使用MapKit和Swift在给定地址中打开地图

Question

我在Swift 3中理解Apple的MapKit时遇到了一些麻烦.

我在这里找到了一个例子:如何用swift中的坐标以编程方式打开地图App？

public func openMapForPlace(lat:Double = 0, long:Double = 0, placeName:String = "") {     
    let latitude: CLLocationDegrees = lat
    let longitude: CLLocationDegrees = long

    let regionDistance:CLLocationDistance = 100
    let coordinates = CLLocationCoordinate2DMake(latitude, longitude)
    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)
}

这绝对是游泳,除了在这种情况下我需要使用地址而不是坐标.

我已经找到了使用谷歌地图做到这一点的方法,但我似乎无法找到Apple地图的具体答案,如果它存在,我已经完成了它的上釉.

如果有人能帮助我理解正确的方法是什么,那将是惊人的.我正在使用:

• Xcode 8.3.1
• Swift 3.1
• 苹果系统
• 针对iOS 10+

Answer 1

您需要使用地理编码服务将地址转换为相应的地理位置.

例如,将此函数添加到您的工具包:

func coordinates(forAddress address: String, completion: @escaping (CLLocationCoordinate2D?) -> Void) {
    let geocoder = CLGeocoder()
    geocoder.geocodeAddressString(address) { 
        (placemarks, error) in
        guard error == nil else {
            print("Geocoding error: \(error!)")
            completion(nil)
            return
        }
        completion(placemarks.first?.location?.coordinate)
    }
}

然后像这样使用它:

coordinates(forAddress: "YOUR ADDRESS") { 
    (location) in
    guard let location = location else {
        // Handle error here.
        return
    }
    openMapForPlace(lat: location.latitude, long: location.longitude) 
}

Answer 2

您需要使用geoCode来从地址获取坐标...这应该可以工作：

let geocoder = CLGeocoder()

geocoder.geocodeAddressString("ADDRESS_STRING") { (placemarks, error) in

  if error != nil {
    //Deal with error here
  } else if let placemarks = placemarks {

    if let coordinate = placemarks.first?.location?.coordinate {
       //Here's your coordinate
    } 
  }
}