How to parse JSON to the tableView in Swift? - ios

Question

Please give me advise, I can not figure out how to parse data in a table view properly. My goal is to make a tableView with all continents, not just with one "Africa" cell.
Here is my model:
struct ContinentRoot: Codable {
let links: ContinentMiddle
}
struct ContinentMiddle: Codable {
let continentItems: [ContinentsResponse]
}
struct ContinentsResponse: Codable {
let name: String
let href: String
}
In ViewController I add tableView, continentsArray ([ContinentRoot]) and do some regular things for networking.
I guess that the problem may be here, because in the networking method everything seems normal:
private func getContinentsList() {
guard let url = URL(string: "https://api.teleport.org/api/continents/") else { fatalError("URL failed")}
URLSession.shared.dataTask(with: url) { [weak self] (data, response, error) in
if let data = data {
guard let continent = try? JSONDecoder().decode(ContinentRoot.self, from: data) else { fatalError("DecodingError \(error!)") // REMEMBER: the highest struct
}
self?.continentsArray.append(continent)
}
DispatchQueue.main.async {
self?.tableView.reloadData()
}
}.resume()
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return continentsArray.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "ContinentsTableViewController", for: indexPath)
let model = continentsArray[indexPath.row].links.continentItems[indexPath.row].name
cell.textLabel?.text = model
return cell
}
In viewDidLoad() I call my methods:
getContinentList()
tableView.delegate = self
tableView.dataSource = self
tableView.register(ContinentsTableCell.self, forCellReuseIdentifier: "ContinentsTableViewController")
setupLayout()
Thank you so much for for attention!

Answer 1

According to your attachment design:
if continentsArray is an array of "ContinentRoot" s.
and you want to show the links in the selected ContinentRoot you must first select it, and use it like below:
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return selectedContinent.links.continentItems.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "ContinentsTableViewController", for: indexPath)
let model = selectedContinent.links.continentItems[indexPath.row].name
cell.textLabel?.text = model
return cell
}
if Not you must use your code and change this line:
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "ContinentsTableViewController", for: indexPath)
let selectedIndex = .zero // or every index you want
let model = continentsArray[indexPath.row].links.continentItems[selectedIndex].name
cell.textLabel?.text = model
return cell
}