Question

我正在尝试使用touchesBegan函数和tapGesture获取地图上点的坐标，但我得到的坐标表示与地图上选定点不同的点。有什么帮助吗？

override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {

        let tapGesture = UITapGestureRecognizer(target: self, action: nil)
        let touchPoint = tapGesture.locationInView(self.myMap)
        let location = self.myMap.convertPoint(touchPoint, toCoordinateFromView: self.myMap)

        let mySpan:MKCoordinateSpan = MKCoordinateSpanMake(0.5, 0.5)
        let region:MKCoordinateRegion = MKCoordinateRegionMake(location, mySpan)
        self.myMap.setRegion(region, animated: true)

        lblLat.text = String(location.latitude)
        lblLng.text = String(location.longitude)

    }

Answer 1

用以下代码替换您的代码：

func tapGestureOnMap(gestureRecognizer: UITapGestureRecognizer) {   
        let touchLocation = gestureRecognizer.locationInView(mapView)
        let locationCoordinate = mapView.convertPoint(touchLocation, toCoordinateFromView: mapView)
        print("Tapped at lat: \(locationCoordinate.latitude) long: \(locationCoordinate.longitude)")
}

在viewDidLoad中，在地图视图中添加tapGesture，如下所示：

let tapGestureOnMap = UITapGestureRecognizer(target: self, action: "tapGestureOnMap:")
mapView.addGestureRecognizer(tapGestureOnMap)

选择地图上的位置会给出错误的坐标

1 个答案: