用于创建手机身份验证凭据的短信验证码无效

Question

我该如何解决这个问题，我已经在我的 Flutter 应用程序中实现了电话身份验证。短信代码已发送到我的设备上，但在验证发送的短信代码时遇到问题。我该如何解决这个问题？

 this is the error:
   [firebase_auth/invalid-verification-code] The sms verification code used to create the phone auth credential is invalid

这是我的验证电话功能：

await  _auth.verifyPhoneNumber(
             phoneNumber: _phoneController.text.toString().trim(),
             verificationCompleted: (phoneAuthCredential)async{
                 setState(() {
                   showloading = false;
                 });

                 signInWithPhoneAuthCredentials(phoneAuthCredential);
             },
             verificationFailed: (verificationFailed)async{
               setState(() {
                 showloading = false;
               });
               // ${verificationFailed.message}
              _scaffoldKey.currentState.showSnackBar(SnackBar(content: new Text("VerificationFailed::${verificationFailed.message}" )));

              debugPrint("ERROR PHONE VERIFY::::: ${verificationFailed.message}");
             },
             codeSent: (verificationId, resendingToken)async{

             setState(() {
               showloading = false;
               currentState = MobileVerificationState.SHOW_OTP_FORM_STATE;
               verificationCode = verificationId;

             });
             },
             codeAutoRetrievalTimeout:(verificationId)async{

             });