swift textfield 和 textview 实时获取 输入内容

?

1 2 3 4 5 6 7 8 9

textfield :       func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {               let fullStr = (textField.text! as NSString).replacingCharacters(in: range, with: string)             delegate?.changeTextFieldText(tfTag: textField.tag, text: fullStr)           return true     }

　　

textview : 一样

?

1 2 3 4 5

func textView(_ textView: UITextView, shouldChangeTextIn range: NSRange, replacementText text: String) -> Bool {       let fullStr = (textField.text! as NSString).replacingCharacters(in: range, with: string)     return true }