iPhone内存管理和CATransition

发布于 2024-09-12 04:29:37 字数 1745 浏览 5 评论 0原文

在管理添加和删除 uiviewcontroller 的总内存方面存在一些基本问题 - 但仅当我使用 CAtransition 添加动画时。我在下面的情况下设置了一个简单的场景：

我有一个基本的视图控制器，我将其初始化/分配，称为 IVC，并将其添加到当前的 uiController：在头文件中，它只是简单地声明：

IntroViewController* IVC;

AT START :3mb 总内存显示在泄漏

3.6mb 总内存

IVC=[[IntroViewController alloc] initWithNibName:@"Intro" bundle:[NSBundle mainBundle]];
[IVC.view setUserInteractionEnabled:YES];   
[self.view addSubview:IVC.view];

中，然后我释放：

[[IVC.view layer] removeAllAnimations];
[IVC.view removeFromSuperview];//remove intro animation
[IVC release];

正如预期的那样，总内存回到 3mb

但当我删除释放代码并添加以下内容时，这样就有是淡入然后释放此处显示的对象：

CATransition *applicationIntroLoadViewIn = [CATransition animation];
[applicationIntroLoadViewIn setDuration:.5];
[applicationIntroLoadViewIn setType:kCATransitionReveal];
[applicationIntroLoadViewIn setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn]];
[applicationIntroLoadViewIn setValue:@"IntroFadeIn" forKey:@"IntroAnimation"];
[applicationIntroLoadViewIn setDelegate:self];
[[IVC.view layer] addAnimation:applicationIntroLoadViewIn forKey:nil];

然后：

我创建一个方法来处理动画完成时的情况：

- (void)animationDidStop:(CAAnimation *)animation finished:(BOOL)flag{
NSString* value = [animation valueForKey:@"IntroAnimation"];

if ([value isEqualToString:@"IntroFadeIn"]){
    //this def gets called NSLog shows up
    [[IVC.view layer] removeAllAnimations];
    [IVC.view removeFromSuperview];//remove intro animation
    [IVC release];
    IVC=nil;
}

没有报告泄漏，视图被删除，但泄漏中内存仍然保留 3.6MB？有什么原因会发生这种情况吗？我不分配动画*，所以我觉得不需要清理，但这表明有些东西仍然保留在我的 IVC 视图中，

非常感谢任何帮助。

原文

Having some basic issues with managing the total memory from adding and removeing a uiviewcontroller - but only when i add an animation to it using CAtransition. I set up a simple scenario below of the situation:

I have a basic view controller that I init/alloc called IVC, and I add to the current uiController:
IN the header file it is simply just declared:

IntroViewController* IVC;

AT START :3mb total memory shown in leaks

3.6mb total memory

IVC=[[IntroViewController alloc] initWithNibName:@"Intro" bundle:[NSBundle mainBundle]];
[IVC.view setUserInteractionEnabled:YES];   
[self.view addSubview:IVC.view];

then i release:

[[IVC.view layer] removeAllAnimations];
[IVC.view removeFromSuperview];//remove intro animation
[IVC release];

as expected here total memory goes back to 3mb

but when i remove the release code and add the following so that there is a fade in and then release the object shown here:

CATransition *applicationIntroLoadViewIn = [CATransition animation];
[applicationIntroLoadViewIn setDuration:.5];
[applicationIntroLoadViewIn setType:kCATransitionReveal];
[applicationIntroLoadViewIn setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn]];
[applicationIntroLoadViewIn setValue:@"IntroFadeIn" forKey:@"IntroAnimation"];
[applicationIntroLoadViewIn setDelegate:self];
[[IVC.view layer] addAnimation:applicationIntroLoadViewIn forKey:nil];

and then :

i create a method to handle when the animation has finished:

- (void)animationDidStop:(CAAnimation *)animation finished:(BOOL)flag{
NSString* value = [animation valueForKey:@"IntroAnimation"];

if ([value isEqualToString:@"IntroFadeIn"]){
    //this def gets called NSLog shows up
    [[IVC.view layer] removeAllAnimations];
    [IVC.view removeFromSuperview];//remove intro animation
    [IVC release];
    IVC=nil;
}

there are no reported leaks, the view is removed , but the memory still stays 3.6MB in Leaks? ANy reason why this would happen? I don't alloc the animation* so i feel that should not need to be cleaned up, but this suggests that something is still holding onto to my IVC view

Any help much appreciated.

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