问App正在使用GetX状态管理重新启动注销。正常登录，但当重声明时，应用程序会失去状态。

EN

import 'package:definer_lms/views/views.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:firebase_core/firebase_core.dart';
import 'package:flutter/cupertino.dart';
import 'package:get/get.dart';
import 'package:flutter/material.dart';

class AuthController extends GetxController {
 static AuthController instance = Get.find();
 late Rx<User?> _user;
  FirebaseAuth auth = FirebaseAuth.instance;

  @override
 void onReady() {
 super.onReady();
 _user = Rx<User?>(auth.currentUser);
 _user.bindStream(auth.userChanges());
 ever(_user, _initialScreen);
 }

 _initialScreen(User? user) {
 if (user == null) {
  print("loging Page");
  Get.offAll(() => const LandingPage());
  } else {
  Get.offAll(() => const HomePage());
  }
  }

   void signup(String email, password) async {
  try {
  await auth.createUserWithEmailAndPassword(
      email: email, password: password);
  } catch (e) {
  Get.snackbar(
    "About User",
    "User Message",
    backgroundColor: Colors.redAccent,
    snackPosition: SnackPosition.BOTTOM,
    titleText: const Text(
      "Account creation failed",
      style: TextStyle(color: Colors.white),
    ),
    messageText: Text(
      e.toString(),
      style: const TextStyle(color: Colors.white),
    ),
    );
    }
    }

    void signIn(String email, password) async {
  try {
   await auth.signInWithEmailAndPassword(email: email, password: password);
   } catch (e) {
    Get.snackbar(
    "About Login",
    "Login Message",
    backgroundColor: Colors.redAccent,
    snackPosition: SnackPosition.BOTTOM,
    titleText: const Text(
      "Account login failed",
      style: TextStyle(color: Colors.white),
    ),
    messageText: Text(
      e.toString(),
      style: const TextStyle(color: Colors.white),
    ),
    );
   }
   }

 void logOut() async {
 await auth.signOut();
 }
 }

import 'dart:async';
import 'package:definer_lms/views/views.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';


class SplashScreen extends StatefulWidget {
const SplashScreen({Key? key}) : super(key: key);

 @override
_SplashScreenState createState() => _SplashScreenState();
 }

 class _SplashScreenState extends State<SplashScreen> {
 @override
void initState() {
Timer(
    Duration(seconds: 3),
    () => {
          Get.off(LandingPage(), transition: Transition.rightToLeftWithFade)
        });

  super.initState();
 }

  @override
  Widget build(BuildContext context) {
  return Scaffold(
  backgroundColor: const Color(0xff2AA8A1),
  body: Center(
    child: Column(
      mainAxisAlignment: MainAxisAlignment.center,
      crossAxisAlignment: CrossAxisAlignment.center,
      children: [
        SizedBox(
          height: 200,
          width: 200,
          child: Image.asset('images/dlw.png'),
        ),
        const Padding(
          padding: EdgeInsets.only(top: 100),
          child: CircularProgressIndicator(
            backgroundColor: Color(0xff2AA8A1),
            color: Colors.white,
          ),
        )
      ],
    ),
  ),
);
}
}

import 'dart:async';

import 'package:flutter/material.dart';
import 'views.dart';
import 'package:get/get.dart';

class LandingPage extends StatefulWidget {
const LandingPage({Key? key}) : super(key: key);

@override
 _LandingPageState createState() => _LandingPageState();
}

class _LandingPageState extends State<LandingPage> {



 @override
 Widget build(BuildContext context) {
  return Scaffold(

  body: Container(
    child: Center(
      child: SizedBox(
        height: 300,
        width: 300,
        child: Image.asset('images/definerLogo.gif'),
      ),
    ),

  ),
  bottomNavigationBar: BottomAppBar(
    color: Colors.blueAccent,
    child: Row(
      mainAxisAlignment: MainAxisAlignment.spaceEvenly,
      children: [
        MaterialButton(
          onPressed: (){
            print('Bottom Button Pressed');

          },
          child: Text('Browse', style: TextStyle(color: Colors.grey.shade300, fontSize: 20.0),),
        ),
        MaterialButton(
          onPressed: (){
            Get.to(SignIn());

          },
          child: Text('Sign In', style: TextStyle(color: Colors.grey.shade300, fontSize: 20.0),),
        )
      ],
    ),
  ),
);
}
}

import 'package:definer_lms/controllers/authController.dart';
import 'package:flutter/material.dart';

class HomePage extends StatelessWidget {
const HomePage({Key? key}) : super(key: key);

@override
Widget build(BuildContext context) {
return Scaffold(
  body: Center(
    child: Column(
      mainAxisAlignment: MainAxisAlignment.center,
      children: [
        ElevatedButton(onPressed: ()=> AuthController.instance.logOut(), child: Text('Logout'))

      ],
    ),
  ),
);
}
}

[GETX] GOING TO ROUTE /SignIn
I/FirebaseAuth( 6676): [FirebaseAuth:] Preparing to create service connection to 
fallback implementation
W/System  ( 6676): Ignoring header X-Firebase-Locale because its value was null.
W/System  ( 6676): Ignoring header X-Firebase-Locale because its value was null.
D/FirebaseAuth( 6676): Notifying id token listeners about user ( 
lpbfNUpaEIQ9s38FtWmaGTfmFjo1 ).
[GETX] GOING TO ROUTE /HomePage
[GETX] REMOVING ROUTE /SignIn
[GETX] REMOVING ROUTE /LandingPage

Performing hot restart...
Syncing files to device Android SDK built for x86...
Restarted application in 932ms.
W/DynamiteModule( 6676): Local module descriptor class for 
com.google.android.gms.providerinstaller.dynamite not found.
I/DynamiteModule( 6676): Considering local module 
com.google.android.gms.providerinstaller.dynamite:0 and remote module 
com.google.android.gms.providerinstaller.dynamite:0
W/ProviderInstaller( 6676): Failed to load providerinstaller module: No acceptable module com.google.android.gms.providerinstaller.dynamite found. Local version is 0 and remote version is 0.
W/ProviderInstaller( 6676): Failed to report request stats: 
com.google.android.gms.common.security.ProviderInstallerImpl.reportRequestStats [class 
android.content.Context, long, long]
W/ConnectivityManager.CallbackHandler( 6676): callback not found for CALLBACK_AVAILABLE 
message
[GETX] Instance "AuthController" has been created
[GETX] Instance "AuthController" has been initialized
[GETX] Instance "GetMaterialController" has been created
[GETX] Instance "GetMaterialController" has been initialized
[GETX] GOING TO ROUTE /HomePage
[GETX] REMOVING ROUTE /
W/libc    ( 6676): calloc(434055556, 1) failed: returning null pointer

======== Exception caught by image resource service ================================================
The following _Exception was thrown resolving an image frame:
Exception: Codec failed to produce an image, possibly due to invalid image data.

When the exception was thrown, this was the stack: 
Image provider: AssetImage(bundle: null, name: "images/dlw.png")
Image key: AssetBundleImageKey(bundle: PlatformAssetBundle#55b5e(), name: "images/dlw.png", scale: 1.0)



=============================================================================
[GETX] WARNING, consider using: "Get.off(() => Page())" instead of "Get.off(Page())".
Using a widget function instead of a widget fully guarantees that the widget and its 
controllers will be removed from memory when they are no longer used.
  
[GETX] REPLACE ROUTE /HomePage
[GETX] NEW ROUTE /LandingPage