Pass Index Number between UITableView List segue

ios5, objective-c, segue, uitableview

Solution

What you are describing can best be done in the `prepareForSegue:sender:` method, instead of `didSelectRowAtIndexPath:`. In your storyboard, make sure your `HomeworkDetailsSegue` segue is set up between your tableView's prototype cell and the destination view controller.

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{    
    if ([segue.identifier isEqualToString:@"HomeworkDetailsSegue"]) {

        // note that "sender" will be the tableView cell that was selected
        UITableViewCell *cell = (UITableViewCell*)sender;
        NSIndexPath *indexPath = [self.tableView indexPathForCell:cell];

        HomeworkDetails *vc = (HomeworkDetails*)[segue destinationViewController];
        vc.currentIndex = indexPath.row;
    }
}

Also, as a matter of style, I would recommend renaming your HomeworkDetails class to HomeworkDetailsViewController. Doing this follows Apple's conventions more closely and makes it clearer what the class represents.

Problem

When I click a certain list item in my UITableView, I want to pass the index of the item that I clicked on to the next detailed view. This is my relevant code so far: ``` - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { HomeworkDetails *view = [[HomeworkDetails alloc] init]; int lastIndex = [indexPath indexAtPosition:[indexPath length] - 1]; NSLog(@"%u", lastIndex); [self performSegueWithIdentifier: @"HomeworkDetailsSegue" sender:self]; view.currentIndex = lastIndex; [tableView deselectRowAtIndexPath:indexPath animated:YES]; } ``` At this point, I can successfully move on to the next ViewController (HomeworkDetails) but the information is not passed through. I am trying to accomplish this by doing `view.currentIndex = lastIndex;` but this is not working. How else can I do this? Sorry if I missed anything; I am a beginner at iOS development. With suggestions: ``` - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { HomeworkDetails *view = [[HomeworkDetails alloc] init]; int lastIndex = [indexPath indexAtPosition:[indexPath length] - 1]; NSLog(@"%u", lastIndex); [self performSegueWithIdentifier: @"HomeworkDetailsSegue" sender:self]; view.currentIndex = lastIndex; [tableView deselectRowAtIndexPath:indexPath animated:YES]; } - (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender { if ([segue.identifier isEqualToString:@"HomeworkDetailsSegue"]) { // note that "sender" will be the tableView cell that was selected UITableViewCell *cell = (UITableViewCell*)sender; NSIndexPath *indexPath = [self.tableView indexPathForCell:cell]; //**error** HomeworkDetails *vc = (HomeworkDetails*)[segue destinationViewController]; vc.currentIndex = indexPath.row; } } ```

Original source