Unable to get Dictionary from JSON - json

Question

This is the code I am using but I am unable to fetch the JSON.
Error message:
Expected to decode Dictionary<String, Any> but found an array instead.
func getMovieByName(completion: #escaping (Bool, Any?, Error?) -> Void) {
guard let url = URL(string:"https://api.themoviedb.org/3/search/movie?api_key=4cb1eeab94f45affe2536f2c684a5c9e&query='star") else { return }
let session = URLSession.shared
let task = session.dataTask(with: url) { (data, _, _) in
guard let data = data else { return }
do {
let items = try JSONDecoder().decode(ItemList.self, from: data)
DispatchQueue.main.async {
completion(true, items, nil)
}
} catch {
DispatchQueue.main.async {
completion(false, nil, error)
}
}
}
task.resume()
}
JSON:
{
"page": 1,
"total_results": 2102,
"total_pages": 106,
"results": [{
"vote_count": 9052,
"id": 11,
"video": false,
"vote_average": 8.2,
"title": "Star Wars",
"popularity": 31.502792,
"poster_path": "/btTdmkgIvOi0FFip1sPuZI2oQG6.jpg",
"original_language": "en",
"original_title": "Star Wars",
"genre_ids": [
12,
28,
878
],
"backdrop_path": "/4iJfYYoQzZcONB9hNzg0J0wWyPH.jpg",
"adult": false,
"overview": "Princess Leia is captured and held hostage by the evil Imperial forces in their effort to take over the galactic Empire. Venturesome Luke Skywalker and dashing captain Han Solo team together with the loveable robot duo R2-D2 and C-3PO to rescue the beautiful princess and restore peace and justice in the Empire.",
"release_date": "1977-05-25"
}]
}
struct Results: Codable {
let id: Int
let title: String
let poster_path: String
struct ItemList: Codable {
let results: Results
}
}

Answer 1

You can create a Swift Struct for this purpose. Here is how you do it.
import Foundation
struct MovieStruct: Codable {
let page, totalResults, totalPages: Int?
let results: [Result]?
enum CodingKeys: String, CodingKey {
case page
case totalResults = "total_results"
case totalPages = "total_pages"
case results
}
}
struct Result: Codable {
let voteCount, id: Int?
let video: Bool?
let voteAverage: Double?
let title: String?
let popularity: Double?
let posterPath, originalLanguage, originalTitle: String?
let genreIDS: [Int]?
let backdropPath: String?
let adult: Bool?
let overview, releaseDate: String?
enum CodingKeys: String, CodingKey {
case voteCount = "vote_count"
case id, video
case voteAverage = "vote_average"
case title, popularity
case posterPath = "poster_path"
case originalLanguage = "original_language"
case originalTitle = "original_title"
case genreIDS = "genre_ids"
case backdropPath = "backdrop_path"
case adult, overview
case releaseDate = "release_date"
}
}
After you have created the struct, you can do something like this to parse your data.
func getMovieByName(completion: #escaping (Bool, Any?, Error?) -> Void) {
guard let url = URL(string:"https://api.themoviedb.org/3/search/movie?api_key=4cb1eeab94f45affe2536f2c684a5c9e&query='star") else { return }
let session = URLSession.shared
let task = session.dataTask(with: url) { (data, _, _) in
guard let data = data else { return }
do {
let items = try? JSONDecoder().decode(MovieStruct.self, from: jsonData)
DispatchQueue.main.async {
completion(true, items, nil)
}
} catch {
DispatchQueue.main.async {
completion(false, nil, error)
}
}
}
task.resume()
}
Note I have created the struct with the JSON which you have given. I hope it helps.

Answer 2

func getMovieByName(completion: #escaping (Bool, Any?, Error?) -> Void) {
guard let url = URL(string:"https://api.themoviedb.org/3/search/movie?api_key=4cb1eeab94f45affe2536f2c684a5c9e&query='star") else { return }
let session = URLSession.shared
let task = session.dataTask(with: url) { (data, _, _) in
guard let data = data else { return }
do {
let items = try JSONDecoder().decode(Result.self, from: data)
DispatchQueue.main.async {
completion(true, items, nil)
}
} catch {
DispatchQueue.main.async {
completion(false, nil, error)
}
}
}
task.resume()
}
Result struct contains the contents of "results"
struct Result: Codable {
var results: [Movie]
}
Add variables to correspond to the item's fields
struct Movie: Codable {
var id: Int
var vote_count: Int
var title: String
//etc..
}