IOS / Objective-C：传递数据（数组）并接收详细的字符串

Question

I'm trying to pass data (array) with PrepareForSegue into a detailed VC. The destination VC has a label that receives a string. I thought I could transform the array into a string, and the rest was straightforward. This was achieved, though, but kind of wrongly, because, obviously, the text I get, regardless the row I click, returns me the whole object...And my goal is to get details of a specific row...Can someone help me? Guess this is basic stuff, but this is my first app...The method PrepareForSegue:

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

    if ([segue.identifier isEqualToString:@"detail"]) {

        NSString *places = [_spots componentsJoinedByString:@" "];

        DetailViewController * destination = segue.destinationViewController;
        destination.detailedText =  places;
}

EDIT:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Cell" forIndexPath:indexPath];

    NSManagedObject *ls = [self.spots objectAtIndex:indexPath.row];
    NSLog(@"Table Spots are: %@", ls);
    [cell.textLabel setText:[NSString stringWithFormat:@"%@", [ls valueForKey:@"name"]]];
    cell.imageView.image = [UIImage imageNamed:@"city.jpg"];
    return cell;
}

Answer 1

As far as I understood, you want to performSegue() on a row selection and you want to pass a data specific to the selected row. In order to do this you can use the tableView.indexPathForSelectedRows() method, which is going to return an array with the indexPaths of all selected rows. Then you can get the UITableViewCells for this indexPaths and get their data.

Answer 2

You can pass the string value to the perforSegue method as the sender:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    [self performSegueWithIdentifier:@"detail" sender:[_spots objectAtIndex:indexPath.row]];
}

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if ([segue.identifier isEqualToString:@"detail"]) {
        DetailViewController * destination = segue.destinationViewController;
        destination.detailedText = sender;
    }
}