viewDidDisappear 没有在 UINavigationController 上被调用

问题描述

我的导航控制器有问题.如果我将视图控制器添加到堆栈中:

I'm having a problem with my navigation controller. If I add a view controller to the stack:

- (void) tui_ToggleListStudy:(id)sender
{
    listVC = [[ListViewController alloc] init];
    [self.navigationController pushViewController:listVC animated:NO];
    [listVC release];
}

我有 viewWillDisappear: 和 viewDidDisappear 下面的视图控制器的 NSLog 消息 - 但只有 viewWillDisappear: 被调用.

I have NSLog messages for the view controller beneath, for both viewWillDisappear: and viewDidDisappear - but only viewWillDisappear: is getting called.

不仅如此，视图控制器也没有收到任何其他委托消息:没有 viewDidUnload 或 dealloc...

Not only that, but the view controller doesn't receive any other delegate messages either: No viewDidUnload, or dealloc...

对此我有什么办法吗?

我被难住了！有什么想法吗?

I'm stumped! Any thoughts?

谢谢！

推荐答案

如果您在代码中输入了与问题中相同的错字，我知道答案:方法签名是 viewDidDisappear:(使用 animated 参数)，而不是 viewDidDisappear.

I know the answer if you made the same typo in your code that you made in your question: the method signature is viewDidDisappear: (with the animated argument), not viewDidDisappear.

不仅如此，视图控制器也没有收到任何其他委托消息:No viewDidUnload 或 dealloc...

Not only that, but the view controller doesn't receive any other delegate messages either: No viewDidUnload, or dealloc...

当您将另一个控制器压入堆栈时，视图控制器不会被释放.除非内存不足，否则不会调用 viewDidUnload.

A view controller will not be deallocated when you push another controller onto the stack. And viewDidUnload won't be called unless you run out of memory.

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