想要在UITableView中从右向左滑动显示删除按钮

Question

- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
    return YES;
}

- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath{
    return UITableViewCellEditingStyleDelete;
}


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

    if(editingStyle == UITableViewCellEditingStyleDelete){
        //[theSimpsons removeObjectAtIndex:indexPath.row];

        NSString *time = [[arrayList objectAtIndex:indexPath.row] objectForKey:@"TIME"];
        NSString *date= [[arrayList objectAtIndex:indexPath.row] objectForKey:@"DATE"];
        DBManager *dbm = [[DBManager alloc] init];
        [dbm initiallzeDatabase];
        [dbm deleteItemAtIndexPath:time :date];

        //arrayList = [dbm getParkResults];
        //[parkTableView reloadData];

        [arrayList removeObjectAtIndex:indexPath.row];

        [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
    }
}

我在我的应用程序中使用了上面的代码.编辑部分工作正常,但事实是,删除按钮仅在我们从单元格从左向右滑动时出现.现在我有一个菜单,可以像Facebook一样从左到右滑动.那么当用户从右向左滑动时,如何确保显示删除按钮.

Answer 1

请不要将代表设置为 UISwipeGestureRecognizer

写下这个viewDidLoad或你发起你的地方UITableView

 UISwipeGestureRecognizer *swipeRight = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(callYourMethod:)];
 swipeRight.direction = UISwipeGestureRecognizerDirectionRight;
 [self.tblView addGestureRecognizer:swipeRight];

无需在下面的方法中写任何东西.

- (void)callYourMethod:(UISwipeGestureRecognizer *)recognizer
{

}

Answer 2

这可能有效。将此代码放入awakeFromNib或init：

UISwipeGestureRecognizer *swipeDelete = [[UISwipeGestureRecognizer alloc]     initWithTarget:self action:@selector(handleSwipeDelete:)];
[swipeDelete setDirection: UISwipeGestureRecognizerDirectionLeft];
[yourTableView addGestureRecognizer:swipeDelete];

然后handleSwipeDelete组织您的单元格并显示删除按钮。您可能需要处理单元格状态并在向左滑动/向右滑动时更改它。