如何在swift 3.0中计算用户从当前位置行进的距离

Posted 2023-03-05

【中文标题】如何在swift 3.0中计算用户从当前位置行进的距离

【英文标题】：How to calculate the distance travelled by user from current location in swift 3.0

【发布时间】：2017-07-03 04:38:01

【问题描述】：

我正在使用 UImapkit 和核心定位框架 我将如何获得总折线距离和行驶时间

这是我的代码

func locationManager(_ manager: CLLocationManager!, didUpdateToLocation newLocation: CLLocation!, fromLocation oldLocation: CLLocation!) 



      if let oldLocationNew = oldLocation as CLLocation?
        let oldCoordinates = oldLocationNew.coordinate


        let newCoordinates = newLocation.coordinate
        var area = [oldCoordinates, newCoordinates]
        print(area)
        let polyline = MKPolyline(coordinates: &area, count: area.count)
        mkMapView.add(polyline)


    

//calculation for location selection for pointing annoation
    if (previousLocation as CLLocation?) != nil

        if previousLocation.distance(from: newLocation) > 10 
            addAnnotationsOnMap(newLocation)
            previousLocation = newLocation
        
    else
        //case if previous location doesn't exists
        addAnnotationsOnMap(newLocation)
        previousLocation = newLocation
    

【参考方案1】：

您可以使用CLLocation 计算两个位置之间的距离。

即

let distance = newLocation.distance(from: oldLocation)

计算出距离后，使用速度距离时间公式即可轻松计算行程时间

 speed = distance / time

因为你知道距离，如果你假设速度，你可以计算旅行所花费的时间

 time = distance / speed

希望这些东西对你有帮助。