Question

I need a tabbed application to switch from view controller 2 to view controller 1 (home view controller) and then immediately call a method on view controller 1, without any input from the user. Using viewDidLoad doesn’t work, since (as far as I can tell) the home view controller stays loaded the whole time; making it visible doesn’t load it again. I’ve been trying to use -(void)tabBarController: didSelectViewController: but it’s not getting called either, I assume because it only works with user-initiated selections, not programmatic selections.

So what can I do?

Answer 1

You can use the method -(void) viewWillAppear to do this. Once the view is already loaded, you do whatever you want when it appear! Here it is:

- (void) viewWillAppear:(BOOL)animated {
   [super viewWillAppear:animated];
   // You code here to update the view.
}