How to pass the data from view controller to the table view controller? - ios

Question

How to pass data from view controller to table view controller? and also how to store the selected data to the table view controller? but The output shows multiple row, how to make it based on the user click at the bag? and how to pass the data inside it?
! ]2
Here my Item Detail View Controller
import UIKit
class ItemDetailViewController: UIViewController {
var items = [item]()
var name : String = ""
var price : String = ""
var imagee : String = ""
#IBOutlet weak var labelname: UILabel!
#IBOutlet weak var image: UIImageView!
#IBOutlet weak var labelprice: UILabel!
//here the button to add to the table view
#IBAction func addtobag(_ sender: Any) {
let viewController = storyboard?.instantiateViewController(withIdentifier: "BagViewController") as? BagViewController
viewController?.name = self.name
viewController?.imagee = self.imagee
viewController?.price = self.price
viewController?.items = self.items
navigationController?.pushViewController(viewController!, animated: true)
}
override func viewDidLoad() {
super.viewDidLoad()
labelname.text = name
labelprice.text = price
image.image = UIImage(named: imagee)
}
}
And here my Bag View Controller
import UIKit
class BagViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
#IBOutlet weak var totalprice: UILabel!
#IBOutlet weak var tableview: UITableView!
var items = [item]()
var name : String = ""
var price : String = ""
var imagee : String = ""
override func viewDidLoad() {
super.viewDidLoad()
tableview.delegate = self
tableview.dataSource = self
// Do any additional setup after loading the view.
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return name.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath as IndexPath) as! ShoppingTableViewCell
return cell
}
}
and here my Shopping Table View
import UIKit
class ShoppingTableViewCell: UITableViewCell {
#IBOutlet weak var dfs: UIImageView!
#IBOutlet weak var labelname: UILabel!
#IBOutlet weak var labelprice: UILabel!
#IBOutlet weak var stepperlabel: UILabel!
override func awakeFromNib() {
super.awakeFromNib()
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
#IBAction func stepper(_ sender: UIStepper) {
stepperlabel.text = String(Int(sender.value))
}
}

Answer 1

I think your logic is kind of bad, you're instantiating a VC in code but you have a segue, I recommend you pass data through the prepare function:
// MARK: - Navigation
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
// Get the new view controller using segue.destination.
if let vc = segue.destination as? BagViewController {
vc.name = self.name
vc.imagee = self.imagee
vc.price = self.price
vc.items = self.items
}
// Pass the selected object to the new view controller.
}
And in your addtobag IBAction you just will call the segue, I recommend you to use a String based segue extension String+PerformSegue.swift it lets you easily perform segue in a given ViewController like this:
#IBAction func addtobag(_ sender: Any) {
"nameOfTheSegue".performSegue(on: self)
// If you don't want to use String+PerformSegue.swift uncomment
// the next line and comment the last one.
// self.performSegue(withIdentifier: "nameOfTheSegue", sender: nil)
}