Question

I have a tableView where I can select a ship from a list, and when I tap it I want the information to pop up on another screen. The way I am currently doing this is:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath;
{

cargoShips* ship=[boatsForOwner objectAtIndex:indexPath.row];
UITableViewCell *cell = [self.boatsTableView cellForRowAtIndexPath:indexPath];

[self performSegueWithIdentifier:@"boatInfoSegue" sender:cell];




NSString *nameString = ship.name;
NSString *sizeString = ship.size;


NSUserDefaults *shipName = [NSUserDefaults standardUserDefaults];
[shipName setObject:nameString forKey:@"globalName"];
[shipName synchronize];
NSUserDefaults *shipSize = [NSUserDefaults standardUserDefaults];
[shipSize setObject:sizeString forKey:@"globalSize"];
[shipSize synchronize];
[tableView deselectRowAtIndexPath:indexPath animated:YES];
}

And to load it back into text (in another file)

 NSString *getName = [[NSUserDefaults standardUserDefaults]
                     objectForKey:@"globalName"];
NSString *getSize = [[NSUserDefaults standardUserDefaults]
                     objectForKey:@"globalSize"];

shipNameText.text = getName;
shipSizeText.text = getSize;

Now , this works great, except for the fact that it does not return the cell I selected to get to the infoView, but the previous selected object. So if I select the first object on the list, it returns null, the next item i select gets the result I should have had for the first object and so on.

What did I do wrong and how can I fix it?

Answer 1

NSUserDefaults is tool for saving settings, not for transferring object.
If I were you I made it this way:

#pragma mark - Segue
- (void)prepareForSegue:(UIStoryboardSegue *)segue
                 sender:(id)sender {
    if ([segue.identifier isEqualToString:@"boatInfoSegue"]) {

        NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
        CargoShip *ship = boatsForOwner[indexPath.row];

        BoatViewController *vc = (BoatViewController *)segue.destinationViewController;
        vc.ship = ship;      
    }
}

Class names should be capitalized, that’s why I wrote CargoShip