在搜索位置时，如何确定字符串是自然语言还是地址？

Question

我正在尝试实现一个像搜索栏一样的苹果地图，让用户能够找到一个特定的位置或地址，并在搜索到的位置保存一个别针。现在，我了解了如何获取自然语言中的地址，以及如何从地址中获取坐标。但我不知道如何有效地解析字符串并知道发出哪个请求。我在网上找不到任何东西，只有关于电子邮件地址的文章。任何强调标准/良好实现的信息都将不胜感激！

Answer 1

您可以使用CLGeocoder检查字符串是否为位置。你可以这样格式化你的代码：

var geocoder = CLGeocoder()
        geocoder.geocodeAddressString(address) { (placemarks, error) -> Void in
            if let placemark = placemarks![0] as? CLPlacemark  {
                print("place")
            } else {
                print("string")
            }
        }

但是，如果在大型阵列上使用，这可能是密集型的。但作为搜索栏应该没问题！

Answer 2

多亏了Maclean和Location Manager by Varshyl Mobile。注意:这是我能够想出的解决我的问题的答案；在弹出正确的自然语言位置方面仍然存在问题。

let geocoder = CLGeocoder()
geocoder.geocodeAddressString(address as String, completionHandler: {(placemarks: [CLPlacemark]?, error: NSError?) -> Void in

        if (error != nil) {
            print("error")
        }
        else{
            if let placemark = placemarks?.first {
                let address = AddressParser()
                address.parseAppleLocationData(placemark)
                let addressDict = address.getAddressDictionary()
                print("searched address")
                print(addressDict)
            }
            else {
                print("invalid address")
            }
        }

    })

下面是我在上面提到的库中使用的类/函数。

private class AddressParser: NSObject{

 private var latitude = NSString()
 private var longitude  = NSString()
 private var streetNumber = NSString()
 private var route = NSString()
 private var locality = NSString()
 private var subLocality = NSString()
 private var formattedAddress = NSString()
 private var administrativeArea = NSString()
 private var administrativeAreaCode = NSString()
 private var subAdministrativeArea = NSString()
 private var postalCode = NSString()
 private var country = NSString()
 private var subThoroughfare = NSString()
 private var thoroughfare = NSString()
 private var ISOcountryCode = NSString()
 private var state = NSString()


override init(){

    super.init()

}

private func getAddressDictionary()-> NSDictionary{

    let addressDict = NSMutableDictionary()

    addressDict.setValue(latitude, forKey: "latitude")
    addressDict.setValue(longitude, forKey: "longitude")
    addressDict.setValue(streetNumber, forKey: "streetNumber")
    addressDict.setValue(locality, forKey: "locality")
    addressDict.setValue(subLocality, forKey: "subLocality")
    addressDict.setValue(administrativeArea, forKey: "administrativeArea")
    addressDict.setValue(postalCode, forKey: "postalCode")
    addressDict.setValue(country, forKey: "country")
    addressDict.setValue(formattedAddress, forKey: "formattedAddress")

    return addressDict
}


private func parseAppleLocationData(placemark:CLPlacemark){

    let addressLines = placemark.addressDictionary!["FormattedAddressLines"] as! NSArray

    //self.streetNumber = placemark.subThoroughfare ? placemark.subThoroughfare : ""
    self.streetNumber = (placemark.thoroughfare != nil ? placemark.thoroughfare : "")!
    self.locality = (placemark.locality != nil ? placemark.locality : "")!
    self.postalCode = (placemark.postalCode != nil ? placemark.postalCode : "")!
    self.subLocality = (placemark.subLocality != nil ? placemark.subLocality : "")!
    self.administrativeArea = (placemark.administrativeArea != nil ? placemark.administrativeArea : "")!
    self.country = (placemark.country != nil ?  placemark.country : "")!
    self.longitude = placemark.location!.coordinate.longitude.description;
    self.latitude = placemark.location!.coordinate.latitude.description
    if(addressLines.count>0){
        self.formattedAddress = addressLines.componentsJoinedByString(", ")}
    else{
        self.formattedAddress = ""
    }


}