调用 popToRootViewControllerAnimated:NO 时崩溃，将 animate 设置为 YES 工作时不会崩溃，奇怪。

发布于 2024-12-27 14:28:05 字数 569 浏览 1 评论 0原文

我的应用程序是基于UINavigationViewController，堆栈中有3个ViewController，分别命名为A、B、C，A是根视图控制器，现在在ViewController C中执行以下操作，应用程序将崩溃100％。

- (void) delayPopAction {
    [[self navigationController] popToRootViewControllerAnimated:NO];
}

- (void)searchTap:(id)sender{
    [self performSelector:@selector(delayPopAction) withObject:nil afterDelay:3.0];
}

通过僵尸追踪，发现C的崩溃费用已被销毁，但仍然有可用的事件发送给他。更奇怪的是，如果我把动画参数从NO改为YES，并没有发生崩溃，可能是因为C的生命周期被扩大了。

请参阅 API 文档。不是什么意思？我不太明白。
动画将此值设置为 YES 可以为过渡设置动画。如果您在显示视图之前设置导航控制器，请传递“否”。

任何想法或建议将不胜感激，提前致谢。

原文

My app is based on UINavigationViewController, there are 3 ViewController in the stack, named A, B, C, A is root view controller, now in ViewController C do the following operation, app will crash 100%.

- (void) delayPopAction {
    [[self navigationController] popToRootViewControllerAnimated:NO];
}

- (void)searchTap:(id)sender{
    [self performSelector:@selector(delayPopAction) withObject:nil afterDelay:3.0];
}

Trace by zombie and find the crash dues to C has been destroyed but there is still event available sent to him. More strange, if I change animated parameter from NO to YES, no crash happen, maybe dues to C's life circle has been enlarged.

See API doc. How does NO mean? I don't understand it clearly.
animated
Set this value to YES to animate the transition. Pass NO if you are setting up a navigation controller before its view is displayed.

Any idea or suggestion will be appreciated, thanks in advance.

分享到QQ

分享到微博