iOS方式开始向下滚动时，Checkmark消失 [英] iOS Way the Checkmark disappears when begin scroll down

问题描述

勾选标记在开始向下滚动时消失。

Way the Checkmark disappears when begin scroll down.

下面是 didSelectRowAtIndexPath 方法的代码：

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    UITableViewCell *selectedCell = [tableView cellForRowAtIndexPath:indexPath];

    if (selectedCell.accessoryType == UITableViewCellAccessoryCheckmark) {
        selectedCell.accessoryType = UITableViewCellAccessoryNone;

        if ([[[collectionDataArray objectAtIndex:indexPath.section] objectAtIndex:indexPath.row] objectForKey:@"creditHours"]==@"1") {
            totalHoure = totalHoure - 1;
        }

    } else {

        selectedCell.accessoryType = UITableViewCellAccessoryCheckmark;

        if ([[[collectionDataArray objectAtIndex:indexPath.section] objectAtIndex:indexPath.row] objectForKey:@"creditHours"]==@"1") {
            totalHoure = totalHoure + 1 ;
        }
    }
}

有什么问题吗？或者是否有任何其他技术。

Is there any problem ? or if there any other technique.

推荐答案

尝试这个来存储复选标记单元格数据。并希望这可以解决您的问题：

Try this one to store checkmark cell data.And hope this solves your problem:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
       UITableViewCell *selectedCell = [tableView cellForRowAtIndexPath:indexPath];

       if ([selectedCell accessoryType] == UITableViewCellAccessoryNone || [selectedCell accessoryType]== UITableViewCellAccessoryDisclosureIndicator)   
       {
           [selectedCell setAccessoryType:UITableViewCellAccessoryCheckmark];
                    [Mybuffer addObject:[arrItem objectAtIndex:indexPath.row]];
       }
       else
       {
           [selectedCell setAccessoryType:UITableViewCellAccessoryNone];
           [Mybuffer removeObject:[NSNumber numberWithInt:indexPath.row]];
       }
}

这篇关于iOS方式开始向下滚动时，Checkmark消失的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！