How to access override func tableView property from prepareForSegue method inside same class - ios

Question

I have two viewControllers.First one is a tableViewController and second one is a webViewController.I want to pass data from 1st vc to 2nd vc using segue. For this reason i wants the value of "chosenCellIndex" from override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) to prepareForSegue method. But i can not access the chosenCellIndex value from prepareForSegue method. Please help.
class NewsTableViewController: UITableViewController {
#IBOutlet var Alphacell: UITableView!
var chosenCellIndex = 0
//var temp = 0
var newspaper = ["A","B","C"]
override func viewDidLoad() {
super.viewDidLoad()
}
override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 1
}
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return newspaper.count
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("Alphacell", forIndexPath: indexPath) as UITableViewCell
cell.textLabel?.text = newspaper[indexPath.row]
// Alphacell.tag = indexPath.row
//Alphacell.addTarget(self, action: "buttonClicked:",forControlEvents: UIControlEvents.TouchUpInside)
return cell
}
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
chosenCellIndex = indexPath.row
//println(chosenCellIndex)
// Start segue with index of cell clicked
//self.performSegueWithIdentifier("Alphacell", sender: self)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
let secondViewController = segue.destinationViewController as WebViewController
secondViewController.receivedCellIndex = chosenCellIndex
println(chosenCellIndex)
}
}

Answer 1

In order to get chosen cell index you need to get indexpath for selected row, then you need to get section or row index from indexpath.
See the below code for getting row index
let indexPath = tableName.indexPathForSelectedRow
let section = indexPath?.section
let row = indexPath?.row

Answer 2

Make sure you have set the identifier on the segue in storyboard then do:
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if segue.identifier == "someIdentifier"{
let secondViewController = segue.destinationViewController as? WebViewController
//Also, make sure this is the name of the ViewController you are perfoming the segue to.
secondViewController.receivedCellIndex = chosenCellIndex
print(chosenCellIndex)
}
}
Also, what version of Xcode and Swift are you using? println() is now just print().

Answer 3

best way to do that is from did select row function, that example
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
let objects = newspaper[indexPath.row]
let vc = storyboard.instantiateViewControllerWithIdentifier("someViewController") as! UIViewController
vc.someString = objects.title
self.presentViewController(vc, animated: true, completion: nil)
}
and prepareForSegue use this code :
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
let path = self.tableView.indexPathForSelectedRow()!
segue.destinationViewController.detail = self.detailForIndexPath(path)
}