从 mapView 获取视口坐标？ regionDidChanged swift

Question

当用户移动地图时调用以下函数。

可以获取视口吗？视口是 north/east 的经纬度和纬度。和隆。共 south/west.

 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.

上找不到任何东西

目的是我使用 google 分析记录坐标，并使用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)

google地图

mapView 有一个属性 "projection"，您可以在其中使用 "coordinateForPoint" 将点从 mapView 转换为坐标。所以以下可以工作：

swift 3 for google 地图

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))

swift 2

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

您只需输入您的 mapView 宽度和高度

Answer 2

基于

Swift 3 MapKit

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

从 mapView 获取视口坐标？ regionDidChanged swift

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