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POdelete one record from database using UITableView and Core Data
 

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    <p>I am writing a simple app which lets users add entries to a database. The data is displayed in a UITableView. What I can't figure out is how to delete just one record from the database using the swipe-to-delete functionality of a tableview. I know that the code goes in this method:</p> <pre><code>-(void)setEditing:(BOOL)editing animated:(BOOL)animated { [super setEditing:editing animated:animated]; } </code></pre> <p>But I don't know how to fetch the record of the database that populates the cell that has been swiped.</p> <p>I have a method which deletes all cells when the user clicks on a button on the navigation bar:</p> <pre><code>-(void)deleteAll { NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; NSEntityDescription *entity = [NSEntityDescription entityForName:@"Parameters" inManagedObjectContext:context]; [fetchRequest setEntity:entity]; NSError *error; NSArray *items = [context executeFetchRequest:fetchRequest error:&amp;error]; for (NSManagedObject *managedObject in items) { [context deleteObject:managedObject]; } if (![context save:&amp;error]) { } [self.tableView reloadData]; } </code></pre> <p>But I don't how to customize this code to delete one record at a time. Any help to get me started would be appreciated.</p> <p>I have this method as well...I would think this would delete the record permanently but it doesn't...</p> <pre><code>- (void)tableView:(UITableView *)tableView commitEditingStyle: (UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath { if (editingStyle == UITableViewCellEditingStyleDelete) { // Delete the row from the data source [self.arr removeObjectAtIndex:indexPath.row]; [self.tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade]; } else if (editingStyle == UITableViewCellEditingStyleInsert) { // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view } [self.tableView reloadData]; } </code></pre>
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