删除Core Data表视图中的行

Question

我正在尝试删除核心数据的行。我实际上有一个表格视图，但是当我点击一行上的删除按钮时，它仍然变暗，没有其他事情发生。

以下是我用来删除行的代码：

- (void) controller:(NSFetchedResultsController *)controller didChangeObject:(id)anObject atIndexPath:(NSIndexPath *)indexPath forChangeType:(NSFetchedResultsChangeType)type newIndexPath:(NSIndexPath *)newIndexPath
{
    [[self tableView] deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
}

有什么想法吗？

Answer 1

你可以删除这样的行......

- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (editingStyle == UITableViewCellEditingStyleDelete)
    {
        // Delete the row from the data source
        [self.managedObjectContext deleteObject:[self.fetchedResultsController objectAtIndexPath:indexPath]];
    }
}

- (void)controller:(NSFetchedResultsController *)controller didChangeObject:(id)anObject 
       atIndexPath:(NSIndexPath *)indexPath forChangeType:(NSFetchedResultsChangeType)type 
      newIndexPath:(NSIndexPath *)newIndexPath
{
    if (type == NSFetchedResultsChangeDelete) {
        // Delete row from tableView.
        [self.tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath]
                              withRowAnimation:UITableViewRowAnimationFade];
    }
}