How to prevent present modally an active controller?

Question

We have 2 controllers: MainVC and ProfileVC. From MainVC we go to ProfileVC with profileButton press (left item on navigation bar).

In Profile VC we hav

Answer 1

I have found kind of solution for this

- (IBAction)menuButtonPressed:(id)sender
{
    [self.parentViewController presentViewController:self.menuAlert animated:YES completion:nil];
}

Alert view sometimes appears on menuVC, but it doesn't crash application and work normally. Answer was found there: Warning :-Presenting view controllers on detached view controllers is discouraged