Question

我正在尝试在屏幕加载时自动启动地图。

可以这样做吗？在视图上启动此功能确实出现。

func mapView(_ mapView: MKMapView, annotationView view: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {

    if let anno = view.annotation {
        let place = MKPlacemark(coordinate: anno.coordinate)
        let destination = MKMapItem(placemark: place)
        destination.name = "Vehicle Sighting"
        let regionDistance: CLLocationDistance = 1000
        let regionSpan = MKCoordinateRegionMakeWithDistance(anno.coordinate, regionDistance, regionDistance)

        let options = [MKLaunchOptionsMapCenterKey: NSValue (mkCoordinate: regionSpan.center), MKLaunchOptionsMapSpanKey: NSValue(mkCoordinateSpan: regionSpan.span), MKLaunchOptionsDirectionsModeKey: MKLaunchOptionsDirectionsModeDriving] as [String : Any]

        MKMapItem.openMaps(with: [destination], launchOptions: options)
    }
}

Answer 1

尝试使用这个功能，你只需要传递坐标和地名，这个工作，我在几个项目中使用它

static func openMapsAppWithLocation(coordinates:CLLocationCoordinate2D,placeName:String)
{
    let regionDistance:CLLocationDistance = 10000
    let regionSpan = MKCoordinateRegionMakeWithDistance(coordinates, regionDistance, regionDistance)
    let options = [
        MKLaunchOptionsMapCenterKey: NSValue(mkCoordinate: regionSpan.center),
        MKLaunchOptionsMapSpanKey: NSValue(mkCoordinateSpan: regionSpan.span)
    ]
    let placemark = MKPlacemark(coordinate: coordinates, addressDictionary: nil)
    let mapItem = MKMapItem(placemark: placemark)
    mapItem.name = placeName
    mapItem.openInMaps(launchOptions: options)
}

希望这有帮助

Answer 2

使用@Reinier答案的替代版本。

这显示了它如何被实现到视图控制器之前的动作中，而不需要转到下一个控制器来启动视图中的加载。我如何从邮政编码

获得坐标

var addressCode = [[String: Double]]()


@IBAction func onMapPressed(_ sender: Any) {

    let address = postCode
        let geocoder = CLGeocoder()
        geocoder.geocodeAddressString(address) {
            placemarks, error in
            let placemark = placemarks?.first
            let lat = placemark?.location?.coordinate.latitude
            let lon = placemark?.location?.coordinate.longitude
            //          let locationTitle = self.places]
            let latLon = ["latitude":lat!, "longitude": lon!]
            self.addressCode.append(latLon)

            for location in self.addressCode {
                let annotation = MKPointAnnotation()
                annotation.coordinate = CLLocationCoordinate2D(latitude: location["latitude"]!, longitude: location["longitude"]!)


                self.openMapsAppWithLocation(coordinates: annotation.coordinate, placeName: self.makeLabel.text!)
    }
}
}

在屏幕加载时启动地图功能。 iOS，Swift

2 个答案: