Question

我在使用Swift 3.0的iOS应用程序中使用Google PlacePicker API。小数点后我需要13位精度。但Google PlacePicker在小数点后返回7位数的纬度和经度。

以下是我的功能：

func pickPlace(sender: UIButton) {
    let center = CLLocationCoordinate2D(latitude: (locationManager.location?.coordinate.latitude)!, longitude: (locationManager.location?.coordinate.longitude)!)
    let northEast = CLLocationCoordinate2D(latitude: center.latitude + 0.001, longitude: center.longitude + 0.001)
    let southWest = CLLocationCoordinate2D(latitude: center.latitude - 0.001, longitude: center.longitude - 0.001)
    let viewport = GMSCoordinateBounds(coordinate: northEast, coordinate: southWest)
    let config = GMSPlacePickerConfig(viewport: viewport)
    let placePicker = GMSPlacePicker(config: config)
    placePicker.pickPlace(callback: {(place, error) -> Void in
        if let error = error {
            print("Pick Place error: \(error.localizedDescription)")
            return
        }
        if let place = place { 
            let coordinates = CLLocationCoordinate2DMake(place.coordinate.latitude, place.coordinate.longitude)
            let marker = GMSMarker(position: coordinates)
            marker.title = place.name
            marker.map = self.googleMapView
            self.googleMapView.animate(toLocation: coordinates)
            let geoCode = "\(place.coordinate.latitude),\(place.coordinate.longitude)"
            self.showGeoSelector(title: "Selected Coordinates", message: "Latitude: " + String(place.coordinate.latitude) + " Longitude: " + String(place.coordinate.longitude), geoCode: geoCode, geoLat: String(place.coordinate.latitude), geoLong: String(place.coordinate.longitude))
        }  
    }) 
}

Answer 1

试试这段代码：

let geoCode = "\(String(format: "%.18f", place.coordinate.latitude)),\(String(format: "%.18f", place.coordinate.longitude))"

希望它的帮助：）

Google PlacePicker API - 小数点后的地理坐标精度（Swift 3.0）

1 个答案: