How do I pass data from a tab bar controller to one of its tabs?

Question

I have a UITabBarController set up in storyboard. I want to pass a dictionary of data from the tab bar controller for use in the appropriate child tab, which is a standard UIVie

Answer 1

Your best bet is to use notifications.

In your tab bar, you would do this:

NSDictionary *myDictionary; // Populate this with your data.

// Fire the notification along with your NSDictionary object.
[[NSNotificationCenter defaultCenter] postNotificationName:@"Some_Notification_Name" 
                                                    object:myDictionary];        

Then in your child tab ViewController, you would "listen" for that notification.

[[NSNotificationCenter defaultCenter] addObserver:self 
                                         selector:@selector(handleNotification:) 
                                             name:@"Some_Notification_Name" 
                                           object:nil];

- (void)handleNotification:(id)object {
  // Use your NSDictionary object here.
}