如何使用谷歌计算两个位置之间的距离 api in swift 4

Question

我目前正在从事一个 IOS 项目，我必须在其中计算两个位置之间的距离。 我没有使用谷歌就完成了，但我想使用谷歌 api 来获得准确的距离我在这里分享我的代码

    let myLocation = CLLocation(latitude: CLLocationDegrees(latittude[indexPath.row])!, longitude: CLLocationDegrees(longittude[indexPath.row])!)
        let lat = UserDefaults.standard.string(forKey: "lat") ?? ""
        let long = UserDefaults.standard.string(forKey: "long") ?? ""
        let myBuddysLocation = CLLocation(latitude: CLLocationDegrees(lat)!, longitude: CLLocationDegrees(long)!)

Answer 1

使用CoreLocation Framework的距离功能，

 var startLocation = CLLocation(latitude: startLatitude, longitude: startLongitude)
 var endLocation = CLLocation(latitude: endLatitude, longitude: endLongitude)
 var distance: CLLocationDistance = startLocation.distance(from: endLocation)

Answer 2

Swift 5+:
据我所知，有两种方法可以找到距离。 如果您正在寻找行驶距离，您可以随时使用 MKDirections。 这是查找行车距离的代码（您还可以通过更改交通类型来查找步行和公交距离）。

let sourceP = CLLocationCoordinate2DMake( sourceLat, sourceLong)
let destP = CLLocationCoordinate2DMake( desLat, desLong)
let source = MKPlacemark(coordinate: sourceP)
let destination = MKPlacemark(coordinate: destP)
        
let request = MKDirections.Request()
request.source = MKMapItem(placemark: source)
request.destination = MKMapItem(placemark: destination)

// Specify the transportation type
request.transportType = MKDirectionsTransportType.automobile;

// If you want only the shortest route, set this to a false
request.requestsAlternateRoutes = true

let directions = MKDirections(request: request)

 // Now we have the routes, we can calculate the distance using
 directions.calculate { (response, error) in
    if let response = response, let route = response.routes.first {
                print(route.distance) //This will return distance in meters
    }
 }

如果你只是在寻找空中距离/鸟瞰距离/坐标距离，你可以使用这个代码：

let sourceP = CLLocation(latitude: sourceLat, longitude: sourceLong)
let desP = CLLocation(latitude: desLat, longitude: desLong))

let distanceInMeter = sourceP.distance(from: desP)