Android上的Firebase：如何检查Firebase身份验证失败的原因？

问题描述

我使用Android上的 Firebase 和 Firebase身份验证功能。

我尝试 FirebaseAuth.signInWithEmailAndPassword ，万一它失败，我想知道为什么signIn进程失败？

signInWithEmailAndPassword 方法具有 addOnFailureListener API。
我可以在 onFailure 中捕获 Exception （也许 FirebaseAuthException code> callback方法。

pre $ auth.signInWithEmailAndPassword（loginRequest.id，loginRequest.password）
.addOnFailureListener （新的OnFailureListener（）{
@Override
public void onFailure（@NonNull Exception e）{
if（e instanceof FirebaseAuthException）{
（（FirebaseAuthException）e）.getErrorCode ））;
}
}
}）;

我想知道SignIn进程失败的原因。在 onFailure 。

我认为可以这样做：

1. e 实例类型check（e instanceOf FirebaseAuthInvalidUserException 或 FirebaseAuthInvalidCredentialsException 或,,,）


2. e.getErrorCode（）

我不想输入支票（很脏）。
我更喜欢上面选择的方式。但是我找不到 e.getErrorCode（）返回值集合的定义。
例如 ERROR_INVALID_EMAIL ， ERROR_ACCOUNT_EXISTS_WITH_DIFFERENT_CREDENTIAL 等
（它们在哪里定义？ p>

请告诉我哪个是检查 Firebase身份验证失败的原因的最佳方法。

谢谢。

解决方案

我在Firebase库中发现了一些类似于失败消息的代码迄今为止看到。但还没有尝试。您可以尝试一下。

 （ERROR_INVALID_CUSTOM_TOKEN，自定义令牌格式不正确，请检查文档。 ））; 
（ERROR_CUSTOM_TOKEN_MISMATCH，自定义令牌对应于不同的受众。））; 
（ERROR_INVALID_CREDENTIAL，提供的验证凭据格式错误或已过期。））; 
（ERROR_INVALID_EMAIL，电子邮件地址格式不正确））; 
（ERROR_WRONG_PASSWORD，密码无效或用户没有密码））; 
（ERROR_USER_MISMATCH，提供的凭证不对应于以前登录的用户。））; 
（ERROR_REQUIRES_RECENT_LOGIN，这个操作是敏感的，需要最近的认证，再次登录后再重试这个请求。））; 
（ERROR_ACCOUNT_EXISTS_WITH_DIFFERENT_CREDENTIAL，一个账号已经有了相同的电子邮件地址，但登录凭据不同，请使用与此电子邮件地址相关的提供商登录。 
（ERROR_EMAIL_ALREADY_IN_USE，电子邮件地址已被另一个帐户使用））; 
（ERROR_CREDENTIAL_ALREADY_IN_USE，这个证书已经与一个不同的用户帐户相关联。））; 
（ERROR_USER_DISABLED，用户帐户已被管理员禁用））; 
（ERROR_USER_TOKEN_EXPIRED，用户的凭证不再有效，用户必须重新登录））; 
（ERROR_USER_NOT_FOUND，没有对应于这个标识符的用户记录，用户可能已经被删除了。 
（ERROR_INVALID_USER_TOKEN，用户的凭证不再有效，用户必须再次登录））; 
（ERROR_OPERATION_NOT_ALLOWED，这个操作是不允许的，你必须在控制台中启用这个服务。））; 
（ERROR_WEAK_PASSWORD，给定的密码无效。））; 
  

I use Firebase on Android and Firebase Auth functions.

I try FirebaseAuth.signInWithEmailAndPassword and in case it fails I want to know "Why the signIn process failed?"

The signInWithEmailAndPassword method has addOnFailureListener API.And I can catch the Exception(maybe FirebaseAuthException) in onFailure callback method.

auth.signInWithEmailAndPassword(loginRequest.id, loginRequest.password)
  .addOnFailureListener(new OnFailureListener() {
    @Override
    public void onFailure(@NonNull Exception e) {
      if (e instanceof FirebaseAuthException) {
        ((FirebaseAuthException) e).getErrorCode());
      }
    }
  });

I want to know why the SignIn process failed. in onFailure.

I think it could be done as follows:

1. e instance type check(e instanceOf FirebaseAuthInvalidUserException or FirebaseAuthInvalidCredentialsException or ,,,)
2. e.getErrorCode()

I do not want to type checks(it's dirty).
I prefer the way in choice 2. above. But I could not find the definition of e.getErrorCode() return values collection.e.g ERROR_INVALID_EMAIL, ERROR_ACCOUNT_EXISTS_WITH_DIFFERENT_CREDENTIAL, etc.(Where are they defined?)

Please tell me which is the best way to check the reason for Firebase auth failed.

Thanks.

解决方案

I found some codes inside Firebase library which is similar to the failure messages have seen so far. But havent tried yet. You can give it a try.

    ("ERROR_INVALID_CUSTOM_TOKEN", "The custom token format is incorrect. Please check the documentation."));
    ("ERROR_CUSTOM_TOKEN_MISMATCH", "The custom token corresponds to a different audience."));
    ("ERROR_INVALID_CREDENTIAL", "The supplied auth credential is malformed or has expired."));
    ("ERROR_INVALID_EMAIL", "The email address is badly formatted."));
    ("ERROR_WRONG_PASSWORD", "The password is invalid or the user does not have a password."));
    ("ERROR_USER_MISMATCH", "The supplied credentials do not correspond to the previously signed in user."));
    ("ERROR_REQUIRES_RECENT_LOGIN", "This operation is sensitive and requires recent authentication. Log in again before retrying this request."));
    ("ERROR_ACCOUNT_EXISTS_WITH_DIFFERENT_CREDENTIAL", "An account already exists with the same email address but different sign-in credentials. Sign in using a provider associated with this email address."));
    ("ERROR_EMAIL_ALREADY_IN_USE", "The email address is already in use by another account."));
    ("ERROR_CREDENTIAL_ALREADY_IN_USE", "This credential is already associated with a different user account."));
    ("ERROR_USER_DISABLED", "The user account has been disabled by an administrator."));
    ("ERROR_USER_TOKEN_EXPIRED", "The user\'s credential is no longer valid. The user must sign in again."));
    ("ERROR_USER_NOT_FOUND", "There is no user record corresponding to this identifier. The user may have been deleted."));
    ("ERROR_INVALID_USER_TOKEN", "The user\'s credential is no longer valid. The user must sign in again."));
    ("ERROR_OPERATION_NOT_ALLOWED", "This operation is not allowed. You must enable this service in the console."));
    ("ERROR_WEAK_PASSWORD", "The given password is invalid."));

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