Question

我试图找出限制我对CLGeocoder的请求数量的方法，因为我一直在超过最大限制。我得到＆＃34; 错误域= kCLErrorDomain Code = 2＆＃34;（null）＆＃34;。基本上，每当有人在func regionDidChangeAnimated中移动地图时，我得到他们所依赖的坐标，地理编码以获取城市/州，然后点击我的API，然后使用这些结果对该区域中的新地图引脚进行地理编码。有没有人有任何最佳做法来处理这种情况？非常感谢任何帮助。

查看用户是否更改了地图区域的功能：

private func mapViewRegionDidChangeFromUserInteraction() -> Bool {
let view: UIView = self.mapView.subviews[0] as UIView
//  Look through gesture recognizers to determine whether this region change is from user interaction
if let gestureRecognizers = view.gestureRecognizers {
    for recognizer in gestureRecognizers {
        if( recognizer.state == UIGestureRecognizerState.Began || recognizer.state == UIGestureRecognizerState.Ended ) {
            return true
        }
    }
 }
  return false
}

func mapView(mapView: MKMapView, regionWillChangeAnimated animated: Bool) {
mapChangedFromUserInteraction = mapViewRegionDidChangeFromUserInteraction()
if (mapChangedFromUserInteraction) {
    // user changed map region

   }
}

func mapView(mapView: MKMapView, regionDidChangeAnimated animated: Bool) {
if (mapChangedFromUserInteraction) {
    // user changed map region
    let center = mapView.centerCoordinate

    let mapLatitude = center.latitude
    let mapLongitude = center.longitude


     let locationmove = CLLocation(latitude: mapLatitude, longitude: mapLongitude)
    CLGeocoder().reverseGeocodeLocation(locationmove) { (placemarks, error) in

        if (error != nil){

            print(error)

        }else {

            if let p = placemarks?[0]{

                let locality = p.locality ?? ""
                let administrativeArea = p.administrativeArea ?? ""


                 self.mappedCity = String(locality)
                 self.mappedState = String(administrativeArea)
                 self.parseJSON("\(locality)", state: "\(administrativeArea)")
            }

        } 

     }
   }
  }

从地理编码结果解析JSON的函数：

func parseJSON(city: String, state: String){
let passedCity = city
let passedState = state
let escapedCity = passedCity.stringByAddingPercentEncodingWithAllowedCharacters(NSCharacterSet.URLQueryAllowedCharacterSet())!
let escapedState = passedState.stringByAddingPercentEncodingWithAllowedCharacters(NSCharacterSet.URLQueryAllowedCharacterSet())!

let url = NSURL(string:"http://www.API.com/api.php?city=\(escapedCity)&stateAbv=\(escapedState)&limit=10”)!

let session = NSURLSession.sharedSession()

let task = session.dataTaskWithURL(url) { (items, response, error) -> Void in

    if error != nil {

        print(error)


    }else {


        if let items = items {


            do {
                let jsonResult = try NSJSONSerialization.JSONObjectWithData(items, options: NSJSONReadingOptions.MutableContainers) as! NSDictionary

                if jsonResult.count > 0 {

                    if let datas = jsonResult["data"] as? NSArray{

                        for data in datas{

                            if let title = data["title"] as? String {

                                if let street = data["street"] as? String {

                                    if let city =  data["city"] as? String {

                                        if let stateAbv =  data["stateAbv"] as? String {

                                            if let zip =  data["zip"] as? String {

                                                self.geoAddress("\(title)", street: "\(street)", city: "\(city)", state: "\(stateAbv)", zip: "\(zip)")


                                            }
                                        }
                                    }

                                }

                            }

                        }
                    }

                }
            } catch{}


        }


    }

 }

 task.resume()

}


func geoAddress(title: String, street: String, city: String, state: String, zip: String){
let storeName = "\(title)"
let location = "\(street) \(city) \(state) \(zip)"
let geocoder = CLGeocoder();
geocoder.geocodeAddressString(location, completionHandler: {(placemarks: [CLPlacemark]?, error: NSError?) -> Void in
    if (error != nil) {
        print("Error \(error!)")
    } else if let placemark = placemarks?[0] {

        let coordinates:CLLocationCoordinate2D = placemark.location!.coordinate

        let pointAnnotation:MKPointAnnotation = MKPointAnnotation()
        pointAnnotation.coordinate = coordinates
        pointAnnotation.title = storeName
        pointAnnotation.subtitle = location

        self.mapView.addAnnotation(pointAnnotation)

     }
  })
}

Answer 1

只需将更新后的位置与旧位置进行比较，因此您获得的距离应足够高，以便发出另一个CLGeocoder请求。 Apple的文档说明了

如果要自动更新用户的当前位置（例如当用户移动时），仅发出新的地理编码请求当用户移动了很长的距离并且在合理的时间之后时间已经过去了。例如，在典型的情况下，你不应每分钟发送多个地理编码请求。

查看CLGeocoder的官方文档以获取更多信息。

CLGeocoder地理编码请求超过限制

1 个答案: