调用presentModalViewController后卸载View？

发布于 2024-11-01 15:05:23 字数 419 浏览 3 评论 0原文

我有一些视图控制器，我使用以下方法调用它：

myViewController *myView = [[myViewController alloc] initWithNibName:nil bundle:nil];
    myView.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
    [self presentModalViewController:myView animated:YES];
    [myView release];

如果我使用该应用程序几次，我会收到内存警告，并且应用程序会冻结几秒钟！我认为原因是我切换了视图但没有释放旧的视图!!?!!!?!! （我将插座设置为零并释放它们）

切换到新视图后如何卸载旧视图？

提前致谢

原文

I have some view controller which I call with the following method:

myViewController *myView = [[myViewController alloc] initWithNibName:nil bundle:nil];
    myView.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
    [self presentModalViewController:myView animated:YES];
    [myView release];

if I use the app a few times I get a memory warning and the app freezes for a few seconds! I think the reason is that i switch the view but not discharged the old one !!?!!?!!
(i set my outlets to nil and release them)

how can I unload the old view after switching to the new one?

Thanks in advance

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弃爱 2024-11-08 15:05:23

切换视图时，请务必在 myViewController 上调用dismissModalViewController:(BOOL)animated。

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长伴 2024-11-08 15:05:23

在启动 modalViewController 的类中，您可以为保留的模态视图控制器创建一个属性。然后你可以写这样的东西。

//This would be in an action or something...
if (self.myViewControllerProperty == nil) {
    self.myViewControllerProperty = [[[MyViewController alloc] initWithNibName:nil bundle:nil] autorelease];
}

[self presentModalViewController:self.myViewControllerProperty animated:YES];

然后而不是设置

myView.modalTransitionStyle =
UIModalTransitionStyleCoverVertical;

将该代码移至 modalViewController 并写入 self.modalTransitionStyle = UIModalTransitionStyleCoverVertical; 我认为这看起来更干净，保持每个视图控制器的配置分开，不要混淆。

正如maclema所说，调用dissmissModalViewController，但你可能正在这样做......

In the class that launch the modalViewController you could make a property for the modal viewcontroller which you retain. Then you could write something like this.

//This would be in an action or something...
if (self.myViewControllerProperty == nil) {
    self.myViewControllerProperty = [[[MyViewController alloc] initWithNibName:nil bundle:nil] autorelease];
}

[self presentModalViewController:self.myViewControllerProperty animated:YES];

Then instead of setting the

myView.modalTransitionStyle =
UIModalTransitionStyleCoverVertical;

Move that code to the modalViewController and write self.modalTransitionStyle = UIModalTransitionStyleCoverVertical; I think that looks cleaner, keep the configuration of each viewcontroller separted don't mix it up.

And as the maclema said, call dissmissModalViewController, but you probably are doing that...

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浪漫之都 2024-11-08 15:05:23

可能会出现很多问题，但您不需要（也不能）卸载旧视图。确保在所有视图控制器的 viewDidUnload 中释放对象并将出口设置为 nil。当发生内存警告时，viewDidUnload 将被调用，因此如果您没有正确处理它，就会出现泄漏并可能崩溃。除此之外，很难知道您的应用程序还做了什么导致崩溃的事情。

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