添加到UISearchDisplayController时，UISearchBar在状态栏下剪切 [英] UISearchBar clipped under status bar when added to UISearchDisplayController

问题描述

我希望我的搜索栏将其背景向上扩展到状态栏下方，如下所示：

I want my search bar to draw its background extended upwards below the status bar like this:

这是上图中的相应代码：

This is the corresponding code for the image above:

- (void)viewDidLoad
{
    [super viewDidLoad];

    self.searchBar = [[UISearchBar alloc] init];
    self.searchBar.delegate = self;
    [self.view addSubview:self.searchBar];

    self.searchBar.translatesAutoresizingMaskIntoConstraints = NO;
    NSDictionary *views = @{@"v":self.searchBar,
                            @"topLayoutGuide":self.topLayoutGuide};

    [self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:[topLayoutGuide][v]" options:0 metrics:nil views:views]];
    [self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|[v]|" options:0 metrics:nil views:views]];

    [self.searchBar setBackgroundImage:[UIImage imageNamed:@"searchbarBG"] forBarPosition:UIBarPositionTopAttached barMetrics:UIBarMetricsDefault];
}

- (UIBarPosition)positionForBar:(id <UIBarPositioning>)bar
{
    return UIBarPositionTopAttached;
}

当我将搜索栏添加到<$时出现问题c $ c> UISearchDisplayController 通过在 viewDidLoad 方法的末尾附加以下行：

The problem arises when I add the search bar to a UISearchDisplayController by appending the following line at the end of the viewDidLoad method:

self.mySearchDisplayController = [[UISearchDisplayController alloc] initWithSearchBar:self.searchBar contentsController:self];

这是我得到的结果：

请注意图像看起来很紧张。这与我在代码中将UIBarPositionTopAttached更改为UIBarPositionTop的情况不同：

Note that the image looks clipped. This is different from what it looks like if I change UIBarPositionTopAttached to UIBarPositionTop in the code:

被剪裁的图像让我想到 clipsToBounds 我可以通过在 viewDidLoad 的末尾添加这段代码来正确显示搜索栏：

The image being clipped made me think of clipsToBounds and I could get the search bar to display properly by adding this piece of code at the end of viewDidLoad:

for (UIView *subview in self.searchBar.subviews) {
    subview.clipsToBounds = NO;
}

所以我想 UISearchDisplayController 正在搞乱 UISearchBar 背景视图的 clipsToBounds 属性。还有其他人在努力吗？我的代码有问题吗？

So I guess the UISearchDisplayController is messing with the clipsToBounds property of the UISearchBar background view. Has anyone else struggled with this? Is there a problem with my code?

2013年10月，除了发布此问题外，我还使用Apple Bug Reporter工具报告了这一点。 2015年1月6日（waaaay为时已晚）我收到了Apple Developer Relations的回复：

Back in October 2013, besides posting this question, I also reported this using the Apple Bug Reporter tool. On January 6, 2015 (waaaay too late) I got a reply from Apple Developer Relations:

没有计划根据这个来解决这个问题以下内容：

There are no plans to address this based on the following:

不再支持UISearchDisplayController。 UISearchController应该提供所需的
功能，如果不是
（或行为不正确），请提交新的bug。

UISearchDisplayController is no longer supported. The desired functionality should be available with UISearchController and if not (or is behaving incorrectly), please file a new bug.

我们现在关闭此报告。

如果您对解决方案有疑问，或者这对您来说仍然是一个
关键问题，请用此更新您的错误报告
信息。

If you have questions about the resolution, or if this is still a critical issue for you, then please update your bug report with that information.

请确保定期检查新的Apple版本是否有任何可能影响此问题的更新
。

Please be sure to regularly check new Apple releases for any updates that might affect this issue.

推荐答案

我遇到了完全相同的问题，但强迫searchBar的clipsToBounds为YES。无需自动布局或UIBarPositioning协议方法。

I was having the exact same issue, but forcing clipsToBounds to YES for the searchBar, did the trick. No need of auto-layout nor UIBarPositioning protocol methods.

这篇关于添加到UISearchDisplayController时，UISearchBar在状态栏下剪切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！