I am anew in GetX I try show snacbar with firebase error When the email already used But I have error with null safety I do not know why
**The snack bar for check box work fine The error
Exception caught by widgets library ======================================================= The following _CastError was thrown building GetSnackBar(dirty, dependencies: [MediaQuery, _EffectiveTickerMode], state: GetSnackBarState#e73b7): Null check operator used on a null value
Sing Up function in auth control
void signUpUsingFirebase({
required String name,
required String email,
required String password,
}) async {
try {
await auth.createUserWithEmailAndPassword(
email: email, password: password);
update();
} on PlatformException catch (error) { String title = error.code;
String message = '';
if (error.code == 'weak-password') {
message = 'The password provided is too weak.';
} else if (error.code == 'email-already-in-use') {
message = 'The account already exists for that email.';
} else {
message = error.message.toString();
}
Get.snackbar(
title ,
message,
snackPosition: SnackPosition.BOTTOM,
borderColor: Colors.green,
colorText: Colors.white,
);
}
catch (e) {
Get.snackbar(
'Error!',
e.toString(),
snackPosition: SnackPosition.BOTTOM,
borderColor: Colors.green,
colorText: Colors.white,
);
}
}
My SingUp screen
SignUpScreen({Key? key}) : super(key: key);
final fromKey = GlobalKey<FormState>();
final TextEditingController namecontroller = TextEditingController();
final TextEditingController emailcontroller = TextEditingController();
final TextEditingController passwordcontroller = TextEditingController();
final controller = Get.find<AuthController>();
@override
Widget build(BuildContext context) {
return SafeArea(
child: Scaffold(
appBar: AppBar(
backgroundColor: Get.isDarkMode ? Colors.white : darkGreyClr,
elevation: 0,
),
backgroundColor: Get.isDarkMode ? Colors.white : darkGreyClr,
body: SingleChildScrollView(
child: Column(
children: [
SizedBox(
width: double.infinity,
height: MediaQuery.of(context).size.height / 1.3,
child: Padding(
padding: EdgeInsets.only(left: 25, right: 25, top: 40),
child: Form(
key: fromKey,
child: Column(
children: [
Row(
children: [
TextUtils(
text: 'Sing',
fontSize: 28,
fontWeight: FontWeight.w500,
color: Get.isDarkMode ? Colors.white : pinkClr,
underLine: TextDecoration.none),
const SizedBox(
width: 3,
),
TextUtils(
text: 'Up',
fontSize: 28,
fontWeight: FontWeight.w500,
color: Get.isDarkMode ? Colors.white : pinkClr,
underLine: TextDecoration.none),
],
),
const SizedBox(
height: 50,
),
AuthTextFormField(
controller: namecontroller,
obscureText: false,
validator: (value) {
if (value.toString().length <= 2 ||
!RegExp(validationName).hasMatch(value)) {
return "Enter valid name";
} else {
return null;
}
},
prefixIcon: Get.isDarkMode
? Image.asset('assets/images/user.png')
: Icon(
Icons.person,
color: pinkClr,
size: 30,
),
suffixIcon: const Text(''),
hintText: 'User Name',
),
const SizedBox(
height: 20,
),
AuthTextFormField(
controller: emailcontroller,
obscureText: false,
validator: (value) {
if (!RegExp(validationEmail).hasMatch(value)) {
return "Enter valid email";
} else {
return null;
}
},
prefixIcon: Get.isDarkMode
? Image.asset('assets/images/email.png')
: Icon(
Icons.email,
size: 30,
color: pinkClr,
),
suffixIcon: const Text(''),
hintText: 'Email',
),
const SizedBox(
height: 20,
),
GetBuilder<AuthController>(builder: (_) {
return AuthTextFormField(
controller: passwordcontroller,
obscureText:controller.isVibility? false:true,
validator: (value) {
if (value.toString().length < 6) {
return "enter vaild password";
} else {
return null;
}
},
prefixIcon: Get.isDarkMode
? Image.asset('assets/images/lock.png')
: Icon(
Icons.lock,
size: 30,
color: pinkClr,
),
suffixIcon: IconButton(
onPressed: () {
controller.visibility();
},
icon:controller.isVibility?const Icon(
Icons.visibility_off,
color: Colors.black,
):const Icon(
Icons.visibility,
color: Colors.black,
),
),
hintText: 'Password',
);
}),
const SizedBox(
height: 50,
),
CheckWidget(),
const SizedBox(
height: 50,
),
GetBuilder<AuthController>(builder:(_){
return AuthButtton(
onpressed: () {
if (controller.isCheckBox == false) {
Get.snackbar(
"Check Box",
"Please, Accept terms & conditions",
snackPosition: SnackPosition.BOTTOM,
backgroundColor: Colors.green,
colorText: Colors.white,
);
}else if (fromKey.currentState!.validate()) {
String name = namecontroller.text.trim();
String email = emailcontroller.text.trim();
String password = passwordcontroller.text;
controller.signUpUsingFirebase(
name: name,
email: email,
password: password,
);
controller.isCheckBox = true;
}
},
text: 'SING UP',
);
},
),
],
),
),
),
),
ContainerUnder(
text: 'Already have an Account? ',
onPressed: () {Get.offNamed(Routes.loginScreen);},
textType: "Log in",
),
],
),
),
));
}
}```
Please help with auth erorr when the email is already used ........................
CodePudding user response：
If you aren't, replace MaterialApp with GetMaterialApp in your main.dart or wherever you put it.
CodePudding user response：
its just add borderWidth: 100, to snack bar