title: Setting contentInset of UIScrollView not working
body: <p>I am using Apple's proposed way of revealing a UITextfield, which gets hidden by the keyboard when selected (see listing 5-1): <a href="https://developer.apple.com/library/ios/documentation/StringsTextFonts/Conceptual/TextAndWebiPhoneOS/KeyboardManagement/KeyboardManagement.html#//apple_ref/doc/uid/TP40009542-CH5-SW1" rel="nofollow">https://developer.apple.com/library/ios/documentation/StringsTextFonts/Conceptual/TextAndWebiPhoneOS/KeyboardManagement/KeyboardManagement.html#//apple_ref/doc/uid/TP40009542-CH5-SW1</a></p>
  
  <p>This is not working for me though because every time I set the conentInset my scrollView automatically scrolls up just a few pixels and thats it. Even if I remove the scrollRectToVisible call my scrollView still moves up. If I set the contentInset in viewDidLoad everything works as excepted.</p>
  
  <p>Note: I am currently not using autolayout. If I turn autolayout on nothing happen at all.</p>
  
  <p>Any suggestions? </p>