在搜索如何使UITableViewCellAccessoryCheckmark成为正确的单元格时？

Question

我有一个带有2个数组的视图控制器，一个用于正常结果;另一个是基于文本输入的过滤/搜索结果。

一次只能有一个单元格拥有UITableViewCellAccessoryCheckmark。

我的问题可以这样描述;

IE：

1. 视图控制器被送入Venue对象;并标有 UITableViewCellAccessoryCheckmark。这是预期的，也是正确的。
2. 搜索查询中的用户类型，使用搜索结果数组; 但是UITableViewCellAccessoryCheckmark不再出现在 之前在步骤1中检查过的地点。

我不确定为什么不检查细胞。

视觉示例;

原始视图。 Cobo Arena是预先选定的地点



-

打字时;选中标记不在正确的位置



-

更多输入：复选标记现已消失



-

代码在

之下

- (void) configureCell:(UITableViewCell *)cell atIndexPath:(NSIndexPath *)indexPath
{
    FCVenue *venue;

    if (self.isSearching)
    {
        venue = [self.searchResults objectAtIndex:indexPath.row];
    }
    else
    {
        venue = [self.venues objectAtIndex:indexPath.row];
    }

    if ([indexPath isEqual:self.selectedIndexPath])
    {
        cell.accessoryType = UITableViewCellAccessoryCheckmark;
    }
    else
    {
        cell.accessoryType = UITableViewCellAccessoryNone;
    }

    cell.textLabel.text = [NSString stringWithFormat:@"%@", venue.name];
    cell.detailTextLabel.text = [NSString stringWithFormat:@"%@", venue.location];
}

-(NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    [self.tableView cellForRowAtIndexPath:self.selectedIndexPath].accessoryType = UITableViewCellAccessoryNone;
    self.selectedIndexPath = indexPath;
    [self.tableView reloadRowsAtIndexPaths:@[self.selectedIndexPath] withRowAnimation:UITableViewRowAnimationAutomatic];

    return indexPath;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    [tableView deselectRowAtIndexPath:indexPath animated:YES];

    FCVenue *venue;

    if (self.searching)
    {
        venue = [self.searchResults objectAtIndex:indexPath.row];
    }
    else
    {
        venue = [self.venues objectAtIndex:indexPath.row];
    }

    self.selectedVenue = venue;

// This method fires a completion block and dismisses the view controller
    if (self.completionBlock)
    {
        self.completionBlock( self, self.selectedVenue );
    }

    [self.navigationController dismissViewControllerAnimated:YES completion:^{
    }];
}

Answer 1

这种情况正在发生，因为您正在存储完整表的索引以显示复选标记。相反，您应该比较FCVenue对象以查看是否是已检查的对象。

所以代码应该是这样的，但它没有经过测试：

- (void) configureCell:(UITableViewCell *)cell atIndexPath:(NSIndexPath *)indexPath
{
    FCVenue *venue;

    if (self.isSearching)
    {
        venue = [self.searchResults objectAtIndex:indexPath.row];
    }
    else
    {
        venue = [self.venues objectAtIndex:indexPath.row];
    }

    if ([venue isEqual:self.selectedVenue]) // You may want to compare just the id or any other unique property
    {
        cell.accessoryType = UITableViewCellAccessoryCheckmark;
        // if you opt for keeping the selectedIndexPath property you need to refresh it here.
    }
    else
    {
        cell.accessoryType = UITableViewCellAccessoryNone;
    }

    cell.textLabel.text = [NSString stringWithFormat:@"%@", venue.name];
    cell.detailTextLabel.text = [NSString stringWithFormat:@"%@", venue.location];
}

-(NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
   //[self.tableView cellForRowAtIndexPath:self.selectedIndexPath].accessoryType = UITableViewCellAccessoryNone;
    // Here you may want to do a loop over all the possible index path to clean the state or keep storing the selected indexPath just to clear the mark when the selected venue changes.
    FCVenue *venue;

    if (self.searching)
    {
        venue = [self.searchResults objectAtIndex:indexPath.row];
    }
    else
    {
        venue = [self.venues objectAtIndex:indexPath.row];
    }

    self.selectedVenue = venue;
[self.tableView reloadRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];

    return indexPath;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    [tableView deselectRowAtIndexPath:indexPath animated:YES];



// This method fires a completion block and dismisses the view controller
    if (self.completionBlock)
    {
        self.completionBlock( self, self.selectedVenue );
    }

    [self.navigationController dismissViewControllerAnimated:YES completion:^{
    }];
}

在任何情况下，一般的想法是你需要将场地与支票联系起来，而不是在indexPath上，因为indexPath会随着搜索而改变。