如何处理Flubase上的Firebase Auth异常

（21/02/20）编辑：这个答案很旧，其他答案包含跨平台解决方案，因此您应该首先看看他们的解决方案，并将其视为后备解决方案。

firebase auth插件实际上还没有合适的跨平台错误代码系统，因此您必须独立处理android和ios的错误。

我当前正在使用此github问题的临时修复程序：＃20223

请注意，因为它是 临时 修复程序，所以不要指望它作为永久解决方案是完全可靠的。

enum authProblems { UserNotFound, PasswordNotValid, NetworkError }try {  FirebaseUser user = await FirebaseAuth.instance.signInWithEmailAndPassword(      email: email,      password: password,  );} catch (e) {  authProblems errorType;  if (Platform.isAndroid) {    switch (e.message) {      case 'There is no user record corresponding to this identifier. The user may have been deleted.':        errorType = authProblems.UserNotFound;        break;      case 'The password is invalid or the user does not have a password.':        errorType = authProblems.PasswordNotValid;        break;      case 'A network error (such as timeout, interrupted connection or unreachable host) has occurred.':        errorType = authProblems.NetworkError;        break;      // ...      default:        print('Case ${e.message} is not yet implemented');    }  } else if (Platform.isIOS) {    switch (e.pre) {      case 'Error 17011':        errorType = authProblems.UserNotFound;        break;      case 'Error 17009':        errorType = authProblems.PasswordNotValid;        break;      case 'Error 17020':        errorType = authProblems.NetworkError;        break;      // ...      default:        print('Case ${e.message} is not yet implemented');    }  }  print('The error is $errorType');}