buildScope missed some dirty elements in flutter - flutter

Question

enter image description here
I have error like above picture. what is buildscope. I think it is related with lifecycle. I cannot find where is problem. I think that it doesn't use dispose so it show error. but it is not correct. PincodeTextField widget automatically do dispose. what is problem in my code.
class PinSettingScreen extends StatefulWidget {
const PinSettingScreen({Key? key}) : super(key: key);
#override
State<PinSettingScreen> createState() => _PinSettingScreenState();
}
class _PinSettingScreenState extends State<PinSettingScreen> {
late FlutterSecureStorage _storage;
late MethodChannel _finPongChannel;
late TextEditingController _inputEditingController;
late String _pinNo;
late Map _userData;
late FocusNode _inputPinFocusNode;
bool _isCompleted = false;
#override
void initState() {
super.initState();
_storage = const FlutterSecureStorage();
_inputEditingController = TextEditingController();
_inputPinFocusNode = FocusNode();
_finPongChannel = const MethodChannel("io.codef.finpong");
_finPongChannel.setMethodCallHandler(closeFinPong);
}
#override
void didChangeDependencies() {
super.didChangeDependencies();
_userData = context.currentBeamLocation.data as Map;
}
Future<void> closeFinPong(MethodCall call) async {
if (call.method == "closeFinPong") {
Provider.of<AuthenticationNotifier>(context, listen: false)
.setUserAuth(true);
}
}
Widget _pinInputPage() {
return Center(
child: Padding(
padding: const EdgeInsets.all(20.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text(
"헤이홀더에서 사용할",
style: TextStyle(
color: Colors.black,
fontSize: 20.0.sp,
fontWeight: FontWeight.w500),
),
SizedBox(
height: 5.0.h,
),
Text("비밀번호를 입력해주세요.",
style: TextStyle(
color: Colors.black,
fontSize: 20.0.sp,
fontWeight: FontWeight.w500)),
SizedBox(
height: 30.0.h,
),
PinCodeTextField(
appContext: context,
length: 6,
keyboardType: TextInputType.number,
obscureText: true,
autoFocus: true,
blinkWhenObscuring: true,
focusNode: _inputPinFocusNode,
controller: _inputEditingController,
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.digitsOnly
],
onChanged: (value) {},
pinTheme: PinTheme(
shape: PinCodeFieldShape.box,
borderRadius: BorderRadius.circular(5)),
onCompleted: (value) {
setState(() {
_isCompleted = true;
_pinNo = _inputEditingController.text;
});
_inputEditingController.clear();
FocusScope.of(context).nextFocus();
},
)
],
),
),
);
}
Future<void> _signup() async {
showCircularProgressIndicator(context);
final authNotifier =
Provider.of<AuthenticationNotifier>(context, listen: false);
final fcmToken = await FirebaseMessaging.instance.getToken();
_userData.putIfAbsent("pinNo", () => _pinNo);
_userData.putIfAbsent("deviceId", () => fcmToken);
SignUpModel signUpResult = await AuthService().signUp(_userData);
if (signUpResult.ok!) {
final SharedPreferences pref = await SharedPreferences.getInstance();
await pref.setBool("useLock", true);
await _storage.write(
key: "userId", value: signUpResult.data?.userId.toString());
final userState = signUpResult.data?.userState;
if (userState == "new") {
final codefToken = signUpResult.data?.codefToken;
final arguments = {"codefToken": codefToken, "entry": "0"};
await _finPongChannel.invokeMethod("finpongStart", arguments);
} else {
authNotifier.setUserAuth(true);
}
} else {
//TODO://알수없는 에러 발생.
}
}
Widget _pinCheckPage() {
return Center(
child: Padding(
padding: const EdgeInsets.all(20.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text(
"비밀번호 확인을 위해",
style: TextStyle(
color: Colors.black,
fontSize: 20.0.sp,
fontWeight: FontWeight.w500),
),
SizedBox(
height: 5.0.h,
),
Text(
"다시 한번 입력해주세요.",
style: TextStyle(
color: Colors.black,
fontSize: 20.0.sp,
fontWeight: FontWeight.w500),
),
SizedBox(
height: 30.0.h,
),
PinCodeTextField(
appContext: context,
length: 6,
keyboardType: TextInputType.number,
obscureText: true,
blinkWhenObscuring: true,
onChanged: (value) {},
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.digitsOnly
],
pinTheme: PinTheme(
shape: PinCodeFieldShape.box,
borderRadius: BorderRadius.circular(5)),
validator: (value) {
if (value!.length == 6 && _pinNo != value) {
return "이전 입력 값과 다른 값을 입력하였습니다.";
} else {
return null;
}
},
onCompleted: (value) async {
if (_pinNo == value) {
await _signup();
}
},
)
],
),
),
);
}
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: _isCompleted
? AppBar(
elevation: 0,
backgroundColor: Colors.white,
leadingWidth: 38.0.w,
leading: IconButton(
padding: EdgeInsets.only(left: 15.0.w),
icon: const Icon(
Icons.arrow_back_ios,
color: Colors.black,
),
onPressed: () {
setState(() {
_pinNo = "";
_isCompleted = false;
});
_inputEditingController.clear();
FocusScope.of(context).requestFocus(_inputPinFocusNode);
},
),
)
: null,
body: _isCompleted ? _pinCheckPage() : _pinInputPage());
}
}