视图控制器未释放内存的问题

Question

I'm working on an app where different view controllers get pushed and dismissed via dismissModalViewControllerAnimated.

I'm having some memory issues with the app just crashing after a while. Looking at the Leaks instrument, I see that my overall allocations keeps going up and up. Even after the viewcontroller is dismissed, memory does not go down.

Are there any obvious reasons for this? What is the simplest and easiest way to find out why my app is crashing? Thanks

POSSIBLE SOLUTIONS

I went through some trial and error as well as googling and made a few changes:

1) A delegate relationship may have been retaining the viewController, so I changed the object's delegate property to weak.

2) NSTimer's should be invalidated before dismissing viewController.

3) UIView animations may interfere with dealloc being called? You can use [view.layer removeAllAnimations] to end them before popping your viewController.

Answer 1

If your memory is not go down after the dismissModalViewControllerAnimated .. it means you are creating the Global Object of the ViewController And after dismissing you are not setting the Object = nil ;

If you set nil then your memory goes down automatically.