my flutter firebase app always have same error - firebase

Question

I have made a online store app with flutter and backend on firebase , in sign up page whenever click on create account button it says same error, no matter if I put data on Text Fields or not, I am really confused about this!
the error is
given String is empty or null
import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';
import '../widgets/custom_button.dart';
import '../widgets/custom_input.dart';
import 'const.dart';
import 'login.dart';
class SingUP extends StatefulWidget {
SingUP({Key? key}) : super(key: key);
#override
State<SingUP> createState() => _SingUPState();
}
class _SingUPState extends State<SingUP> {
Future<void> advanceAlertDialog(String message) {
return Get.defaultDialog(
title: 'Invalid Input',
content: Text(message),
actions: [
ElevatedButton(
onPressed: () => Get.back(),
child: Text('OK !'),
)
],
contentPadding: EdgeInsets.all(15.0),
);
}
Future<String?> signInMethod() async {
try {
await FirebaseAuth.instance.createUserWithEmailAndPassword(
email: takeEmail, password: takePassword);
return 'ok';
} on FirebaseAuthException catch (error) {
if (error.code == 'weak-password') {
return 'the password is too week';
} else if (error.code == 'email-already-in-use') {
return 'The account with this email is already exist !';
}
return error.message;
} catch (error) {
return error.toString();
}
}
void signIn() async {
setState(() {
isLoading = true;
});
String? result = await signInMethod();
if (result != 'ok') {
advanceAlertDialog(result!);
setState(() {
isLoading = false;
});
} else {
setState(() {
isLoading = false;
});
Get.to(LoginPage());
Get.snackbar('Successful', 'Account Created !',
backgroundColor: Colors.greenAccent, icon: Icon(Icons.check_circle));
}
}
bool isLoading = false;
String takeEmail = '';
String takePassword = '';
#override
Widget build(BuildContext context) {
return Scaffold(
body: Container(
width: double.infinity,
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Container(
padding: EdgeInsets.only(top: 50),
child: Text(
'Create a New Account !',
style: Constans.headingTextStyle,
textAlign: TextAlign.center,
),
),
Column(
children: [
CustomInput(
hintText: 'Enter Your Email ...',
onChanged: (value) {
takeEmail = value;
},
checkPassword: false,
),
CustomInput(
hintText: 'Enter Your Password ...',
onChanged: (value) {
takeEmail = value;
},
checkPassword: true,
),
CustomButton(
text: 'Create Account',
loading: isLoading,
onTap: () {
signIn();
},
mode: false,
)
],
),
CustomButton(
text: 'Back to Login',
onTap: () => Get.back(),
mode: true,
loading: isLoading,
)
],
),
),
);
}
}

Answer 1

Emain and password widgets are the same takeEmail = value;, change the password onChange value to takePassword = value;, also where is exactly the error thrown?. I advice to add breakpoints to signInMethod() to see the input values of email: takeEmail, password: takePassword (both of this strings) and after the on FirebaseAuthException catch (error) { to see if the error is thrown from firebase or is in your code.