如何覆盖“无结果”文本在UISearchDisplayController的searchResultTableView？ [英] How do I cover the "no results" text in UISearchDisplayController's searchResultTableView?

问题描述

我不想在服务器处理搜索查询时显示无结果文本。

I don't want to show the "no results" text while my server is processing a search query.

我想出了包含标签的表格单元格的精确坐标，尝试覆盖它。

I figured out the exact coordinates of the table cell that contains the label and attempted to cover it.

self.noResultsCoverView = [[[UIView alloc] initWithFrame:CGRectMake(
    0.0, 
    44.0, 
    320.0, 
    43.0
)] autorelease];
self.noResultsCoverView.backgroundColor = [UIColor whiteColor];
[self.searchDisplayController.searchResultsTableView addSubview:self.noResultsCoverView];

对于我的懊恼，我的封面在表视图上方，但低于标签。我需要盖子在标签之上。 searchResultsTableView :: bringSubviewToFront 没有工作，这让我相信标签不是 searchResultsTableView

To my chagrin, my cover was above the table view, but below the label. I need the cover to be above the label. searchResultsTableView::bringSubviewToFront didn't work, which makes me believe that the label isn't a child of the searchResultsTableView at all.

BTW，此 Stack Overflow answer doesn'对我来说相当的工作。它工作在第一次搜索，但在随后的搜索闪烁一个奇怪的黑色封面。

BTW, this Stack Overflow answer doesn't quite work for me. It works on the very first search, but flashes a weird black cover on subsequent searches.

推荐答案

解决这个问题最简单的方法是在查询正在进行时返回numberOfRowsInSection中的1，或将其隐藏属性设置为YES，因此不可见。

The easiest way to work around this is to return 1 in numberOfRowsInSection while the query is in progress and leave the dummy cell empty or set its hidden property to YES so it is not visible.

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