Unable to delete row/coredata

Question

In my app I have a Table view with values from a mapkit. I can edit the table, delete the row, but when the app starts over, the same deleted rows are still there....How can I fix this? The code for the editing:

- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
 if (editingStyle == UITableViewCellEditingStyleDelete) {

     [_locations removeObjectAtIndex:[indexPath row]];

     [tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade];

     [tableView reloadData];
 }

Any tips? Thank you

Answer 1

1. Load the data from core data using a NSFetchedResultsController .
2. Implement the delegate function to update your views when change occur.
3. When you delete something delete enqueue a block to delete it from core data. (if you are using NSPersistentContainer use performBackgroundTask: ).
4. Don't update your views. This will happen automatically because of the delegate callback that you implemented in step 2.