title: Get Keyboard frame without keyboardWillAppear userinfo notification, iOS
body: <p>I am developing an iPhone app in which I have to show some customize picker in case of a button event. But I don't want to hard coded values for the frame of my custom pickerView. I searched and found <code>keyboardWillShow</code> notification userInfo method, but in my case I am not showing keyboard so can't get frame out of it. Can anybody help me way out for getting keyboard frame that I can use for my customize picker?</p>