Flutter Android模拟器内部错误：FirebaseAuth登录异常捕获失效

问题描述 #

我使用VS Code开发Flutter应用，在Android 13版本的Pixel 3模拟器上执行Firebase邮箱密码登录时遇到问题。错误日志显示INVALID_LOGIN_CREDENTIALS内部错误，但代码中的FirebaseAuthException捕获块无法打印e.code，即使捕获所有异常也无效，尝试打印“User-not found”语句同样失败。

错误日志 #

I/FirebaseAuth(26473): Logging in as xyz@xyz.xyzw with empty reCAPTCHA token
D/EGL_emulation(26473): app_time_stats: avg=196.98ms min=3.58ms max=487.15ms count=5
W/System  (26473): Ignoring header X-Firebase-Locale because its value was null.
D/TrafficStats(26473): tagSocket(141) with statsTag=0xffffffff, statsUid=-1
E/RecaptchaCallWrapper(26473): Initial task failed for action RecaptchaAction(action=signInWithPassword)with exception - An internal error has occurred. [ INVALID_LOGIN_CREDENTIALS ]
I/flutter (26473): INVALID_LOGIN_CREDENTIALS

相关代码 #

try {
     final userCredential = await FirebaseAuth.instance
                            .signInWithEmailAndPassword(
                                email: email, password: password);
     print(userCredential);
} on FirebaseAuthException catch (e) {
     print(e.code);
}

解决方案建议 #

• 升级firebase_auth依赖到最新稳定版，旧版本可能存在异常捕获逻辑的bug
• 扩展异常捕获范围，覆盖所有可能的异常类型，确保不会遗漏：

  try {
    final userCredential = await FirebaseAuth.instance
        .signInWithEmailAndPassword(email: email, password: password);
    print(userCredential);
  } on FirebaseAuthException catch (e) {
    print('FirebaseAuth异常：${e.code} - ${e.message}');
  } on Exception catch (e) {
    print('通用异常：$e');
  } catch (e) {
    print('未知错误：$e');
  }
  

• 检查模拟器网络连接状态，确保能正常访问Firebase服务，日志中“empty reCAPTCHA token”可能是网络问题导致验证失败
• 确认Firebase控制台已启用邮箱/密码登录方式，同时检查测试账号的邮箱格式是否正确、密码是否匹配
• 清理模拟器缓存，重启VS Code和模拟器后重新构建应用

内容的提问来源于stack exchange，提问作者Rishabh Agarwal