Table Cell Segue - ios

Question

I have a table. When I click on the cell segue should be performed. I try to use prepareForSegue and performSegueWithIdentifier, but without any result.
My code:
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if([segue.identifier isEqualToString:#"OpenB"]){
OpenBViewController *controller = (OpenBViewController *)segue.destinationViewController;
controller.address = self.selectedCellText;
[self performSegueWithIdentifier:#"OpenB" sender:self];
}
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
self.selectedCellText = [[[tableView cellForRowAtIndexPath:indexPath] textLabel] text];
[self performSegueWithIdentifier:#"OpenB" sender:self];
[tableView deselectRowAtIndexPath:indexPath animated:YES];
}

Answer 1

First of all, you shouldn't call [self performSegueWithIdentifier:#"OpenB" sender:self]; inside of -prepareForSegue: method because -prepareForSegue is called when segue is about to be performed.
Second, check that you have your segue setup correctly. Make sure you have provided the same identifier to the segue in the storyboard that you are using with -performSegueWithIdentifier:

Answer 2

Your code should be as follows:
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if([segue.identifier isEqualToString:#"OpenB"]){
OpenBViewController *controller = (OpenBViewController *)segue.destinationViewController;
controller.address = self.selectedCellText;
}
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
self.selectedCellText = [[[tableView cellForRowAtIndexPath:indexPath] textLabel] text];
[self performSegueWithIdentifier:#"OpenB" sender:self];
[tableView deselectRowAtIndexPath:indexPath animated:YES];
}
And keep in mind to setup a segue with identifier OpenB in storyboard.

Answer 3

I know this is old, but just leaving this here in case it happens to someone else.
Also, all code is in Swift 3, because my knowledge of Objective C syntax is next to nil.
The problem was most likely that the didSelectRow() method gets called after the segue was pushed. So when the prepare(ForSegue) one gets called, the selectedTextCell variable has not been properly initialized.
If you're connecting from the cell to the next ViewController via a segue created in the Interface Builder, you don't need to use didSelectRow() and probably you shouldn't, because the segue is likely to be always pushed before didSelectRow().
In that case, all you need to do is retrieve the information from the cell in the prepare() method.
The signature is:
func prepare(for segue: UIStoryboardSegue, sender: Any?)
The sender is whichever object triggers the segue. In this case, the cell that was selected. So, in prepare(), you would write something like this:
let myCell = sender as! UITableViewCell
controller.address = myCell.textLabel.text
If you need to access the row, for example, it would be:
controller.idx = self.tableView.indexPath(for: sender as! UITableViewCell)?.row
Of course, UITableViewCell can be replaced by any custom Cell class you may have.