Memory leak about the window.rootViewController

Question

I have found a strange memory leak problem. In my AppDelegate, I set the

self.window.rootViewController = loginViewController;

After setting the rootViewController point to loginViewController,and I finish the login logic.Then I go to my homeViewController, I call AppDelegate to change its rootViewController:

[UIApplication shareApplication].delegate.window.rootViewController = homeViewController;

However, I notice the -(void)dealloc in loginViewController is not called, i think a memory leak happen. After I search many similar question and test and test. I found that if I put the code in the same queue, memomy leak is disappear. For example,

NSBlockOperation *blockOperation = [NSBlockOperation blockOperationWithBlock:^{
      self.window.rootViewController = loginViewController;
}];
[[NSOperationQueue mainQueue] addOperation:blockOperation];
NSBlockOperation *blockOperation = [NSBlockOperation blockOperationWithBlock:^{
      [UIApplication shareApplication].delegate.window.rootViewController = homeViewController;
}];
[[NSOperationQueue mainQueue] addOperation:blockOperation];

loginViewController dealloc is successful I really wonder why it is? and more loginViewController is local variable

"However, I notice the -(void)dealloc in loginViewController"... you notice it doing *what*? — Droppy, Jul 13 '16 at 07:52
sorry. I have updated it. I mean `the dealloc` is not called — seguedestination, Jul 13 '16 at 10:07
And you don't have any other references to it (instance variables)? — Droppy, Jul 13 '16 at 10:19
did you happen to have a scenario like this? http://stackoverflow.com/a/41406823/1840269 — micmdk, Dec 31 '16 at 08:47

Memory leak about the window.rootViewController

0 Answers0