CODEWITHSUNDEEP
iosmemorymodalviewcontroller
gdm
gdm

Reputation: 7978

Dismiss UIViewController does not deallocate memory

I have this code

 -(void)didPressButton:(int)tag
    {
        // Preventivi?
        if (tag == 0)
        {
            if (addPrev == nil)
                addPrev = [[avvAddPreventivoViewController alloc] init];
            addPrev.delegate = self;
            UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:addPrev];
            navigationController.navigationBarHidden     = NO;
            [[navigationController navigationBar] setBarStyle:UIBarStyleBlack];
            [self presentViewController:navigationController animated:YES completion:nil];
            addPrev = nil;

        }
    }

When I show up the addPrev the memory increases, when show off the memory does not release. When the addPrev dismiss it fires a protocol methos, didCancel. I intercept it and release addPrev:

  -(void)didCancel
    {
        [self dismissViewControllerAnimated:YES completion:nil];
         addPrev = nil;
    }

enter image description here

Upvotes: 1

Views: 1040

Answers (1)

gdm
gdm

Reputation: 7978

Niling also the navigation controller improves drastically the memory allocation. Also, be careful to deallocate what you can deallocate in the dealloc of the pushed controller.

-(void)didPressButton:(int)tag
    {
        // Preventivi?
        if (tag == 0)
        {
            if (addPrev == nil)
                addPrev = [[avvAddPreventivoViewController alloc] init];
            addPrev.delegate = self;
            UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:addPrev];
            navigationController.navigationBarHidden     = NO;
            [[navigationController navigationBar] setBarStyle:UIBarStyleBlack];
            [self presentViewController:navigationController animated:YES completion:nil];
            addPrev = nil;
            navigationController = nil;

        }
    }

Upvotes: 1

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