[ios/Swift3.0] TextView re-positioning when keyboard shown

TextView re-positioning when keyboard shown

(Swift TextView resize when keyboard shown : Swift TextView 키보드 리사이즈)

참고 : https://youtu.be/VuiPGJOEBH4

• control TextView in ScrollView

• we need textViewDidBeginEditing(), textViewDidEndEditing() function (override)

• when keyboard shown (become editing mode), we control scrollview's contentOffSet

• change x, y coordinate

func textViewDidBeginEditing(_ textView: UITextView) {
    if memoTextView == textView{
      scrollView.setContentOffset(CGPoint(x: 0, y: 350), animated: true)
      }
}

func textViewDidEndEditing(_ textView: UITextView) {
    scrollView.setContentOffset(CGPoint(x: 0, y: 330), animated: true)
}