Question

I’m using ARC + Storyboard.

I’m not using segues, or a UINavigationController, but rather presenting each individual view with:

UIStoryboard *storyBoard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
SecondViewController *secondViewController = [storyBoard instantiateViewControllerWithIdentifier:@"SecondVC"];

[self presentViewController:secondViewController animated:YES completion:nil];

So, a typical flow of my App is:

MainViewController
presentViewController:
SecondViewController
presentViewController:
ThirdViewController
…etc

After moving forward, I don’t want the previous view controller that I presented from hanging around in memory any more.

Right now, after I move on to my second view controller, I can put a break point in a timer function in MainViewController, and verify everything is still there.

Answer 1

Note : viewcontroller is automatically retained when presentViewController:,but in ARC it will handle retained object and will release it when appropriate .

Calling dismissModalViewController later on will release the retained controller automatically.