Unable to display data in the second view controller using segue [Swift] - ios

Question

I need to pass data from one view controller to another view controller. I used segue (detail) and define a model class named as "Photo".
TableViewController looks like the following:
var photos = [Photo]() //strongly typed swift array
override func viewDidLoad() {
super.viewDidLoad()
var newPhoto = Photo(name:"cat ", fileName:"cat", notes:"cat_file")
photos.append(newPhoto)
var newPhoto2 = Photo(name:"r2 ", fileName:"r2", notes:"r2")
photos.append(newPhoto2)
}
And the other view controller (DetailViewController) looks like the following:
import UIKit
class PhotoDiplayViewController: UIViewController {
var currentPhoto: Photo?
#IBOutlet weak var currentImage: UIImageView!
#IBOutlet weak var currentLabel: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
var image = UIImage(named: currentPhoto!.fileName)
self.currentImage.image = image
self.currentLabel.text = currentPhoto?.name
println(currentPhoto!.name + currentPhoto!.fileName + currentPhoto!.notes)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
When I am running the program, the table view is loading fine and if i click on any cell it is going to the detail view controller. but noting is there in the detail view controller. And I used println() to check and the output is coming in the debugger like the following:
cat cat cat_file
To pass data, I used the following segue code block:
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
var secondScene = segue.destinationViewController as! PhotoDiplayViewController
if let indexPath = self.tableView.indexPathForSelectedRow(){
let selectedPhoto = photos[indexPath.row]
secondScene.currentPhoto = selectedPhoto
}
}
But still no luck! Tried to figure out where I am missing? Can anybody tell me where I am lagging?
UPDATE: complete detail view controller class code
UPDATE: Full detail of My table view code
import UIKit
class PhotoTableViewController: UITableViewController {
var photos = [Photo]() //strongly typed swift array
override func viewDidLoad() {
super.viewDidLoad()
var newPhoto = Photo(name:"cat ", fileName:"cat", notes:"cat_file")
photos.append(newPhoto)
var newPhoto2 = Photo(name:"r2 ", fileName:"face.jpg", notes:"r2")
photos.append(newPhoto2)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// MARK: - Table view data source
override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
// #warning Potentially incomplete method implementation.
// Return the number of sections.
return 1
}
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete method implementation.
// Return the number of rows in the section.
return photos.count
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("photoCell", forIndexPath: indexPath) as! UITableViewCell
var currentPhoto = photos[indexPath.row]
cell.textLabel?.text = currentPhoto.name
return cell
}
/*
// Override to support conditional editing of the table view.
override func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool {
// Return NO if you do not want the specified item to be editable.
return true
}
*/
/*
// Override to support editing the table view.
override func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
if editingStyle == .Delete {
// Delete the row from the data source
tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: .Fade)
} else if editingStyle == .Insert {
// Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
}
}
*/
/*
// Override to support rearranging the table view.
override func tableView(tableView: UITableView, moveRowAtIndexPath fromIndexPath: NSIndexPath, toIndexPath: NSIndexPath) {
}
*/
/*
// Override to support conditional rearranging of the table view.
override func tableView(tableView: UITableView, canMoveRowAtIndexPath indexPath: NSIndexPath) -> Bool {
// Return NO if you do not want the item to be re-orderable.
return true
}
*/
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
var secondScene = segue.destinationViewController as! PhotoDiplayViewController
if let indexPath = self.tableView.indexPathForSelectedRow(){
let selectedPhoto = photos[indexPath.row]
secondScene.currentPhoto = selectedPhoto
}
}
}

Answer 1

Don't use a segue. Use this, its easier.
Follow these steps...
1: Create a Separate file called Manager.swift and place this code in it...
//manager.swift
import Foundation
struct Manager {
static var dataToPass = String()
}
2: Clean your project by pressing Shift+Command+K.
3: In the first view controller set the dataToPass to the data you want to pass...
Manager.dataToPass = self.dataToPass
4: In the second view controller retrieve the data and set the content to the dataToPass...
self.dataToReceive = Manager.dataToPass
5: Your Finished!!

Answer 2

The code which I presented is working fully after deleting all the image view and label from the storyboard and remapping. But I am wondering what was the problem. However, I want to share one screen shot:
In the screen shot, you will see 3 components: 2 labels and 1 image view. One 1 label's text is dark black colored but the for the other 2 it's not alike them. All of them are properly configured.
Still I don't know why this happens? I am not sure .... is it possible to add some hidden components on the top of storyboard??? or is it a bug of Xcode????
However, if you have similar experience please share. My aim is not only solve the problem but also to understand the cause of the problem.
:)