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