UISearchController searchBar框架仅在第一次单击时调整大小 [英] UISearchController searchBar frame only resizes on first click

问题描述

我刚刚在常规的UIViewController中实现了一个UISearchController，我有一个奇怪的问题。

I have just implemented a UISearchController in a regular UIViewController, and I have a kind of weird issue.

我有一个完全符合我的尺寸的UIView想要我的UISearchBar。在第一次启动视图时，我将UISearchBar作为SubView添加到此UIView中。
但是当我启动它时，UISearchBar不会占用其父UIView的大小 - 它只占用整个屏幕的宽度。

I have a UIView that is adapted exactly to the size I want my UISearchBar to take. On first launch of the view, I add my UISearchBar as a SubView to this UIView. But when I launch it, the UISearchBar doesn't take the size of its parent UIView -- it just takes the width of the whole screen.

如您所见，它与右边的按钮。

As you can see, it overlaps with the button on the right.

但是一旦我点击搜索栏并取消它，它会调整到我想要的确切尺寸。

But once I click on the search bar and cancel it, it resizes to the exact size I want.

这可能是什么问题？我已经尝试将SearchBar中的AutoLayout约束添加到其父视图中，但它似乎没有改变任何东西。是不是[UIView addSubview：]处理这个？

What could be the issue here? I've tried adding AutoLayout Constraints from the SearchBar to its parent view but it doesn't seem to change anything. Doesn't [UIView addSubview:] handle this?

推荐答案

UISearchController的视图行为确实很奇怪，但有一个简单的解决方法。

UISearchController's view behaviour is weird indeed, but there is a simple workaround.

• 使用额外的容器视图


• 将UISearchController的视图放入


• 将UISearchController的视图自动调整遮罩设置为UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight


• 将UISearchController的框架设置为容器的视图边界

• Use an additional container view
• put UISearchController's view inside
• set UISearchController's view autoresizing mask to UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight
• set UISearchController's frame to container's view bounds

此时UISearchController.view赢了' t调整大小超出container.bounds。

At this point UISearchController.view won't resize beyond container.bounds.

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