Convert Alamofire Request to URLSession Request - ios

Question

I've this JSON response -
I've followed this blog to make api call and decode the response. Their code snippet for this -
func searchPlaces(query: String) {
let urlStr = "\(mapbox_api)\(query).json?access_token=\(mapbox_access_token)"
print(urlStr)
Alamofire.request(urlStr, method: .get, parameters: nil, encoding: URLEncoding.default, headers: nil).responseSwiftyJSON { (dataResponse) in
if dataResponse.result.isSuccess {
let resJson = JSON(dataResponse.result.value!)
if let myjson = resJson["features"].array {
for itemobj in myjson ?? [] {
try? print(itemobj.rawData())
do {
let place = try self.decoder.decode(Feature.self, from: itemobj.rawData())
self.searchedPlaces.add(place)
self.tableView.reloadData()
} catch let error {
if let error = error as? DecodingError {
print(error.errorDescription)
}
}
}
}
}
if dataResponse.result.isFailure {
let error : Error = dataResponse.result.error!
}
}
}
Here they take each features item by a for loop then decode that and append that in an array. I want to convert this by using URLSession. But this part they used dataResponse.result which is not available in URLSession -
if dataResponse.result.isSuccess {
let resJson = JSON(dataResponse.result.value!)
if let myjson = resJson["features"].array {
for itemobj in myjson ?? [] {
try? print(itemobj.rawData())
do {
let place = try self.decoder.decode(Feature.self, from: itemobj.rawData())
self.searchedPlaces.add(place)
self.tableView.reloadData()
}
So how can I convert this dataResponse.result part using URLSession?
Codable structs (This is they used for alamofire request) -
struct Feature: Codable {
var id: String!
var type: String?
var matching_place_name: String?
var place_name: String?
var geometry: Geometry
var center: [Double]
var properties: Properties
}
struct Geometry: Codable {
var type: String?
var coordinates: [Double]
}
struct Properties: Codable {
var address: String?
}

Answer 1

if you want to use URLSession this is a possible solution:
let session = URLSession.shared
let url = URL(string: "https://YOUR_URL")!
let task = session.dataTask(with: url, completionHandler: { data, response, error in
// Check the response
print(response)
// Check if an error occured
if error != nil {
// HERE you can manage the error
print(error)
return
}
// Serialize the data into an object
do {
let json = try JSONDecoder().decode(FullResponse.self, from: data!)
//try JSONSerialization.jsonObject(with: data!, options: [])
print(json)
DispatchQueue.main.async {
// pass data to main thread
}
} catch {
print("Error during JSON serialization: \(error.localizedDescription)")
}
})
task.resume()
You probably need to create a struct for the FullResponse.