我在 flutter 中遇到 firebase 身份验证问题

Question

i have this error when i run my app on debug mode i want to print auth token but when i reload the app i received this message D

> /ViewRootImpl@22a08dc\[MainActivity\]( 6846): Relayout returned: old=(0,0,720,1480) new=(0,0,720,1480) req=(720,1480)0 dur=14 res=0x3 s={true 4058093568} ch=false
> E/flutter ( 6846): \[ERROR:flutter/runtime/dart_vm_initializer.cc(41)\] Unhandled Exception: \[firebase_messaging/unknown\] java.io.IOException: FIS_AUTH_ERROR
> E/flutter ( 6846): #0      StandardMethodCodec.decodeEnvelope
> package:flutter/…/services/message_codecs.dart:653
> E/flutter ( 6846): #1      MethodChannel.\_invokeMethod
> package:flutter/…/services/platform_channel.dart:296
> E/flutter ( 6846): \<asynchronous suspension\>
> E/flutter ( 6846): #2      MethodChannel.invokeMapMethod
> package:flutter/…/services/platform_channel.dart:499
> E/flutter ( 6846): \<asynchronous suspension\>
> E/flutter ( 6846): #3      MethodChannelFirebaseMessaging.getToken
> package:firebase_messaging_platform_interface/…/method_channel/method_channel_messaging.dart:224
> E/flutter ( 6846): \<asynchronous suspension\>
> E/flutter ( 6846):

i tried to delete build folder and rebuild it and it's not works

Answer 1

Make sure you have installed the latest firebase_auth and firebase_core packages. If the issue still persists, check whether you have integrated firebase properly. Delete the firebase_options.dart file (android) and try to integrate your firebase project with your flutter application again

Answer 2

If I guessed well, the problem is that when you reaload, the token is not available yet, because the session is loading or something like.

and I think you are getting your token like this final token = objectWithToken.token and this causes the error because token is undefined so you should make a condition