passing object data between viewcontrollers in swift - ios

Question

I'm learning how to pass object data between viewcontrollers, and my source is:
firstly the class which represents the objects Flyer
class Flyer{
var title: String!
var desc: String!
var imageUrl: String!
init(dictionary: [String: AnyObject]) {
title = dictionary["title"] as? String
desc = dictionary["desc"] as? String
imageUrl = dictionary["imageUrl"] as? String
}
}
now the mainViewController class:
class MainViewController: UIViewController, UITableViewDataSource {
#IBOutlet var tableview:UITableView!
let apiClient = ApiClient()
var flyers: [Flyer]!
override func viewWillAppear(animated: Bool) {
super.viewWillAppear(animated)
apiClient.mainService.getList() { flyers, error in
if flyers != nil {
self.flyers = flyers
self.tableview.reloadData()
} else {
print("error: \(error)")
}
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.flyers?.count ?? 0
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) ->UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("mainObjectCell") as! MainTableViewCell
cell.mainObject = self.flyers?[indexPath.row]
return cell
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if segue.identifier == "detailSegue" {
let detailViewController = segue.destinationViewController as! DetailMainViewController
if let indexPath = tableView.indexPathForCell(sender as! MainTableViewCell) {
detailViewController.detailString = self.flyers?[indexPath.row]
}
}
}
}
the output of this class is an error, ambiguous use of tableview(_:numbersOfRowsInSection:) in the let indexPath
the detailViewController class:
class DetailMainViewController: UIViewController {
#IBOutlet weak var detailMainLabel: UILabel!
var detailString: String?
var receivedCellIndex = 0
override func viewDidLoad() {
super.viewDidLoad()
detailMainLabel.text = detailString
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
}
I would like to know how to solve the error in the mainViewController class and how to pass the desc property of the flyer object to the detailViewController and show it in the label field