:76.65464)
let distanceInMeters = coordinate₀.distance(from: coordinate₁)
if(distanceInMeters <= 1609)
{
let s = String(format: "%.2f", distanceInMeters)
self.fantasyDistanceLabel.text = s + " Miles"
}
else
{
let s = String(format: "%.2f", distanceInMeters)
self.fantasyDistanceLabel.text = s + " Miles"
}
}

Answer 6

For swift 4
let locationOne = CLLocation(latitude: lat, longitude: long)
let locationTwo = CLLocation(latitude: lat,longitude: long)
let distance = locationOne.distance(from: locationTwo) * 0.000621371
distanceLabel.text = "\(Int(round(distance))) mi"

Answer 7

For objective-c
You can use distanceFromLocation to find the distance between two coordinates.
Code Snippets:
CLLocation *loc1 = [[CLLocation alloc] initWithLatitude:lat1 longitude:lng1];
CLLocation *loc2 = [[CLLocation alloc] initWithLatitude:lat2 longitude:lng2];
CLLocationDistance distance = [loc1 distanceFromLocation:loc2];
Your output will come in meters.

Answer 8

import UIKit
import CoreLocation
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
var currentLocation = CLLocation(latitude: 23.1929, longitude: 72.6156)
var DestinationLocation = CLLocation(latitude: 23.0504, longitude: 72.4991)
var distance = currentLocation.distance(from: DestinationLocation) / 1000
print(String(format: "The distance to my buddy is %.01fkm", distance))
}
}

Answer 9

You can also use the HaversineDistance algorithm just like android developers used, this is helpfull when you have antother app in android similar to it, else above answer is correct for you.
import UIKit
func haversineDinstance(la1: Double, lo1: Double, la2: Double, lo2: Double, radius: Double = 6367444.7) -> Double {
let haversin = { (angle: Double) -> Double in
return (1 - cos(angle))/2
}
let ahaversin = { (angle: Double) -> Double in
return 2*asin(sqrt(angle))
}
// Converts from degrees to radians
let dToR = { (angle: Double) -> Double in
return (angle / 360) * 2 * .pi
}
let lat1 = dToR(la1)
let lon1 = dToR(lo1)
let lat2 = dToR(la2)
let lon2 = dToR(lo2)
return radius * ahaversin(haversin(lat2 - lat1) + cos(lat1) * cos(lat2) * haversin(lon2 - lon1))
}
let amsterdam = (52.3702, 4.8952)
let newYork = (40.7128, -74.0059)
// Google says it's 5857 km so our result is only off by 2km which could be due to all kinds of things, not sure how google calculates the distance or which latitude and longitude google uses to calculate the distance.
haversineDinstance(la1: amsterdam.0, lo1: amsterdam.1, la2: newYork.0, lo2: newYork.1)
I have picked the code written above from the refrence link
https://github.com/raywenderlich/swift-algorithm-club/blob/master/HaversineDistance/HaversineDistance.playground/Contents.swift

Answer 10

Swift 5.
func calculateDistance(mobileLocationX:Double,mobileLocationY:Double,DestinationX:Double,DestinationY:Double) -> Double {
let coordinate₀ = CLLocation(latitude: mobileLocationX, longitude: mobileLocationY)
let coordinate₁ = CLLocation(latitude: DestinationX, longitude: DestinationY)
let distanceInMeters = coordinate₀.distance(from: coordinate₁)
return distanceInMeters
}
use to
let distance = calculateDistance("add parameters")