Global Variable

UIKeyboardFrameBeginUserInfoKey

The key for an NSValue object containing a CGRect that identifies the start frame of the keyboard in screen coordinates. These coordinates do not take into account any rotation factors applied to the window’s contents as a result of interface orientation changes. Thus, you may need to convert the rectangle to window coordinates (using the convert(_:from:) method) or to view coordinates (using the convert(_:from:) method) before using it.

Declaration

let UIKeyboardFrameBeginUserInfoKey: String