添加到 UINavigationController 时 UIViewController 未释放

发布于 2024-12-20 19:01:05 字数 618 浏览 1 评论 0原文

下面是一些减少的代码来演示我遇到的问题。

我分配并初始化一个视图控制器。 init 方法是标准的 Objective C init，因此视图控制器还没有执行任何操作。然后我创建一个 navigationController，使用新创建的视图控制器初始化根。然后我释放视图控制器，因为导航现在已经有了它，但我不需要它。在下一行中， nav 被释放，我希望视图控制器的 dealloc/viewDidUnload 将被调用。相反，他们不是。如果我没有将 sportsViewController 放在导航控制器上，则在 sportsViewController 释放后会调用 dealloc 。我做错了什么？（顺便说一句，我还有其他类似的代码可以正常工作）

SportsViewController *sportsViewController = [[SportsViewController alloc]  init];
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:sportsViewController];
[sportsViewController release];
[nav release];

原文

Below is reduced bit of code to demonstrate a problem I am a having.

I allocate and init a view controller. The init method is the standard Objective C init, so the view controller isn't doing anything yet. Then I create a navigationController initializing the root with the newly created view controller.
I then release the view controller since the nav has it now and I don't need it.
In the next line nav is released and I would expect that the view controller's dealloc/viewDidUnload would be called.
Instead they are not.
If I don't put the sportsViewController on the nav controller, dealloc is called after sportsViewController is released.
What am I doing wrong?
(BTW I have other similar pieces of code that work correctly)

SportsViewController *sportsViewController = [[SportsViewController alloc]  init];
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:sportsViewController];
[sportsViewController release];
[nav release];

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