Not sure why UIView is being nudged up by around 10px

Question

I\'ve created a simple iPhone app which has two .xib files. In the app delegate at application did finish launching I display the first .xib file by calling:

Answer 1

Here is my solution:

// adjust the frame of subview which is going to be add
self.navController.view.frame = CGRectMake(0, 0, 320, 460);
[self.view addSubView:self.navController.view];

It works fine for me now, good luck~ :)