title: iOS SDK: Dismiss keyboard when a button gets clicked?
body: <p>How can I dismiss the keyboard when the user clicks a button?
  A short example for a better understanding: the user edits some text in some textfields and at the end he doesn't click "Done" or smething else on the keyboard, but he clicks on an button "Save" while the keyboard is still shown. So, how can I now dismiss the keyboard?</p>
  
  <p>Thx. Regards, Daniel</p>