Ios 计算核心位置swift的行程距离

我有一个像Uber应用程序一样计算旅行距离的应用程序。当驾驶员开始行程时，位置开始改变，即使在搜索乘坐过程中指定了起点，驾驶员也可以决定通过替代路线或经过较长的地点和路线，因为他/她不知道最短路线，那么我如何计算总距离

起始位置是指驾驶员点击开始按钮的位置 结束位置是驾驶员按下停止按钮的位置

这是到目前为止我的代码

    public func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        lastLocation = locations.last!
        endTrip(locations.last)

        if !hasSetInitialLocation {

            let camera = GMSCameraPosition.camera(withTarget: lastLocation!.coordinate, zoom: 17)
            self.mapView.animate(to: camera)
            hasSetInitialLocation = true
            endTrip(lastLocation)
            MqttManager.instance.connectToServer()
        }
    }



func endTrip(endLoaction: CLLocation) {
        guard let statusChange = source.getStatusChange() else{return}
        var distanceTraveled: Double = 0.0
        let initialLocation = CLLocation(latitude: (statusChange.meta?.location?.lat)!, longitude: (statusChange.meta?.location?.lng)!)
        let distance = initialLocation.distance(from: endLoaction)
        distanceTraveled += distance
        let distanceInKM = Utility.convertCLLocationDistanceToKiloMeters(targetDistance: distanceTraveled)
}

---

我如何计算距离以反映驾驶员移动的总距离，因为从拟定起点到终点的路线可能会发生变化

司机按下一个叫开始行程的按钮，我想知道从那个时刻到他按下结束行程按钮的那一刻的距离

这种实现可以从类似的工作代码中获得，但唯一的区别是，它们是在该点传递坐标的开始按钮和作为坐标终点的停止坐标

enum DistanceValue: Int {
                case meters, miles
            }

            func calculateDistanceBetweenLocations(_ firstLocation: CLLocation, secondLocation: CLLocation, valueType: DistanceValue) -> Double {
                var distance = 0.0
                let meters = firstLocation.distance(from: secondLocation)
                distance += meters
                switch valueType {
                case .meters:
                    return distance
                case .miles:
                    let miles = distance
                    return miles
                }
            }

    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
            if startLocation == nil {
                startLocation = locations.first
            } else if let location = locations.last {
                runDistance += lastLocation.distance(from: location)
                let calc = calculateDistanceBetweenLocations(lastLocation, secondLocation: location, valueType: .meters)

                print("TOTAL LOC 1 \(calc)")
                print("TOTAL LOC 2 \(runDistance)")
            }
            lastLocation = locations.last

        }

如我的打印报表

print（“LOC 1总计\（计算）”）所示
打印（“总LOC 2\（跑步距离）”）

我如何才能

calc

与

runDistance

以下是控制台中打印的内容

TOTAL LOC 10.29331530774379
TOTAL LOC 2 10.29331530774379
TOTAL LOC 2.2655118031831587
TOTAL LOC 2 12.558827110926948

---

如果使用第一个和最后一个坐标获得这样的距离，它总是返回错误的值，因为它无法识别实际的行进路径

我使用以下代码解决了相同的问题。

使用谷歌地图

> pod 'GoogleMaps'

当驾驶员在路线上移动时，创建坐标数组

var arr = [Any]() 
// Driving lat long co-ordinateds continues add in this array according to your expectation either update location or perticuler time duration.

// make GMSMutablePath of your co-ordinates
let path = GMSMutablePath()

    for obj in arr{

        print(obj)

        if let lat = (obj as? NSDictionary)?.value(forKey: PARAMETERS.LET) as? String{

            path.addLatitude(Double(lat)!, longitude: Double(((obj as? NSDictionary)?.value(forKey: PARAMETERS.LONG) as? String)!)!)

        }
    }

print(path) // Here is your traveling path
let km = GMSGeometryLength(path)
print(km) // your total traveling distance.

我在应用程序中完成了，它运行良好。 希望它能帮助你：）

或不使用谷歌地图

但是，根据代码，您必须为自己提供位置，一个CLLocationCoordinate2D数组

class ViewController: UIViewController, CLLocationManagerDelegate, MKMapViewDelegate {
    // MARK: - Variables
    let locationManager = CLLocationManager()

    // MARK: - IBOutlet
    @IBOutlet weak var mapView: MKMapView!

    // MARK: - IBAction
    @IBAction func distanceTapped(_ sender: UIBarButtonItem) {
        let locations: [CLLocationCoordinate2D] = [...]
        var total: Double = 0.0
        for i in 0..<locations.count - 1 {
            let start = locations[i]
            let end = locations[i + 1]
            let distance = getDistance(from: start, to: end)
            total += distance
        }
        print(total)
    }

    func getDistance(from: CLLocationCoordinate2D, to: CLLocationCoordinate2D) -> CLLocationDistance {
        // By Aviel Gross
        // https://stackoverflow.com/questions/11077425/finding-distance-between-cllocationcoordinate2d-points
        let from = CLLocation(latitude: from.latitude, longitude: from.longitude)
        let to = CLLocation(latitude: to.latitude, longitude: to.longitude)
        return from.distance(from: to)
    }
}

类ViewController:UIViewController、CLLocationManagerDelegate、MKMapViewDelegate{
//标记：-变量
让locationManager=CLLocationManager（）
//标记：-IBOutlet
@ibvar映射视图：MKMapView！
//标记：-IBAction
@iAction func distanceTapped（uu发送方：UIBarButtonItem）{
let位置：[CLLocationCoordinate2D]=[…]
var总计：双倍=0.0
对于0..CLLocationDistance中的i{
//阿维埃尔·格罗斯
// https://stackoverflow.com/questions/11077425/finding-distance-between-cllocationcoordinate2d-points
let from=CLLocation（纬度：from.lation，经度：from.longitude）
let to=CLLocation（纬度：至。纬度，经度：至。经度）
返回距离（从：到）
}
}

输出

---

一个简单的函数，用于计算给定CLLocationCoordinate2D数组的距离（以米为单位）。使用

reduce

代替数组迭代

func computeDistance(from points: [CLLocationCoordinate2D]) -> Double {
    guard let first = points.first else { return 0.0 }
    var prevPoint = first
    return points.reduce(0.0) { (count, point) -> Double in
        let newCount = count + CLLocation(latitude: prevPoint.latitude, longitude: prevPoint.longitude).distance(
            from: CLLocation(latitude: point.latitude, longitude: point.longitude))
        prevPoint = point
        return newCount
    }
}

---

但是你的问题是什么？我如何计算距离以反映驾驶员移动的总距离？这不只是连接位置点并使用

CLLocationDistance

和

CLLocationCoordinate2D

计算整个距离的问题吗？我想你需要经常检查当前位置并进行比较添加到上一个，并将距离添加到total@ElTomato但是，如果你绕街区转一圈，行程有多远？也许是一个哲学问题：）？@King Most Welcome亲爱的，你的问题也值得+1:）谢谢。这个解决方案适用于人们可能遇到的许多问题have@King是的，肯定是：）