将文本视图退出为第一响应者，并在按下回车键时将文本字段设为第一响应者

Question

I have an app with a text view and a text field where the user inputs a question in the view and an answer in the field. I want it to resign the view as first responder when the user presses return and make the field first responder and I tried the code below but it doesn't seem to be working and I can't figure out why

func textView(_ textView: UITextView, shouldChangeTextIn range: NSRange, replacementText text: String) -> Bool {
    if text=="\n"{
        questionTV.resignFirstResponder()
        answerTF.becomeFirstResponder()
        return false
    }
    return true
}

Answer 1

I've tried the following code:

func textView(_ textView: UITextView, shouldChangeTextIn range: NSRange, replacementText text: String) -> Bool {
        guard text == "\n" else { return true }

        textView.resignFirstResponder()
        textField.becomeFirstResponder()

        return false
    }

It works as expected.

I guess, the reason might be somewhere else. Do you have any more details to share?

Did you set text view's delegate? Do you stop at breakpoint inside shouldChangeTextIn method?

UPDATE:

In comments it came clear that you conformed to the wrong protocol. You need to conform to UITextViewDelegate instead of UITextFieldDelegate . You might want to keep UITextFieldDelegate conformance, if you need it for work with text field though.