firebase_auth：当用户被禁用时抛出 PlatfromException 而不是 FirebaseAuthInvalidUserException？答案

【问题标题】：firebase_auth: throws PlatfromException instead of FirebaseAuthInvalidUserException when user is disabled?firebase_auth：当用户被禁用时抛出 PlatfromException 而不是 FirebaseAuthInvalidUserException？
【发布时间】：2020-05-20 00:56:32
【问题描述】：

FlutterSDK:1.12.13+hotfix.7

这是我的简单代码：

final PhoneVerificationCompleted phoneVerificationCompleted =
        (AuthCredential credential) async{
          print("verified $phoneNumber");


         try{
                await FirebaseAuth.instance.signInWithCredential(credential);

                } on PlatformException catch (exception){
                  print(exception);

                } catch (error){

                }

在我尝试从 Firebase 控制台禁用该帐户之前，它工作正常。根据firebase docs FirebaseAuth 应该抛出 FirebaseAuthInvalidUserException 无论如何，我仍然无法处理这个抛出的 PlatFormException 。这就是我在禁用用户尝试登录时得到的结果。

[ +876 ms] E/flutter ( 2479): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception:
PlatformException(ERROR_USER_DISABLED, The user account has been disabled by an administrator., null)
[ +4 ms] E/flutter ( 2479): #0 StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:569:7)
[ +29 ms] E/flutter ( 2479): #1 MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:321:33)
[ +2 ms] E/flutter ( 2479):
[ +17 ms] E/flutter ( 2479): #2 MethodChannel.invokeMapMethod (package:flutter/src/services/platform_channel.dart:349:48)
[ +4 ms] E/flutter ( 2479): #3 MethodChannelFirebaseAuth.signInWithCredential
(package:firebase_auth_platform_interface/src/method_channel_firebase_auth.dart:161:23)
[ +19 ms] E/flutter ( 2479): #4 FirebaseAuth.signInWithCredential (package:firebase_auth/src/firebase_auth.dart:208:10)
[ +2 ms] E/flutter ( 2479): #5 _RegisterUiState.verifyNumber.
(package:highest_price/ui/register_ui.dart:47:45)
[ +1 ms] E/flutter ( 2479): #6 MethodChannelFirebaseAuth._callHandler
(package:firebase_auth_platform_interface/src/method_channel_firebase_auth.dart:377:30)
[ +1 ms] E/flutter ( 2479): #7 MethodChannel._handleAsMethodCall (package:flutter/src/services/platform_channel.dart:402:55)
[ ] E/flutter ( 2479): #8 MethodChannel.setMethodCallHandler.
(package:flutter/src/services/platform_channel.dart:370:54)
[ +1 ms] E/flutter ( 2479): #9 _DefaultBinaryMessenger.handlePlatformMessage
(package:flutter/src/services/binding.dart:200:33)
[ +3 ms] E/flutter ( 2479): #10 _invoke3. (dart:ui/hooks.dart:303:15)
[ +1 ms] E/flutter ( 2479): #11 _rootRun (dart:async/zone.dart:1126:13)
[ +19 ms] E/flutter ( 2479): #12 _CustomZone.run (dart:async/zone.dart:1023:19)
[ +1 ms] E/flutter ( 2479): #13 _CustomZone.runGuarded (dart:async/zone.dart:925:7)
[ ] E/flutter ( 2479): #14 _invoke3 (dart:ui/hooks.dart:302:10)
[ ] E/flutter ( 2479): #15 _dispatchPlatformMessage (dart:ui/hooks.dart:162:5)
[ ] E/flutter ( 2479):

【问题讨论】：

标签： firebase flutter dart firebase-authentication

【解决方案1】：

尝试使用catchError，它可以让您捕获异步代码错误：

final PhoneVerificationCompleted phoneCompleted =  (AuthCredential credential) {
                FirebaseAuth.instance.signInWithCredential(credential).then((data){
                  print(data);
                }).catchError((error){
                  print(error);
                });
           };

查看文档：

https://api.flutter.dev/flutter/package-async_async/DelegatingFuture/catchError.html

【讨论】：

实际上我的代码编写的逻辑与您所做的相同，但仍然抛出 PlatformException 并且无论如何都无法处理：\ 似乎您不明白，它应该抛出 FirebaseAuthInvalidUserException ，但是相反，我们得到了 PlatformException ，由于某种原因它无法处理...
去掉try catch
删除try catch ???由于 FireBaseAuth 引发的异常而进行了尝试，我不明白您的想法。
stackoverflow.com/questions/59978750/…
如果我对未来的变量使用 .catch 错误，我可以打印错误，但是 vscode 调试器仍然给出未捕获的 PlatfromException 消息说'使用已被管理员禁用'这个错误我想捕捉并打印！