UITableView Delete

2012-10-16_08-54-53-AM_UITableView_Delete_Button_handling.m

// From: http://useyourloaf.com/blog/2010/10/04/swiping-to-delete-rows-from-a-table.html

/**
 * Perform anything that needs to be done before the Delete button is shown
 */ 
- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView 
       editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath {

  /* Do Stuff */

  // Example: Disable the Delete button if this is the last row in the table.
  NSUInteger row = [indexPath row];
  NSUInteger count = [posts count];
  if (row < count) {

    return UITableViewCellEditingStyleDelete;

  } else {

    return UITableViewCellEditingStyleNone;
  }
}

/**
 * Perform the delete operation on the table view
 */
- (void)tableView:(UITableView *)tableView 
        commitEditingStyle:(UITableViewCellEditingStyle)editingStyle
        forRowAtIndexPath:(NSIndexPath *)indexPath {

  /* Do your delete work here */

  // Example: Delete the post
  NSUInteger row = [indexPath row];
  NSUInteger count = [posts count];

  if (row < count) {
    [posts removeObjectAtIndex:row];
  }
}

/**
 * Update the tableview after the change
 */
- (void)tableView:(UITableView *)tableView 
                   didEndEditingRowAtIndexPath:(NSIndexPath *)indexPath {

  /* Update the table view and any associated views */

  // Example: Update the Title bar based on the number of posts
  [self updateViewTitle];
  [tableView reloadData];
}