Question

I need to wait (don’t execute the code) after the presentModalViewController until the modal view it’s dismissed, it’s possible or it’s a conceptual error ?

-(NSDictionary *)authRequired
{
    //This view write the settings when dismissed (plist)
    [self presentModalViewController:loginRegView animated:YES]; 
    //Read from the setting file (plist) and send back (it's a delagate method)
    NSMutableDictionary *ret=[[NSMutableDictionary alloc] init];
    [ret setObject:[app.settings get:@"user"] forKey:@"user"];
    [ret setObject:[app.settings get:@"pass"] forKey:@"pass"];
    return ret;
}

Answer 1

What you’ll have to do is create a LoginRegViewControllerDelegate protocol to which the View Controller that presents the Modal View Controller adheres, and have your LoginRegViewController (or whatever its name is) send a message to its delegate that it just closed / is going to close. In this delegate method, your delegate View Controller should read the just-set settings and do whatever it wants with them.