Code snippet to demonstrate simple network call using URLSession in swift.

urlSessionNetworkCall

var dataTask: URLSessionDataTask?
if var urlComponents = URLComponents(string: "https://www.example.com") {
  urlComponents.query = "paramKey=value"
    
  guard let url = urlComponents.url else {
    return
  }
    
  var defaultSession = URLSession(configuration: .default, delegate: self, delegateQueue: nil)
  dataTask = defaultSession.dataTask(with: url) { [weak self] data, response, error in
    if let error = error {
      print("An error occured: " + error.localizedDescription + "\n")
    } else if
      let data = data,
      let response = response as? HTTPURLResponse,
      response.statusCode == 200 {
        var response: JSONDictionary
        do {
          response = try JSONSerialization.jsonObject(with: data, options: []) as? JSONDictionary
          print("Network call successful: \(response)")
        } catch let parseError as NSError {
          print("Error parsing response") 
          return
        }
      }
  }
      
  dataTask?.resume()
}