title: How to show a keyboard via press a NSButton?
body: <p>I only know few ways to show a keyboard on iOS</p>
  
  <p>touch textfield,search bar,textview.....</p>
  
  <p>Is it can via touch a button to show keyboard ???</p>
  
  <p>I wish I can use this way to set a button tittle if the button is no tittle or can rename it.</p>
  
  <p>Thank you guys~</p>