Hiding a button between UIVIewControllers

Question

I have declared a Button in my MainViewController so when a user logs in it needs to show a button using self.mybutton.hidden = FALSE; but on my ProfileViewController I have the logout button which needs to hide the button again using self.mybutton.hidden = TRUE;

Which is the best way to communicate between views?

Answer 1

NSUserDefaults could be an easy solution for you without too much thought. Save a particular BOOL value (if you insist) into that, then in each view check that value whether you should be hiding or showing that button:

NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
[defaults setBool:TRUE forKey:@"checkThisBool"];

Answer 2

If you are using storyboard, you can pass any information under the prepareForSegue function.

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
  if ([segue.identifier isEqualToString:...]) { 
    MyViewController *controller = (MyViewController *segue.destinationViewController;
    controller.myProperty1 = ...; 
    controller.myProperty2 = ...;
  }
}