如何通过谷歌地图iOS API对地址进行地理编码？

Question

我找到了一种发送请求的方法:

Google Maps Geocoding API请求采用以下格式:

https://maps.googleapis.com/maps/api/geocode/outputFormat?parameters 其中outputFormat可以是以下值之一:

json(推荐)表示JavaScript Object Notation(JSON)中的输出; 或xml表示XML格式的输出要通过HTTP访问Google Maps Geocoding API,请使用:

但它真的很不方便,有什么本地方式在swift？

我查看了GMSGeocoder接口,只能通过它的API完成反向地理编码.

Answer 1

正如其他人所指出的,没有预定义的方法来进行搜索,但您可以使用网络请求自行访问Google地理编码API:

func performGoogleSearch(for string: String) {
    strings = nil
    tableView.reloadData()

    var components = URLComponents(string: "https://maps.googleapis.com/maps/api/geocode/json")!
    let key = URLQueryItem(name: "key", value: "...") // use your key
    let address = URLQueryItem(name: "address", value: string)
    components.queryItems = [key, address]

    let task = URLSession.shared.dataTask(with: components.url!) { data, response, error in
        guard let data = data, let httpResponse = response as? HTTPURLResponse, httpResponse.statusCode == 200, error == nil else {
            print(String(describing: response))
            print(String(describing: error))
            return
        }

        guard let json = (try? JSONSerialization.jsonObject(with: data)) as? [String: Any] else {
            print("not JSON format expected")
            print(String(data: data, encoding: .utf8) ?? "Not string?!?")
            return
        }

        guard let results = json["results"] as? [[String: Any]],
            let status = json["status"] as? String,
            status == "OK" else {
                print("no results")
                print(String(describing: json))
                return
        }

        DispatchQueue.main.async {
            // now do something with the results, e.g. grab `formatted_address`:
            let strings = results.compactMap { $0["formatted_address"] as? String }
            ...
        }
    }

    task.resume()
}

Answer 2

不,Google Maps SDK for iOS中没有原生方式.

这是一个非常受欢迎的功能请求,请参阅: 问题5170:功能请求:转发地理编码(从地址到坐标)

Answer 3

不幸的是，没有办法以原生方式做到这一点。我希望该功能能有所帮助。

    func getAddress(address:String){

    let key : String = "YOUR_GOOGLE_API_KEY"
    let postParameters:[String: Any] = [ "address": address,"key":key]
    let url : String = "https://maps.googleapis.com/maps/api/geocode/json"

    Alamofire.request(url, method: .get, parameters: postParameters, encoding: URLEncoding.default, headers: nil).responseJSON {  response in

        if let receivedResults = response.result.value
        {
            let resultParams = JSON(receivedResults)
            print(resultParams) // RESULT JSON
            print(resultParams["status"]) // OK, ERROR
            print(resultParams["results"][0]["geometry"]["location"]["lat"].doubleValue) // approximately latitude
            print(resultParams["results"][0]["geometry"]["location"]["lng"].doubleValue) // approximately longitude
        }
    }
}