返回时弹出ViewController不会调用viewWillAppear

问题描述

每当我手动弹出一个视图控制器时， viewWillAppear 都不会在现在出现的前一个 UIViewController 上被调用。

Whenever I pop a view controller manually, viewWillAppear doesn't get called on the previous UIViewController that now appears.

这是2个常规 UIViewControllers 。我的应用程序设置如下：

These are 2 regular UIViewControllers. My application setup is like this:

- UINavigationController
   - UITabViewController with 5 UIViewControllers including UIViewControllerA
      -UIViewControllerA (When I get back here, viewWillAppear doesnt get called)
        -UIViewControllerB (I'm here, I want to pop to A)

我尝试手动调用 viewWillAppear ，但这也无济于事。可能有什么不对？我的最后一招将弹出B和A，然后创建一个新的A，并推动它，但这只是最后的手段（我认为这会有用吗？）

I've tried calling viewWillAppear manually, but that doesn't help either. What could be wrong? My last resort will be popping B, and A, and then creating a new A, and pushing that, but that's only as a last resort(I assume this will work?)

推荐答案

它不会被调用，因为视图在导航控制器内，但我在这里找到了一个解决方案：

It will not get called because the view is inside the navigation controller, but I found a solution here:

希望有所帮助。

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