UITableViewCell:允许选择性删除

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

    //if we cant delete the object represented at the index path
    if ([[tableViewObjectsArray objectAtIndex:indexPath.row] canBeDeleted] == NO){
        return UITableViewCellEditingStyleNone;
    }
    //otherwise allow the deletion
    else{
        return UITableViewCellEditingStyleDelete;
    }
}

当然,这会在“-”按钮应该在的地方留下一个空白,但它不允许删除。而且也不允许刷卡删除。

实施:

// Override to support conditional editing of the table view.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
    // Return NO if you do not want the specified item to be editable.
    return YES;
}