'verificationCompleted != null'：在 Flutter Firebase Auth 中不正确答案

【问题标题】：'verificationCompleted != null': is not true in Flutter Firebase Auth'verificationCompleted != null'：在 Flutter Firebase Auth 中不正确
【发布时间】：2020-10-15 09:54:16
【问题描述】：

我正在使用 FirebaseAuth 发送 OTP 并验证用户编号。但面临 'verificationCompleted != null' 这个错误

这是我的代码

 Future<void> registerUser(BuildContext context) async {
      await FirebaseAuth.instance.verifyPhoneNumber(
      phoneNumber: mobileNum,
      timeout: const Duration(seconds: 15),
      verificationCompleted: (AuthCredential authCredential) {
        setState(() {
          authStatus = "Your account is successfully verified";
        });
      },
      verificationFailed: (FirebaseAuthException e) {
        print(e);
      },
      codeSent: (String verId, [int forceCodeResent]) {
        var verificationId = verId;
        setState(() {
          authStatus = "OTP has been successfully send";
        });
      },
      codeAutoRetrievalTimeout: (String verId) {
        var verificationId = verId;
        setState(() {
          authStatus = "TIMEOUT";
        });
      },
    );
 }

我面临的这个错误

[VERBOSE-2:ui_dart_state.cc(166)] Unhandled Exception: 'package:firebase_auth/src/firebase_auth.dart': Failed assertion: line 639 pos 12: 'verificationCompleted != null': is not true.
#0      _AssertionError._doThrowNew (dart:core-patch/errors_patch.dart:46:39)
#1      _AssertionError._throwNew (dart:core-patch/errors_patch.dart:36:5)
#2      FirebaseAuth.verifyPhoneNumber (package:firebase_auth/src/firebase_auth.dart:639:12)

【问题讨论】：

看看这个firebase.flutter.dev/docs/auth/phone
我用过这个但同样的错误
可能是电话号码导致了问题。输入的电话号码是否有正确的国家代码和号码之间的空格？

标签： firebase flutter dart firebase-authentication

【解决方案1】：

不确定您的问题，但它说：ERROR_SESSION_EXPIRED，短信代码已过期，_auth.verifyPhoneNumber() 您的超时持续时间非常短。尝试 60 秒。

await _auth.verifyPhoneNumber(
        phoneNumber: '+91${_phoneNumberController.text}',
        timeout: Duration(seconds: 60),
        verificationCompleted: verificationCompleted,
        verificationFailed: verificationFailed,
        codeSent: codeSent,
        codeAutoRetrievalTimeout: codeAutoRetrievalTimeout);

也可以看看docs。

【讨论】：