Question

I have that code. It can add edit button to navigatin bar, but back button still exists, but it becomes unresponsible.

UIBarButtonItem *editButton = [[UIBarButtonItem alloc] 
                               initWithTitle:@"Edit"                                            
                               style:UIBarButtonItemStyleBordered 
                               target:nil 
                               action:nil];
[[self.navigationController.navigationBar.items objectAtIndex:1] setRightBarButtonItem:editButton];

[[self.navigationController.navigationBar.items objectAtIndex:1]setHidesBackButton:YES];

Answer 1

simply and short:

  self.navigationItem.backBarButtonItem = nil;

or

  self.navigationItem.leftBarButtonItem = nil;