title: How can adjust search bar size of UISearchDisplayController
body: <p>I am using UISearchDisplayController using nib file.But in that when I am going to search at that time search bar frame's size automatically resize as view's size.I have made changes with its contentStretch ,frame ,and also try to made other changes but could not fix it's size.So if you have any suggestion for it  so please tell me.
  Thanks </p>