getting the index path of a cell inside UITableViewCell in swift - xcode

Question

could anyone tell me how to get the index of a cell inside its class which is uitableViewCell more specifically , inside an action function of UISwitch .
I did the following..
var cell = sender.superview?.superview as UITableViewCell
var table: UITableView = cell.superview as UITableView
let indexPath = table.indexPathForCell(cell)
but then it crashes.
what is the solution ?

Answer 1

Try this:
Assuming you have a UISwitch *cellSwitch object in cell custom class
In cellForRowAtIndexPath:
cell.cellSwitch.tag = indexPath.row
In IBAction for this switch:
let indexPath = NSIndexPath(forRow: sender.tag, inSection: 0)

Answer 2

You don't want to know the index path of the cell inside of the cell. The index path is an implementation detail of the UITableViewController. The cell should be an independent object.
What you really want to do is to assign an action to run when your switch is changed.
class MySwitchCell: UITableViewCell {
#IBOutlet weak var switchCellLabel: UILabel!
#IBOutlet weak var mySwitch: UISwitch!
//Declare an action to be run
var action: ((sender: UISwitch) -> Void)?
//then run it
#IBAction func switchAction(sender: UISwitch) {
action?(sender: sender)
}
}
Then give the action something to do when you configure the cell.
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("SwitchCell", forIndexPath: indexPath) as! MySwitchCell
cell.switchCellLabel.text = items[indexPath.row]
cell.mySwitch.on = NSUserDefaults.standardUserDefaults().boolForKey(items[indexPath.row])
cell.action = { [weak self] sender in
if let tableViewController = self {
NSUserDefaults.standardUserDefaults().setBool(sender.on, forKey: tableViewController.items[indexPath.row]) }
}
return cell
}
For example this one sets a bool in the NSUserDefaults based on the state of that switch.
You can checkout the whole sample project from https://github.com/regnerjr/SimpleCellSwitchAction