![](/img/trans.png)
[英]Can't register user in firebase (firebase_auth/unknown: null)
[英]Unhandled Exception: [firebase_auth/unknown] null: Error in Phone Authentication using flutter/firebase
我已將此鏈接用作教程: https://firebase.flutter.dev/docs/auth/phone/但不知何故,當我按下按鈕時,我收到此錯誤:
[ERROR:flutter/lib/ui/ui_dart_state.cc(186)] Unhandled Exception: [firebase_auth/unknown] null
E/flutter ( 6765): #0 MethodChannelFirebaseAuth.verifyPhoneNumber (package:firebase_auth_platform_interface/src/method_channel/method_channel_firebase_auth.dart:583:7)
E/flutter ( 6765): <asynchronous suspension>
E/flutter ( 6765): #1 _OTPScreenState._verifyMyPhoneNumber (package:food_delivery_app/UIForAllCategory/PhoneAuth/OTPScreen.dart:41:5)
E/flutter ( 6765): <asynchronous suspension>
E/flutter ( 6765):
D/ViewRootImpl[Toast]( 6765): hardware acceleration = true , fakeHwAccelerated = false, sRendererDisabled = false, forceHwAccelerated = false, sSystemRendererDisabled = false
我在 Firebase 啟用了電話身份驗證,並重新下載了 GoogleServices 文件,但始終面臨此錯誤。 這是第一個在按下按鈕時運行的 function:
_verifyMyPhoneNumber() async {
//This handler will only be called on Android devices which support automatic SMS code resolution.
await FirebaseAuth.instance.verifyPhoneNumber(
phoneNumber: '+92${this.widget.phoneNumber}',
verificationCompleted: (PhoneAuthCredential credential) async {
await FirebaseAuth.instance
.signInWithCredential(credential)
.then((value) async {
if (value.user != null) {
//Change state and move to next Screen
setState(() {
this.widget.inProgress=false;
});
String myNumber=this.widget.phoneNumber;
debugPrint("My number= $myNumber");
prefs.setString("phone", "0$myNumber");
//Getting values from preferences
String number= prefs.getString("phone");
String email= prefs.getString("email");
String username= prefs.getString("username");
String uid= prefs.getString("Gid");
debugPrint("Details: $number, $email, $username,$uid");
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => EnteryPoint()),
);
}
});
},
//In case, if Some error occured at Firebase then
verificationFailed: (FirebaseAuthException e) {
//Change state and Go back with a prompt
setState(() {
this.widget.inProgress=false;
});
Fluttertoast.showToast(
msg: "Error: $e",
toastLength: Toast.LENGTH_SHORT,
gravity: ToastGravity.CENTER,
timeInSecForIosWeb: 2,
backgroundColor: Colors.black87,
textColor: Colors.white,
fontSize: 12.0);
Navigator.of(context).pop(); //Go back to previious screen
},
codeSent: (String verficationID, int resendToken) {
debugPrint("Code is sent from Server, Soon you will recieve it");
//Change state and Let user to enter the code when received
setState(() {
this.widget.inProgress=false;
});
Fluttertoast.showToast(
msg: "Please wait, You will soon receive the code!",
toastLength: Toast.LENGTH_SHORT,
gravity: ToastGravity.CENTER,
timeInSecForIosWeb: 2,
backgroundColor: Colors.black87,
textColor: Colors.white,
fontSize: 12.0);
setState(() {
_verificationCode = verficationID;
});
},
codeAutoRetrievalTimeout: (String verificationID) {
debugPrint("This device has not automatically resolved an SMS message within a certain Timeframe");
setState(() {
_verificationCode = verificationID;
});
},
timeout: Duration(seconds: 60));
}
請幫忙!
檢查您是否在程序開始時有一個 firebaseapp 實例(主函數)。 使用 await Firebase.initializeApp() 創建實例;
您的例外是“firebase_auth 的實例為空”並且 Firebase Auth 在沒有 firebaseapp 的情況下不起作用。 未處理的異常:[firebase_auth/unknown] null
FirebaseAuth auth=FirebaseAuth.instance;
auth.userChanges();
auth.instance.verifyPhoneNumber(
//code`enter code here`
);
如果您嘗試從一台設備進行多次登錄
Firebase 有授權嘗試限制。 隔天再試。
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.