I have a problem and I do not know how to solve it, I have a json that I keep in a variable and I would like to list it in a TableView. So far I have learned how to do it by downloading the json but never locally. I attach my code:
CoreDataViewController.swift (here is my table)
import UIKit
class CoreDataViewController: UIViewController, UITableViewDataSource, UITableViewDelegate, DatosModeloProtocol {
var itemStruct: NSArray = NSArray()
var selectPersona: DetalleJSON = DetalleJSON()
@IBOutlet weak var listaTableView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
self.listaTableView.delegate = self
self.listaTableView.dataSource = self
let datosModelo = DatosModelo()
datosModelo.delegate = self
datosModelo.downloadItems()
// Do any additional setup after loading the view.
}
func itemsJSON(items: NSArray) {
itemStruct = items
self.listaTableView.reloadData()
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return itemStruct.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! CoreDataTableViewCell
let item: DetalleJSON = itemStruct[indexPath.row] as! DetalleJSON
// cell.lblID!.text = item.id
cell.lblNombre!.text = item.nombre
cell.lblAlias!.text = item.alias
cell.lblFechaNac!.text = item.fechaNac
cell.lblPosicion!.text = item.posicion
return cell
}
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
// Get the new view controller using segue.destination.
// Pass the selected object to the new view controller.
}
*/
}
DatosModelo.swift (the protocol)
import UIKit
protocol DatosModeloProtocol: class{
func itemsJSON (items: NSArray)
}
class DatosModelo: NSObject {
weak var delegate: DatosModeloProtocol!
let urlPath = "{
"respuestas": [
{
"id": 1,
"nombre": "Miguel Cervantes",
"fechaNac": "8/Dic/1990",
"posicion": "Desarrollador",
"alias": "preg1"
},
{
"id": 2,
"nombre": "Juan Morales",
"fechaNac": "03/Jul/1990",
"posicion": "Diseñador",
"alias": "preg2"
},
{
"id": 3,
"nombre": "Roberto Méndez",
"fechaNac": "14/Dic/1990",
"posicion": "Desarrollador",
"alias": "preg3"
},
{
"id": 4,
"nombre": "Miguel Cuevas",
"fechaNac": "08/Dic/1990",
"posicion": "Programador",
"alias": "preg4"
}
]
}"
func downloadItems() {
let url: URL = URL (string: urlPath)!
let defaultSession = Foundation.URLSession(configuration: URLSessionConfiguration.default)
let task = defaultSession.dataTask(with: url){
(data, response, error) in
if error != nil{
print("Error al descargar datos")
}else{
print("Datos descargados")
self.parseJSON(data!)
}
}
task.resume()
}
func parseJSON(_ data:Data){
var jsonResult = NSArray()
do{
jsonResult = try JSONSerialization.jsonObject(with: data, options: JSONSerialization.ReadingOptions.allowFragments) as! NSArray
}catch let error as NSError{
print(error)
}
var jsonElement = NSDictionary()
let detalles = NSMutableArray()
for i in 0 ..< jsonResult.count
{
jsonElement = jsonResult[i] as! NSDictionary
let detalle = DetalleJSON()
let id = jsonElement["id"]
let nombre = jsonElement["nombre"]
let fechaNac = jsonElement["fechaNac"]
let posicion = jsonElement["posicion"]
let alias = jsonElement["alias"]
detalle.id = id as? Int
detalle.nombre = nombre as? String
detalle.fechaNac = fechaNac as? String
detalle.posicion = posicion as? String
detalle.alias = alias as? String
detalles.add(detalle)
}
DispatchQueue.main.async(execute: { () -> Void in
self.delegate.itemsJSON(items: detalles)
})
}
}
DetalleJSON.swift
import UIKit
class DetalleJSON: NSObject {
var id: Int?
var nombre: String?
var fechaNac: String?
var posicion: String?
var alias: String?
override init() {
}
init(id: Int, nombre: String, fechaNac: String, posicion: String, alias: String){
self.id = id
self.nombre = nombre
self.fechaNac = fechaNac
self.posicion = posicion
self.alias = alias
}
override var description: String{
return "id: \(id), nombre: \(nombre), fechaNac: \(fechaNac), posicion: \(posicion), alias: \(alias)"
}
}
CoreDataTableViewCell.swift
import UIKit
class CoreDataTableViewCell: UITableViewCell {
@IBOutlet weak var lblNombre: UILabel!
@IBOutlet weak var lblFechaNac: UILabel!
@IBOutlet weak var lblID: UILabel!
@IBOutlet weak var lblAlias: UILabel!
@IBOutlet weak var lblPosicion: UILabel!
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
}
Thank you very much for reading my question, and for the support.
