title: IOS: Default properties values
body: <p>If I write directly something like this in implementation file:</p>
  
  <pre><code>UINavigationBar *navBar = [[UINavigationBar alloc] init];
  </code></pre>
  
  <p>In this case I haven't set any property to my navBar, what will be its property/properties/nothing.</p>
  
  <p><strong>EDIT</strong></p>
  
  <pre><code>-(IBAction) loginButtonPressed:(UIButton *)sender
  {
  UITabBarController *tabBar = [[UITabBarController alloc] init];
  FirstScreen *f = [[FirstScreen alloc] initWithNibName:@"FirstScreen" bundle:nil];
  UINavigationController *nav1 = [[UINavigationController alloc] initWithRootViewController:f];
  nav1.title = @"FirstScreen";
  
  SecondScreen *s = [[SecondScreen alloc] initWithNibName:@"SecondScreen" bundle:nil];
  UINavigationController *nav2 = [[UINavigationController alloc] initWithRootViewController:s];
  nav2.title = @"SecondScreen";
  
  ThirdScreen *t = [[ThirdScreen alloc] initWithNibName:@"ThirdScreen" bundle:nil];
  UINavigationController *nav3 = [[UINavigationController alloc] initWithRootViewController:t];
  nav3.title = @"ThirdScreen";
  
  NSArray *navControllers = [NSArray arrayWithObjects:f, s, t, nil];
  
  tabBar.viewControllers = navControllers;
  
  }
  </code></pre>