如何将电话与电子邮件/密码认证联系起来？

Question

我正在尝试创建一个flutter应用程序，在创建一个用户的电子邮件/密码后，他们被保存在firebase，然后用户输入他的电话号码，发送OTP和用户在验证后登录。我的问题是，当这两个步骤都完成时，firebase正在创建两个单独的帐户，一个是电子邮件帐户，另一个是电话帐户。请告诉我如何创建一个既有电子邮件/密码又有电话的单一帐户。我还想同时使用电子邮件/密码或电话登录。或任何其他方式创建具有电子邮件/密码和电话的用户。

void _verifyPhoneNumber() async {
if (mounted)
  setState(() {
    _message = '';
  });
final PhoneVerificationCompleted verificationCompleted =
    (AuthCredential phoneAuthCredential) {
  _firebaseUser.updatePhoneNumberCredential(phoneAuthCredential);
  if (mounted)
    setState(() {
      _message = 'Received phone auth credential: $phoneAuthCredential';
    });
};

 final PhoneVerificationFailed verificationFailed =
    (AuthException authException) {
  showToast(authException.message,
      gravity: Toast.TOP, duration: Toast.LENGTH_LONG);
  if (mounted)
    setState(() {
      _isLoading = false;
      _message =
          'Phone number verification failed. Code: ${authException.code}. Message: ${authException.message}';
    });
};

final PhoneCodeSent codeSent =
    (String verificationId, [int forceResendingToken]) async {
  print('Please check your phone for the verification code.');
  _verificationId = verificationId;
  setState(() {
    _isLoading = false;
  });
  Navigator.of(context).pushReplacement(new MaterialPageRoute(
      builder: (BuildContext context) =>
          new VerifyOtp(_firebaseUser, verificationId)));
  };

 final PhoneCodeAutoRetrievalTimeout codeAutoRetrievalTimeout =
    (String verificationId) {
  _verificationId = verificationId;
};

await _firebaseAuth.verifyPhoneNumber(
    phoneNumber: phoneController.text,
    timeout: const Duration(minutes: 2),
    verificationCompleted: verificationCompleted,
    verificationFailed: verificationFailed,
    codeSent: codeSent,
    codeAutoRetrievalTimeout: codeAutoRetrievalTimeout);
}

   final AuthCredential credential = PhoneAuthProvider.getCredential(
    verificationId: widget.verificationId,
    smsCode: otpController.text,
  );

await _firebaseAuth.signInWithCredential(credential).then((user) {

  }).catchError((error) {
    showToast(error.toString(),
        gravity: Toast.TOP, duration: Toast.LENGTH_LONG);

  });

Answer 1

 await _firebaseAuth.signInWithCredential(credential).then((user) {

}).catchError((error) {
  showToast(error.toString(),
    gravity: Toast.TOP, duration: Toast.LENGTH_LONG);

});

只需将其替换为

firebaseUser.linkWithCredential(credential).then((user) {
    print(user.uid);
  }).catchError((error) {
    print(error.toString());
  });

这是我的工作.....