CODEWITHSUNDEEP
iosuitableviewsegue
Orkhan Alizade
Orkhan Alizade

Reputation: 7569

Passing indexPath of the tableView cell to the another controller

I want to pass the select row as indexPath to the another controller. for that i have write following code:

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) as UITableViewCell

    let indexPath = tableView.indexPathForSelectedRow();

    return cell
}


override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    var secondController: SecondViewController = segue.destinationViewController as SecondViewController
    secondController.rowIndex.text = indexPath
}

But my indexPath is nil. Why?

Upvotes: 0

Views: 1424

Answers (3)

Jatin Patel - JP
Jatin Patel - JP

Reputation: 3733

To satisfied your requirement do the following things.

Step 1 : Declare globle variable(that scope is within class).

like var selectedIndexForRow:Int? = nil

var selectedIndexForSection:Int? = nil

Step 2 : Override didSelectRowAtIndexPath.

override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
  tableView.deselectRowAtIndexPath(indexPath, animated: true)

selectedIndexForRow = indexPath.row;
selectedIndexForSection = indexPath.section;


}

Step 3: Pass selectedIndexForRow and selectedIndexForSection variables to another controller

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
var secondController: SecondViewController = segue.destinationViewController as SecondViewController
secondController.row= selectedIndexForRow
secondController.section= selectedIndexForSection
}

Upvotes: 0

Schrodingrrr
Schrodingrrr

Reputation: 4271

The sender here in prepareForSegue is the UITableViewCell that you have selected.

Simply typecast it to UITableViewCell and then call indexPathForCell on your tableView. That will return you the indexPath of the selected cell. No need for additional variables, global or otherwise.

I'm sorry I cannot post any Swift code. I am proficient in Obj-c but I don't know Swift yet.

Sample code for Obj-C is as follows. I hope you'll write the Swift equivalent yourself, or somebody here will edit it in.

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {

    UITableViewCell* cell = (UITableViewCell*)sender;

    NSIndexPath* indexPath = [self.tableView indexPathForCell:cell];

    //Use indexPath as you intend to
}

Upvotes: 0

Javier Flores Font
Javier Flores Font

Reputation: 2093

In cellForRowAtIndexPath , this is wrong:

let indexPath = tableView.indexPathForSelectedRow();

For each row you are saving the selected row in a variable which will be destroyed after cellForRowAtIndexPath finishes, because it is not retained by any object.

You just need this in prepareForSegue

var secondController: SecondViewController = segue.destinationViewController as SecondViewController
if let selectedIndexPath =  tableView.indexPathForSelectedRow();
    secondController.rowIndex= selectedIndexPath.row

Haven't tested, but think this will work. Hope it helps.

Upvotes: 2

Related Questions