Storing coredata array through prepareForSegue in objective C

Question

I need to pass an array of CoreData entities from my main view to a TableViewController.

I used a lot of stackoverflow posts to help myself with that, and thought it worked.

But when I build my app, I have a thread problem, displaying:

[NSTaggedPointerString count]: unrecognized selector sent to instance".

I did some checks and the problem is, in my tableView, the number of Row is set to 0.

So here is my code :

My prepareForSegue function in my MainViewController.m:

(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if ([segue.identifier isEqualToString:@"sgPushDetail"])
    {
        checkDataSavedTableViewController *detail = segue.destinationViewController;
        detail.datasToDisplay = _listOfDatas;
    }
}

• listOfDatas is an NSArray of NSManagedObject, declared in my MainViewController.h

• datasToDisplay is an NSArray declared in my TableViewController.

Here is my function to put my datas in the TableViewController:

(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"dataCells" forIndexPath:indexPath];
    NSString *rowArray = self.datasToDisplay[indexPath.row];
    cell.textLabel.text = rowArray;
    return cell;
}

(But the error appears in the ViewDidLoad so meeeh)

How can I proceed further?

Answer 1

OK I AM STUPID.

Since I use CoreData, I already have a list of my entities. I don't need my NSArray of randomMeh, I just need that:

NSEntityDescription *entityDesc = [NSEntityDescription entityForName:@"Contact" inManagedObjectContext:context];