Flutter: Unable to get error code from Firebase Authentication?

Question

I'm trying to use Google's Firebase Authentication in my flutter application. However, when handling user's login, I cannot seem to find a "code" to differentiate the types of exceptions for me to handle.

Loginhandler.dart:

class LoginHandler {
  String signup(_username, _password) async {
    bool _valid = false;
    final prefs = await SharedPreferences.getInstance();
    FirebaseAuth.instance.createUserWithEmailAndPassword(
          email: _username, password: _password)
          .catchError((e) {
            print(e);
            print(e.message);
            print(e.code);
            print(e.details);
          });
...

Error outputs:

W/BiChannelGoogleApi(26738): [FirebaseAuth: ] getGoogleApiForMethod() returned Gms: com.google.firebase.auth.api.internal.zzal@4e727e7
W/IInputConnectionWrapper(26738): getCursorCapsMode on inactive InputConnection
I/flutter (26738): PlatformException(exception, The email address is already in use by another account., null)
I/flutter (26738): The email address is already in use by another account.
I/flutter (26738): exception
I/flutter (26738): null

I/flutter (26738): PlatformException(exception, The given password is invalid. [ Password should be at least 6 characters ], null)
I/flutter (26738): The given password is invalid. [ Password should be at least 6 characters ]
I/flutter (26738): exception
I/flutter (26738): null

I have followed this Stack Overflow thread which highlights I can use a switch statement, but the above error output have no error "codes" for me to work with.

Did you find any solution to this?

Aasiz
– Aasiz

2018-10-06 15:00:44 +00:00
Commented Oct 6, 2018 at 15:00 — Aasiz
– Aasiz, Commented Oct 6, 2018 at 15:00

Rami Alloush · Accepted Answer · 2019-05-28 21:33:39Z

2

I'm able to access the "code" property of the error on Android.

      try {
          // login logic
      } catch (e) {
        print('Error: $e');
        setState(() {
          _isLoading = false;
          if (_isIos) {
            _errorMessage = e.details;
          } else
            _errorMessage = e.message;
          print(e.code); // can access the code here
        });
      }

answered May 28, 2019 at 21:33

Rami Alloush

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Comments

TruongSinh · Accepted Answer · 2019-02-27 15:29:02Z

1

UPDATE:

This was a bug and it's already fixed with this PR https://github.com/flutter/plugins/pull/775.

~~According to my experience, on iOS there's a bug and you can't get the error codes, only the error text messages. On Android, the error codes do work fine.~~

On my apps I ended up checking for error text messages.

The issue is already being tracked on flutter, you can subscribe to it and get an update when its fixed.

~~By the way, this is the pull request that fixes it, however it's not yet merged.~~

edited Feb 27, 2019 at 15:29

TruongSinh

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answered Oct 25, 2018 at 20:36

Feu

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