Question

I currently have a popover that is a UITableViewController (called TableViewController) with 4 cells. Upon selecting one of the cells I would like to dismiss the popover and at the same time take a variable that is set based on the cell selection and use it as the text in a label outlet (i.e. self.styleText.text = thePopoverCellVariable;) in my other View Controller (called OtherViewController). How can I do this?

Right now this only works if I dismiss the popover by clicking outside. The code in the TableViewController.m is:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    ((OtherViewController *)self.presentingViewController).thePopoverCellVariable=theVariable;
}

And in OtherViewController.m:

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    UIStoryboardPopoverSegue *popoverSegue;
    popoverSegue = (UIStoryboardPopoverSegue *)segue;

    UIPopoverController *popoverController;
    popoverController = popoverSegue.popoverController;
    popoverController.delegate=self;
}

- (void)popoverControllerDidDismissPopover:(UIPopoverController *)popoverController {
    thePopoverCellVariable = ((StyleViewController *)popoverController.contentViewController).theVariable;
    self.styleText.text=thePopoverCellVariable;
}

Answer 1

I finally figured this out. @Jeffery Thomas has 99% of the correct answer. The other 1% is that you have to dismiss the popover from the root view controller, in this case OtherViewController. So I made popoverController a variable in the header file and implemented my code as follows

//OtherViewController.m
- (void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    UIStoryboardPopoverSegue *popoverSegue;
    popoverSegue = (UIStoryboardPopoverSegue *)segue;
    popoverController = popoverSegue.popoverController;
    pCVisible = YES;
    [[segue destinationViewController] setDelegate:self];
}

- (void) setDataFromPopover {
    if (pCVisible) {
        [popoverController dismissPopoverAnimated:YES]; // THIS IS KEY! this is where the popover is dismissed, not in the popover itself
    }
}

And…

//TableViewController.m
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    //variable = whatever

    OtherViewController *initialView;
    initialView=(OtherViewController *)self.delegate;
    initialView.theLabel.text = variable;
    [initialView setDataFromPopover];
}