为什么条形按钮不会变回蓝色？ [英] Why doesn't bar button change back to blue?

问题描述

我的应用主页面中有一个+按钮。它是 UIBarButtonItem 。我在代码中没有做任何事情，只用segue将它连接到故事板中的另一个视图控制器。按钮以正常的蓝色开始。在我关闭被引用的视图控制器后，条形按钮项目由于某种原因显示为灰色。有谁知道为什么？就像我说的，我在代码中没有做任何事情（没有连接到条形按钮）。

I have a '+' button in my main page of my app. It is a UIBarButtonItem. I don't do anything with it in code, only connect it to another view controller in storyboard with segue. The button starts out with its normal blue color. After I dismiss the view controller that was segued to, the bar button item appears gray for some reason. Does anyone know why? Like I said, I do nothing with it in code(nothing connected to the bar button).

编辑：我的主视图控制器有'+'栏按钮，我猜到了一个人。那个popover然后转向另一个控制器。当 视图控制器解散时，我直接返回主屏幕而不实际解除第一个弹出窗口。所以，我认为它仍然是导航堆栈的一部分。这些信息有用吗？

My main view controller has the '+' bar button, and I segue to a popover. That popover then segues to another controller. When that view controller dismisses, I return straight back to the home screen without actually dismissing the first popover. So, I think it's still a part of the navigation stack. Is this information helpful?

推荐答案

特别感谢@matt帮我解决这个问题。

Special thanks to @matt for helping me with this issue.

这似乎是iOS中的一个错误，如此答案所示。

It seems like this is a bug in iOS, as shown in this answer.

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