swift 3 json from url can't get cell uitableview - ios

Question

swift 3 json from url can't problem to get cell uitableview
Episode.swift
import Foundation
class Episode
{
var title: String?
var description: String?
var thumbnailURL: URL?
var createdAt: String?
var author: String?
var url: URL?
var episodes = [Episode]()
init(title: String, description: String, thumbnailURL: URL, createdAt: String, author: String)
{
self.title = title
self.description = description
self.thumbnailURL = thumbnailURL
self.createdAt = createdAt
self.author = author
}
init(espDictionary: [String : AnyObject])
{
self.title = espDictionary["title"] as? String
description = espDictionary["description"] as? String
thumbnailURL = URL(string: espDictionary["thumbnailURL"] as! String)
self.createdAt = espDictionary["pubDate"] as? String
self.author = espDictionary["author"] as? String
self.url = URL(string: espDictionary["link"] as! String)
}
static func downloadAllEpisodes() -> [Episode]
{
var episodes = [Episode]()
let url = URL(string:"http://pallive.xp3.biz/DucBlog.json")
URLSession.shared.dataTask(with: url!) { (data, response, error) in
if error != nil {
print(error)
return
}
else {
if let jsonData = data ,let jsonDictionary = NetworkService.parseJSONFromData(jsonData) {
let espDictionaries = jsonDictionary["episodes"] as! [[String : AnyObject]]
for espDictionary in espDictionaries {
let newEpisode = Episode(espDictionary: espDictionary)
episodes.append(newEpisode)
}
}
}
}
.resume()
return episodes
}
}
EpisodeTableViewCell.swift
import UIKit
class EpisodeTableViewCell: UITableViewCell
{
var episode: Episode! {
didSet {
self.updateUI()
print(episode)
}
}
func updateUI()
{
titleLabel.text = episode.title
print(episode.title)
authorImageView.image = UIImage(named: "duc")
descriptionLabel.text = episode.description
createdAtLabel.text = "yosri hadi | \(episode.createdAt!)"
let thumbnailURL = episode.thumbnailURL
let networkService = NetworkService(url: thumbnailURL!)
networkService.downloadImage { (imageData) in
let image = UIImage(data: imageData as Data)
DispatchQueue.main.async(execute: {
self.thumbnailImageView.image = image
})
}
authorImageView.layer.cornerRadius = authorImageView.bounds.width / 2.0
authorImageView.layer.masksToBounds = true
authorImageView.layer.borderColor = UIColor.white.cgColor
authorImageView.layer.borderWidth = 1.0
}
#IBOutlet weak var thumbnailImageView: UIImageView!
#IBOutlet weak var descriptionLabel: UILabel!
#IBOutlet weak var titleLabel: UILabel!
#IBOutlet weak var createdAtLabel: UILabel!
#IBOutlet weak var authorImageView: UIImageView!
}
EpisodesTableViewController.swift
import UIKit
import SafariServices
class EpisodesTableViewController: UITableViewController
{
var episodes = [Episode]()
override func viewDidLoad()
{
super.viewDidLoad()
episodes = Episode.downloadAllEpisodes()
print(Episode.downloadAllEpisodes())
self.tableView.reloadData()
tableView.estimatedRowHeight = tableView.rowHeight
tableView.rowHeight = UITableViewAutomaticDimension
tableView.separatorStyle = .none
}
override var preferredStatusBarStyle: UIStatusBarStyle {
return .lightContent
}
// MARK: - Table view data source
override func numberOfSections(in tableView: UITableView) -> Int
{
return 1
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{
return episodes.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
{
let cell = tableView.dequeueReusableCell(withIdentifier: "Episode Cell", for: indexPath) as! EpisodeTableViewCell
let episode = self.episodes[(indexPath as NSIndexPath).row]
cell.episode = episode
return cell
}
// MARK: - UITableViewDelegate
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath:
IndexPath)
{
let selectedEpisode = self.episodes[(indexPath as NSIndexPath).row]
// import SafariServices
let safariVC = SFSafariViewController(url: selectedEpisode.url! as URL)
safariVC.view.tintColor = UIColor(red: 248/255.0, green: 47/255.0, blue: 38/255.0, alpha: 1.0)
safariVC.delegate = self
self.present(safariVC, animated: true, completion: nil)
}
// MARK: - Target / Action
#IBAction func fullBlogDidTap(_ sender: AnyObject)
{
// import SafariServices
let safariVC = SFSafariViewController(url: URL(string: "http://www.ductran.io/blog")!)
safariVC.view.tintColor = UIColor(red: 248/255.0, green: 47/255.0, blue: 38/255.0, alpha: 1.0)
safariVC.delegate = self
self.present(safariVC, animated: true, completion: nil)
}
}
extension EpisodesTableViewController : SFSafariViewControllerDelegate
{
func safariViewControllerDidFinish(_ controller: SFSafariViewController) {
controller.dismiss(animated: true, completion: nil)
}
}
whay can't show the parse json in my UITableviewCell in the app
where the problem.

Answer 1

You just need to change this downloadAllEpisodes method of Episode with closure like this.
static func downloadAllEpisodes(completion: ([Episode]) -> ()) {
var episodes = [Episode]()
let url = URL(string:"http://pallive.xp3.biz/DucBlog.json")
URLSession.shared.dataTask(with: url!) { (data, response, error) in
if error != nil {
print(error)
completion(episodes)
}
else {
if let jsonData = data ,let jsonDictionary = NetworkService.parseJSONFromData(jsonData) {
let espDictionaries = jsonDictionary["episodes"] as! [[String : AnyObject]]
for espDictionary in espDictionaries {
let newEpisode = Episode(espDictionary: espDictionary)
episodes.append(newEpisode)
}
}
completion(episodes)
}
}.resume()
}
Now call this method like this.
Episode.downloadAllEpisodes() {(episodes) -> () in
if episodes.count > 0 {
print(episodes)
self.episodes = episodes
self.tableView.reloadData()
}
}