Question

In the viewDidLoad method I add any combination of these and I can’t get it to work:

 CGRect appFrame = [[UIScreen mainScreen] applicationFrame];
 [[self tableView] setBounds:appFrame]; 
 // self.view.frame = appFrame;
// self.view.bounds = appFrame;
// [[self tableVew] setFrame:appFrame];
 self.view.autoresizingMask = UIViewAutoresizingFlexibleHeight|UIViewAutoresizingFlexibleWidth;

There is always a 20px gap at the top with my previous screen showing through.

Answer 1

The 20px is the room for the status bar (the docs on -applicationFrame cover this). Have you turned off the status bar (with -setStatusBarHidden:animated:)?