问题
I know that if we want to auto fetch the OTP(if we use single textfield) we need to use
otpTextField.textContentType = .oneTimeCode
But, If we use multiple textfield(According to following image)
how should we achieve this ?
回答1:
If you can get the auto OTP for single field, you can split that text into your four text fields. I believe.
You may have to use textField's change observer as like below,
textField.addTarget(self, action: #selector(textFieldDidChange(_:)), for: .editingChanged)
func textFieldDidChange(_ textField: UITextField) {
// here check you text field's input Type
if textField.textContentType == UITextContentType.oneTimeCode{
//here split the text to your four text fields
if let otpCode = textField.text, otpCode.count > 3{
textField.text = String(otpCode[otpCode.startIndex])
textField1.text = String(otpCode[otpCode.index(otpCode.startIndex, offsetBy: 1)])
textField2.text = String(otpCode[otpCode.index(otpCode.startIndex, offsetBy: 2)])
textField3.text = String(otpCode[otpCode.index(otpCode.startIndex, offsetBy: 3)])
}
}
}
回答2:
What I do is similar to @Natarajan's answer, but I use UITextFieldDelegate method. On viewDidAppear your first text field should become first responder and be of type oneTimeCode.
func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
// Fill your textfields here
return true
}
来源：https://stackoverflow.com/questions/53413385/how-to-auto-fetch-otp-if-we-use-multiple-text-fields