Get with parameters in Swift

Question

first, I have to say, that there are many links here that user asked same question, but none of them helps, so please don't remove my question.

I want to videos from youtube API, there are some parameters that I should send with, first I add them into header but apparently it doesn't help.

Here is my url

let url = Url(String: "https://www.googleapis.com/youtube/v3/playlistItems")

and here are the parameters (I added to header but it's wrong)

 var request = URLRequest(url: url!)
 request.httpMethod = "GET"
 request.allHTTPHeaderFields = [
 "part" : "snippet",
 "key" : api_key,
 "playlistId": trailerPlayListId
    ]

In some post, I read that I can change URL to URLComponents and add queryItems, but when I do that, I can't add it to URLRequest, it need URL

 var request = URLRequest(url: url!)

Could anyone help me on that? Thanks

Following this, you should be able to create URL and use that url here var request = URLRequest(url: url!). — Kamran
– Kamran, Commented Aug 28, 2019 at 18:11
Possible duplicate of How can I build a URL with query parameters containing multiple values for the same key in Swift? — ZGski
– ZGski, Commented Aug 28, 2019 at 20:11

vale · Accepted Answer · 2019-08-28 19:14:47Z

I'm not sure if they're get parameters or http header field so I've added the values to both. Remove the ones you don't need.

import UIKit
import Foundation

var api_key = ""
var trailerPlayListId = ""


var url = URLComponents(string: "https://www.googleapis.com/youtube/v3/playlistItems")!
url.queryItems = [URLQueryItem(name: "part", value: "snippet"),
                              URLQueryItem(name: "key", value: api_key),
                              URLQueryItem(name: "playlistId", value: trailerPlayListId)]


let request = NSMutableURLRequest(url: url.url!)

request.httpMethod = "GET"

//not sure if these are headers or not, they look more like GET fields
request.allHTTPHeaderFields = [
  "part" : "snippet",
  "key" : api_key,
  "playlistId": trailerPlayListId
]


let dataTask = URLSession.shared.dataTask(with: request as URLRequest) {data,response,error in

  do {//TODO: Parse Response
    if let jsonResult = try JSONSerialization.jsonObject(with: data!, options: []) as? NSDictionary {
      print("data \(jsonResult)")
    }
  } catch let error as NSError {
    print(error.localizedDescription)
  }

}
dataTask.resume()

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