从mapView获取视口坐标？regionDidChanged swift

Question

用户移动地图时会调用以下函数.

有可能获得视口吗？视口是北/东和纬度的经度和纬度.和lon.南/西.

 func mapView(mapView: MKMapView, regionDidChangeAnimated animated: Bool){
    print("The \(mapView.centerCoordinate)")
    print("the maprect \(mapView.visibleMapRect.origin)")
    print("the maprect \(mapView.visibleMapRect.size)")
    //I find just this attributes for mapView

    }

我不知道如何从我的数据中获取视口.我在www中找不到任何东西.

目的地是我使用谷歌分析记录坐标,另一个工具评估数据.

有人有想法吗？非常感谢

Answer 1

MapKit

let northEast = mapView.convertPoint(CGPoint(x: mapView.bounds.width, y: 0), toCoordinateFromView: mapView)
let southWest = mapView.convertPoint(CGPoint(x: 0, y: mapView.bounds.height), toCoordinateFromView: mapView)

谷歌地图

mapView有一个属性"projection",你可以使用"coordinateForPoint"将一个点从mapView转换为一个坐标.以下可能有效:

swift 3 for google maps

let northEast = mapView.projection.coordinate(for: CGPoint(x: mapView.layer.frame.width, y: 0))
let southWest = mapView.projection.coordinate(for: CGPoint(x: 0, y: mapView.layer.frame.height))

迅捷2

let northEast = mapView.projection.coordinateForPoint(CGPoint(x: mapWidth, y: 0 ))
let southWest = mapView.projection.coordinateForPoint(CGPoint(x: 0, y: mapHeight))

你只需要输入你的mapView宽度和高度