Changing Labels in DetailVC from tableView - swift

Question

I’m trying to make changes to a label in a DetailViewController, depending on which row we click:
That is how my test App looks
For example, if we click Ferrari I want to display:
“Wow , it's a beautiful red Ferrari of the year… blablabla..”
But if you click another instead:
“I’m the label of the…. car”
Essentially, one description for each car.
How do I change the label?
My code :
class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
#IBOutlet weak var tableView: UITableView!
var valueToPass : String!
//crear un color
let medOrange: UIColor = UIColor(red: 0.973, green: 0.388, blue: 0.173, alpha: 1)
var vehicleData : [String] = ["Ferrari 458" , "Lamborghini Murcielago" , "Bugatti Veyron", "Mercedes Benz Biome"]
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
var nib = UINib(nibName: "TableViewCell", bundle: nil)
tableView.registerNib(nib, forCellReuseIdentifier: "cell")
//Propiedades de la tableView
self.tableView.backgroundColor = medOrange
self.tableView.separatorStyle = UITableViewCellSeparatorStyle.None
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return vehicleData.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell:TableViewCell = self.tableView.dequeueReusableCellWithIdentifier("cell") as TableViewCell
cell.lblCarName.text = vehicleData[indexPath.row]
cell.imgCar.image = UIImage(named: vehicleData[indexPath.row])
cell.backgroundColor = medOrange
return cell
}
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
println("Has seleccionado la celda #\(indexPath.row)!")
//Obtener la label de la celda
let indexPath = tableView.indexPathForSelectedRow()
let currentCell = tableView.cellForRowAtIndexPath(indexPath!) as UITableViewCell!
valueToPass = currentCell.textLabel?.text
performSegueWithIdentifier("DetailView", sender: self)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if(segue.identifier == "DetailView") {
var vc = segue.destinationViewController as DetailViewController
vc.passedValue = valueToPass
}
}
func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
return 100
}
import UIKit
class DetailViewController: UIViewController {
var passedValue : String!
#IBOutlet weak var lblDetail: UILabel!
#IBOutlet weak var imgDetail: UIImageView!
override func viewDidLoad() {
super.viewDidLoad()
}

Answer 1

From what I can see you did all well and the only part missing in your code is setting passedValue to label in your DetailViewController so just add the following in viewDidLoad method
override func viewDidLoad() {
super.viewDidLoad()
lblDetail.text = passedValue
}
EDITED:
To pass description to DetaliViewContorller you have to store it somehow first and the best way to do it is by declaring a struct that holds both name and description
struct Vehicle {
var vehicleName : String
var vehicleDescription : String
}
Then your vehicleData array should contain objects of type Vehicle
var vehicleData : [Vehice] = [Vehicle(vehicleName : "Ferrari 458",vehicleDescription : "Ferrari desc" ), //Add all vehicles like this...]
And finally passedValue must be initialized like this
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
valueToPass = vehicleData[indexPath.row].vehicleDescription
performSegueWithIdentifier("DetailView", sender: self)
}

Answer 2

its Simple do the following steps:
add one more array with the details text in the details view controller.
when user click on the row you need to get the index.row and pass it to your details view controller.
retrive data from your number 1 step array using index path.
add it to your Lable.
and must set your Lable.text in the ViewDidLoad method.