ARC下没有发布内存(Memory is not released under ARC)

 我有一个带有父视图控制器的应用程序。 它有一些按钮，当单击其中一个按钮时，它会显示一个模态视图控制器（使用XIB）。 我用来呈现和解散Modal VC的代码是： 
 
iPadViewController *iPadVC = [[iPadViewController alloc] initWithNibName:nil bundle:nil];
        [self presentViewController:iPadVC animated:YES completion:NULL];
 
 并解雇： 
 
-(IBAction)Back:(id)sender{
[self.presentingViewController dismissViewControllerAnimated:YES completion:nil];
}
 
 所以问题是，当我解雇它时，它不会释放任何内存。 如果我把它呈现3/4次就会崩溃。 我正在使用ARC，从来没有遇到过类似的问题，因为我坚持认为ARC完成了所有的内存管理工作。 我确实有一些需要大量空间的背景，他们也没有被释放。 我试过了 ： 
 
[backgroundImage removeFromSuperview];
backgroundImage=nil;
 
 使用此代码确实减少了内存，我不确定图像是否已被释放，因为下次按下按钮时内存增加到近300mb并因“内存压力”而终止。 如果VC被发布它可以正常工作，因为它在iPad上只使用160mb，在iPhone上只使用65mb。 此外，我的图像是通过Xib实用程序选择的： 
 
 IMG http://i42.tinypic.com/2z8yiva.png 
 
 我尝试使用Xcode仪器并且它没有显示任何泄漏（！）但它确实表明每次单击按钮时分配都在增长和增长。 
 
 使用Xcode Tools分配http://i43.tinypic.com/2eutv78.png 
 
 在我的ViewController.h上： 
 
IBOutlet UIImageView (...);
IBOutlet UIImageView (...);
IBOutlet UILabel (...);
IBOutlet UIButton (...);
IBOutlet NSTimer (...);
IBOutlet UIImage (...);
IBOutlet UIView (...);

-(IBAction)Back:(id)sender;

@property (nonatomic, assign) int ;
@property (nonatomic) IBOutlet UIButton ;
@property (nonatomic) IBOutlet UIButton ;
@property (nonatomic) IBOutlet UIButton ;
@property (nonatomic) IBOutlet UIView ;
@property (nonatomic) IBOutlet UILabel ;
 
 我试图提供有关我的代码的所有详细信息，但如果您还需要其他任何内容，请告诉我，并非常感谢您！ 

I have an app with a parent View Controller. It has some buttons and when one of them is clicked it presents a Modal View Controller (using XIB). The code I use to present and dismiss the Modal VC is : 
 
iPadViewController *iPadVC = [[iPadViewController alloc] initWithNibName:nil bundle:nil];
        [self presentViewController:iPadVC animated:YES completion:NULL];
 
and to dismiss :
 
-(IBAction)Back:(id)sender{
[self.presentingViewController dismissViewControllerAnimated:YES completion:nil];
}
 
So the problem is, when I dismiss it, it does not release any memory. And if I present it 3/4 times it crashes. I am using ARC, never had similar problems because I tough that ARC did all the memory management job. I do have some backgrounds that need a lot of space and they are not getting released either. I tried :
 
[backgroundImage removeFromSuperview];
backgroundImage=nil;
 
The memory does decrease using this code, I'm not sure if the image was released because the next time I press the button the memory increases to almost 300mb and terminates due to "memory pressure". If the VC was released it would work fine because it only uses 160mb on the iPad and 65mb on the iPhone. Also, My image is selected through the Xib utilities : 
 
IMG http://i42.tinypic.com/2z8yiva.png
 
And I tried to use Xcode instruments and it does not show any leak (!) but it does show that the allocations are growing and growing every time I click a button.
 
Allocations with Xcode Tools http://i43.tinypic.com/2eutv78.png
 
and on my ViewController.h:
 
IBOutlet UIImageView (...);
IBOutlet UIImageView (...);
IBOutlet UILabel (...);
IBOutlet UIButton (...);
IBOutlet NSTimer (...);
IBOutlet UIImage (...);
IBOutlet UIView (...);

-(IBAction)Back:(id)sender;

@property (nonatomic, assign) int ;
@property (nonatomic) IBOutlet UIButton ;
@property (nonatomic) IBOutlet UIButton ;
@property (nonatomic) IBOutlet UIButton ;
@property (nonatomic) IBOutlet UIView ;
@property (nonatomic) IBOutlet UILabel ;
 
I tried to give all the details about my code, but if you need anything else just let me know, and thank you all so much!

原文：https://stackoverflow.com/questions/20310304