没有即时搜索的 UISearchDisplayController：如何控制 TableView 的变暗？

发布于 2024-10-07 03:51:48 字数 808 浏览 4 评论 0原文

我已经使用 Apple 的 TableSearch 示例参考实现了 UISearchDisplayController 。我的列表包含超过 10,000 个元素，这使得过滤速度太慢，无法对用户输入的每个字符执行过滤。我已设法将搜索限制为当用户使用以下代码单击搜索按钮时。

- (void)searchBarSearchButtonClicked:(UISearchBar*)searchBar
{
    [self filterContentForSearchText:[self.searchDisplayController.searchBar text]
        scope:[self.searchDisplayController.searchBar selectedScopeButtonIndex]];
    [self.searchDisplayController.searchResultsTableView reloadData];
}

- (BOOL)searchDisplayController:(UISearchDisplayController*)controller
    shouldReloadTableForSearchString:(NSString*)searchString
{
    return NO;
}

现在，我的问题是，一旦用户输入第一个字符，表格视图的变暗就会消失，我想保持它变暗，直到用户单击“搜索”按钮。（或取消搜索。）

原文

I have implemented a UISearchDisplayController using Apple's TableSearch sample reference. My list contains just over 10.000 elements, and this makes the filtering too slow to execute it on every character that the user enters. I've managed to restrict to search to when the user click on the search button with the following code.

- (void)searchBarSearchButtonClicked:(UISearchBar*)searchBar
{
    [self filterContentForSearchText:[self.searchDisplayController.searchBar text]
        scope:[self.searchDisplayController.searchBar selectedScopeButtonIndex]];
    [self.searchDisplayController.searchResultsTableView reloadData];
}

- (BOOL)searchDisplayController:(UISearchDisplayController*)controller
    shouldReloadTableForSearchString:(NSString*)searchString
{
    return NO;
}

Now, my problem is, that as soon as the user enters the first character the dimming of the table view disappears, and I would like to keep it dimmed until the user clicks the Search buton. (Or cancels the search.)

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橘味果▽酱 2024-10-14 03:51:48

searchDisplayController 是一个黑盒子，因此您无法控制它何时显示 searchResultsTableView（在搜索栏中按下第一个按键时显示）。

您可以在 resultsTableView 上显示半透明视图，以提供由 searchDisplayController 提供的初始变暗的外观，但 searchResultsTableView 仍然可见。

- (BOOL)searchDisplayController:(UISearchDisplayController*)controller
    shouldReloadTableForSearchString:(NSString*)searchString
{
    // display a translucent view over the searchResultsTableView and
    // make sure it's only created on first key press
    return NO;
}

另一种选择是编写您自己的代码。

The searchDisplayController is a black box so you don't have any control over when it displays the searchResultsTableView (which in on first key press in the searchBar).

You could display a translucent view over the resultsTableView to give the appearance of the initial dimming provided by the searchDisplayController but the searchResultsTableView will still be visible.

- (BOOL)searchDisplayController:(UISearchDisplayController*)controller
    shouldReloadTableForSearchString:(NSString*)searchString
{
    // display a translucent view over the searchResultsTableView and
    // make sure it's only created on first key press
    return NO;
}

The other option is to code your own.

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