问电子邮件地址的格式很差--颤振式防火墙。

EN

    MaterialButton(
                              shape: RoundedRectangleBorder(
                                  borderRadius:
                                      BorderRadius.all(Radius.circular(20.0))),
                              elevation: 5.0,
                              height: 40,
                              onPressed: () {
                                setState(() {
                                  showProgress = true;
                                });
                                signUp(
                                    emailController.text,
                                    passwordController.text,
                                    role,
                                    vehicleNo.text,
                                    name.text);
                              },
                              child: Text(
                                "Register",
                                style: TextStyle(
                                  fontSize: 20,
                                ),
                              ),
                              color: Colors.white,
                            )
                          ],
                        ),
                      ],
                    ),
                  ),
                ),
              ),
            ),
          ],
        ),
      ),
    );
  }

  void signUp(String name, String email, String password, String role,
      String vehicleNo) async {
    const CircularProgressIndicator();
    if (_formkey.currentState!.validate()) {
      await _auth
          .createUserWithEmailAndPassword(
              email: email.trim(), password: password.trim())
          .then(
            (value) => {
              postDetailsToFirestore(
                email,
                role,
                name,
                vehicleNo,
              ),
            },
          )
          .catchError((e) {
        print("its an error");
      });
    }
  }

  postDetailsToFirestore(
      String email, String role, String name, String vehicleNo) async {
    FirebaseFirestore firebaseFirestore = FirebaseFirestore.instance;
    User? user = _auth.currentUser;
    UserModel userModel = UserModel();
    userModel.email = email;
    userModel.name = name;
    userModel.vehicleNo = vehicleNo;
    userModel.uid = user!.uid;
    userModel.role = role;
    await firebaseFirestore
        .collection("users")
        .doc(user.uid)
        .set(userModel.toMap());

    Navigator.pushReplacement(
        context, MaterialPageRoute(builder: (context) => LoginScreen()));
  }
}