Question

我有一个mapview，我添加了一个方法来在用户按下的位置放置一个图钉。标注显示图像上显示的位置地址。

screenshot of my mapview with annotation pin and callout view.

我的代码如下：

func onTapGestureRecognized(sender: UILongPressGestureRecognizer) {

    self.mapView.removeAnnotations(mapView.annotations)

    let location = tapRecognizer.location(in: mapView)
    let coordinate = mapView.convert(location,toCoordinateFrom: mapView)

    let getLat: CLLocationDegrees = coordinate.latitude
    let getLon: CLLocationDegrees = coordinate.longitude
    let theLocation: CLLocation = CLLocation(latitude: getLat, longitude: getLon)

    let geoCoder = CLGeocoder()

    geoCoder.reverseGeocodeLocation(theLocation, completionHandler: { (placemarks, error) -> Void in

        // Place details
        var placeMark: CLPlacemark!
        placeMark = placemarks?[0]
        var theLocationName = ""
        var theStreetNumber = ""
        var theStreet = ""
        var theCity = ""
        var theZip = ""
        var theCountry = ""

        // Address dictionary
        print(placeMark.addressDictionary as Any)

        // Location name
        if let locationName = placeMark.name{
            theLocationName = locationName
        }

        if let streetNumber = placeMark.subThoroughfare{
            theStreetNumber = streetNumber
        }
        // Street address
        if let street = placeMark.thoroughfare {
            theStreet = street
        }

        // City
        if let city = placeMark.locality {
            theCity = city
        }

        // Zip code
        if let zip = placeMark.postalCode{
            theZip = zip
        }

        // Country
        if let country = placeMark.isoCountryCode{
            theCountry = country
        }

        let annotation = MKPointAnnotation()
        annotation.title = theLocationName
        annotation.subtitle = theStreetNumber + " " + theStreet + ", " + theCity + ", " + theCountry + ", " + theZip
        if let location = placeMark.location {
            annotation.coordinate = location.coordinate
            // Display the annotation
            self.mapView.showAnnotations([annotation], animated: true)
        }
    })

}

正如你所看到的，当我试图通过调用行来获取位置名称（（（如果让locationName = placeMark.name）））），我只能得到地址：“5197 Yonge St”，而不是餐厅名称：“Pho 88 Restaurant”。

谁能告诉我哪里做错了？或者它根本无法实现？谢谢！

Answer 1

我不能给你一个完整的答案，但我可以指出你正确的方向。据我所见，您只会为placemarks返回一个条目，但可以使用MKLocalSearchRequest获取更完整的列表。挑战在于如何将返回的值与您想要的值完全匹配 - 也许您必须要求用户从短列表中进行选择？此外，我认为您需要指定您要搜索的机构类型。您可以在上面的完成处理程序中包含以下内容

let request = MKLocalSearchRequest()
request.naturalLanguageQuery = "restaurant"  // or whatever you're searching for
request.region = MKCoordinateRegion(center: CLLocationCoordinate2D(latitude: getLat, longitude: getLon), span: self.mapView.region.span)

let search = MKLocalSearch(request: request)
search.start { response, error in
    guard let response = response else {
        print("There was an error searching for: \(request.naturalLanguageQuery) error: \(error)")
                return
    }
    print("There are \(response.mapItems.count)")
    for item in response.mapItems {
        // You may be able to match the address to what the geoCode gives you
        // or present the user with a list of options 
        print("\(item.name), \(item.placemark)")
    }
}

当我对此进行测试时，地址并不总是匹配，即使放大也是如此 - 因此当geoCoder在1-3 Some Street返回一家餐馆时，MKLocalSearchRequest可能会给我3 Some Street {1}}

我可以用mapkit获得商店名称/餐馆名称吗？（swift）

1 个答案: