Memory not being released right even dealloc method is called after dismissing view controller

Question

What am I doing is I am creating lots of UIView in the background and keep them in a NSMutableArray to use later. But when I dismiss the view controller I check the memory in Xcode and it seems some of memory not being released. I checked; view controller is being deallocated.

Check please: enter image description here

This happend after several showing and dismissing the view controller. Some of them is being released but not all. Thanks.

Have you enabled Zombie in your project? – Yogendra Aug 27 '14 at 08:03 — Yogendra, Aug 27 '14 at 08:03
Yes, it is enabled. @Student – Ulaş Sancak Aug 27 '14 at 08:04 — Ulaş Sancak, Aug 27 '14 at 08:04

score 5 · Accepted Answer · edited May 23 '17 at 12:01

5

Uncheck Enable Zombie Objects option under Edit Scheme. And try again.

A zombie is an object that has been deallocated, but references to it still exist and messages are still being sent to it

I think this link has more info for you What is NSZombie?

edited May 23 '17 at 12:01

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answered Aug 27 '14 at 08:05

Yogendra

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score 1 · Answer 2 · answered Aug 27 '14 at 08:53

I suppose you use arc, so it might be useful to explicitly release this in dealloc.

-(void)dealloc {
    for(UIView *vw in self.arrayOfViews) {
        vw = nil;
    }
    self.arrayOfViews = nil;
}

Using dealloc is a bit like the old days (pre-arc), but it will help you manage memory better. !important! --> NEVER call [super dealloc]; when using arc!

score 0 · Answer 3 · answered Aug 27 '14 at 08:13

In dealloc method release all views that you have in the array.

called the below method in your controller dealloc method

- (void)releaseViewArray
{
// Releasing views in the array 
    for (UIView *view in _viewArray) {
        [view release];
    }
// Releasing the array that holding the views
  [_viewArray release];
}

Memory not being released right even dealloc method is called after dismissing view controller

3 Answers3

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