iOS 6 Programming Cookbook

4.8. Enabling Swipe Deletion of Table View Cells

Problem

You want your application users to be able to delete rows from a table view easily.

Solution

Implement the tableView:editingStyleForRowAtIndexPath: selector in the delegate and the tableView:commitEditingStyle:forRowAtIndexPath: selector in the data source of your table view:

Figure 4-5. Table view cells with indentation

- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView
           editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath{

  UITableViewCellEditingStyle result = UITableViewCellEditingStyleNone;

  if ([tableView isEqual:self.myTableView]){
    result = UITableViewCellEditingStyleDelete;
  }

  return result;

}

- (void) setEditing:(BOOL)editing
           animated:(BOOL)animated{

  [super setEditing:editing
           animated:animated];

  [self.myTableView setEditing:editing
                      animated:animated];


}

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

  if (editingStyle == UITableViewCellEditingStyleDelete){

    if (indexPath.row < [self.arrayOfRows count]){

      /* First remove this object from the source */
      [self.arrayOfRows removeObjectAtIndex:indexPath.row];

      /* Then remove the associated cell from the Table View */
      [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath]
                       withRowAnimation:UITableViewRowAnimationLeft];

    }
  }

}

The tableView:editingStyleForRowAtIndexPath: ...