Question

I’ve written a little application with different UIViewControllers. In my AppDelegate I’ve this:

self.window.rootViewController = [[UINavigationController alloc]
                                 initWithRootViewController:
                                 [[MainViewController alloc] init]];

MainViewController, contains a method:

- (void)aMethod
{
    [self.navigationController pushViewController:[[CellViewController alloc] init]             
                                         animated:TRUE];
}

CellViewController, contains a method:

- (void)aMethod
{
    StartToBuildViewController * controller = [[StartToBuildViewController alloc] init];
    [self.navigationController pushViewController:controller animated:true];
}

And so on. My question is: What’s the best way to share informations from a UIViewController to others? I just need to store flag status and/or datetime value. Can I use global variables? Database? What else?

I came from php, and in php I would use database or session variables.

Answer 1

In IOS SDK, its depend on user requirement and understanding.
While you can store flags in NSUserDefault or Create Global variable using extern or create AppDelegate variable with define property.

thanks