How to get the selected cell index path Swift

Question

I have a table view in my VC. Inside the cell there are some lables and buttons. I passed the values in my labels, now i'm trying that when i hit a button that is also in that cell it should increment the value of the label. The value in that label is coming from previous VC. I have made a delegate for it when button is pressed, when button is pressed it should increment the value of label by the first price which is present in it. i'M TRYING to get that cell index path but not geeting it. My code is this, In my cel class i have this protocol,

protocol cartDelegate {
func addTappedInCell(_ cell: CartTableViewCell)
func minusTappedInCell(_ cell: CartTableViewCell)

}

var delegate : cartDelegate?
@IBAction func addBtnTapped(_ sender: Any) {

    delegate?.addTappedInCell(self)
}

@IBAction func minusBtnTapped(_ sender: Any) {

   delegate?.minusTappedInCell(self)
}

and in my view controller i'm trying this,

extension CartViewController : cartDelegate{

func addTappedInCell(_ cell: CartTableViewCell) {


    guard let indexPath = cartTableView?.indexPath(for: cell) else { return }

    print(indexPath)

    total += 1
    cell.totalLbl.text = String(total)
    print(cell.priceLbl.text!)
    count = "5"

    let tPrice = cell.priceLbl.text! + count
    print(tPrice)
    cell.priceLbl.text = String(tPrice)
    subTotalLbl.text = cell.priceLbl.text

}

func minusTappedInCell(_ cell: CartTableViewCell) {
    total -= 1
    cell.totalLbl.text = String(total)
    price = Int(cell.priceLbl.text!)! - Int(count)!
    cell.priceLbl.text = String(price)
    subTotalLbl.text = cell.priceLbl.text
}

I'm not getting the indexPath of that cell which button is pressed. This is how my screen looks,

Take a look at [this answer](https://stackoverflow.com/a/42043277/1630618). — vacawama, Mar 01 '18 at 22:56
what do you want to do with index as you have cell reference and updating value for the cell correctly? — Harshal Bhavsar, Mar 02 '18 at 01:24
i'm trying to update the value of price when + button hits and its should only increment that cell price which button is hit. @HarshalBhavsar — Hamza, Mar 02 '18 at 01:36

Shehata Gamal · Answer 1 · 2018-03-02T14:46:04.750

1

Inside the custom cell class declare a var

   var cellIndex:NSIndexPath?

and in cellForRow set it

   cell.cellIndex = indexPath

and then access it anywhere

OR directly use

 var index = tableView.indexPath(for:cell)

edited Mar 02 '18 at 14:46

answered Mar 01 '18 at 22:43

Shehata Gamal

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how can i increment the price of that label of which button is hit? @Sh_Khan – Hamza Mar 01 '18 at 22:51
with cellIndex here , you can get the the value assigned to the label from the model array , increment it and set it to the label but also override it to the old one in the array as user may scroll and last increment lost – Shehata Gamal Mar 01 '18 at 22:56
how to ovveride that? @Sh_Khan – Hamza Mar 01 '18 at 22:58
write the new value (the incremented one ) to the same index of the array that you read the old from – Shehata Gamal Mar 01 '18 at 22:59
Bro i have printed the print(cell.cellIndex), and it shows this in console Optional( {length = 2, path = 0 - 1}) . and when added the value it shows me this result, 7.07.0 . @Sh_Khan – Hamza Mar 01 '18 at 23:02
assign it to the label – Shehata Gamal Mar 01 '18 at 23:05
it should come 14 bcz i have added 7.0 + 7.0 but it is coming7.07.0 . @Sh_Khan – Hamza Mar 01 '18 at 23:09
you add it as string or float ??? , re check the addition – Shehata Gamal Mar 01 '18 at 23:11
The are string. @Sh_Khan – Hamza Mar 01 '18 at 23:14
convert them to float add them then convert result to string – Shehata Gamal Mar 01 '18 at 23:15
let me try it, can u please confirm me that when i hit any cell + button it will increment only that cell values? @Sh_Khan – Hamza Mar 01 '18 at 23:19
yes, if you only changed the index of the array corresponding to that cell only – Shehata Gamal Mar 01 '18 at 23:22
how can i change that index? @Sh_Khan – Hamza Mar 01 '18 at 23:23
How can i changed that index for the array? – Hamza Mar 01 '18 at 23:31
re-assign the new calculated value to that index you read the value from like this arr[index] = newValue – Shehata Gamal Mar 01 '18 at 23:40
Bro the problem is coming that i'm not getting the index path when i press the button. @Sh_Khan – Hamza Mar 01 '18 at 23:47
cellIndex is the indexPath use it to index the array – Shehata Gamal Mar 01 '18 at 23:49
this is my array of in cellForRow where i'm assigning the value cell.priceLbl.text = ItemDataSource.sharedInstance.items[indexPath.row].price! where should i give cellIndex? @Sh_Khan – Hamza Mar 01 '18 at 23:58
access it inside **addTappedInCell** as cell.cellIndex and use it to index the array – Shehata Gamal Mar 02 '18 at 00:06
i have used it is showing an error, ItemDataSource.sharedInstance.items[cell.cellIndex].addPrice – Hamza Mar 02 '18 at 00:20
you forget .row Use **ItemDataSource.sharedInstance.items[cell.cellIndex.row].addPrice** – Shehata Gamal Mar 02 '18 at 00:25
showing me this error.Expression resolves to an unused l-value. @Sh_Khan – Hamza Mar 02 '18 at 00:45

How to get the selected cell index path Swift

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