Houston we don't have a problem

app/src/main/java/ru/myitschool/work/data/UserRepositoryImplementation.java

@@ -1,5 +1,7 @@
 package ru.myitschool.work.data;
 
+import android.util.Log;
+
 import androidx.annotation.NonNull;
 
 import java.util.function.Consumer;

app/src/main/java/ru/myitschool/work/data/dto/QrDto.java

@@ -6,7 +6,7 @@ import com.google.gson.annotations.SerializedName;
 
 public class QrDto {
     @Nullable
-    @SerializedName("code")
+    @SerializedName("value")
     public String code;
 
     public QrDto(@Nullable String code) {

app/src/main/java/ru/myitschool/work/domain/qr/PushQrUseCase.java

@@ -1,5 +1,7 @@
 package ru.myitschool.work.domain.qr;
 
+import android.util.Log;
+
 import androidx.annotation.NonNull;
 
 import java.util.function.Consumer;

app/src/main/java/ru/myitschool/work/ui/profile/UserFragment.java

@@ -3,11 +3,13 @@ package ru.myitschool.work.ui.profile;
 import android.content.Context;
 import android.content.SharedPreferences;
 import android.os.Bundle;
+import android.util.Log;
 import android.view.View;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentResultListener;
 import androidx.lifecycle.ViewModelProvider;
 import androidx.navigation.Navigation;
 
@@ -16,6 +18,7 @@ import com.squareup.picasso.Picasso;
 import ru.myitschool.work.R;
 import ru.myitschool.work.databinding.FragmentUserBinding;
 import ru.myitschool.work.domain.entities.UserEntity;
+import ru.myitschool.work.ui.qr.scan.QrScanDestination;
 import ru.myitschool.work.utils.Utils;
 
 public class UserFragment extends Fragment {
@@ -59,10 +62,8 @@ public class UserFragment extends Fragment {
         }
 
         binding.scan.setOnClickListener(v -> {
-            if (getView() != null) {
                 Navigation.findNavController(getView()).navigate(
-                        R.id.action_userFragment_to_qrResultFragment);
+                        R.id.action_userFragment_to_qrScanFragment);
-            }
         });
 
         binding.logout.setOnClickListener(v -> {
@@ -78,6 +79,16 @@ public class UserFragment extends Fragment {
             }
         });
 
+        getParentFragmentManager().setFragmentResultListener(QrScanDestination.REQUEST_KEY, this, new FragmentResultListener() {
+            @Override
+            public void onFragmentResult(@NonNull String requestKey, @NonNull Bundle result) {
+                Log.d("result1", QrScanDestination.INSTANCE.getDataIfExist(result));
+                getParentFragmentManager().setFragmentResult("requestKey", result);
+                Navigation.findNavController(getView()).navigate(
+                        R.id.action_userFragment_to_qrResultFragment);
+            }
+        });
+
     }
 
 

app/src/main/java/ru/myitschool/work/ui/qr/result/QrResultFragment.java

@@ -31,26 +31,14 @@ public class QrResultFragment extends Fragment {
     @Override
     public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
         super.onViewCreated(view, savedInstanceState);
+        binding = FragmentQrResultBinding.bind(view);
+        viewModel = new ViewModelProvider(this).get(QrResultViewModel.class);
 
-        Log.d("status", String.valueOf(resultQr != null));
+        getParentFragmentManager().setFragmentResultListener("requestKey", this, new FragmentResultListener() {
-
-        if (getView() != null && resultQr == null) {
-            Navigation.findNavController(getView()).navigate(R.id.action_qrResultFragment_to_qrScanFragment);
-            return;
-        }
-
-        getParentFragmentManager().setFragmentResultListener(QrScanDestination.REQUEST_KEY, this, new FragmentResultListener() {
             @Override
             public void onFragmentResult(@NonNull String requestKey, @NonNull Bundle result) {
                 resultQr = QrScanDestination.INSTANCE.getDataIfExist(result);
-            }
-        });
 
-        Log.d("status", String.valueOf(resultQr != null));
-
-        binding = FragmentQrResultBinding.bind(view);
-
-        viewModel = new ViewModelProvider(this).get(QrResultViewModel.class);
                 viewModel.stateLiveData.observe(getViewLifecycleOwner(), state -> {
                     if (state.getErrorMessage() == null && state.isOpened()) {
                         binding.result.setText(R.string.door_opened);
@@ -63,13 +51,14 @@ public class QrResultFragment extends Fragment {
                     }
                 });
 
-        if (getContext() != null) {
                 SharedPreferences sharedPreferences = getContext().getSharedPreferences("login", Context.MODE_PRIVATE);
                 String login = sharedPreferences.getString("login", null);
-            if (login != null && resultQr != null) {
+
+                if (login != null) {
                     viewModel.update(login, resultQr);
                 }
             }
+        });
 
         binding.close.setOnClickListener(v -> {
             if (getView() != null) {

app/src/main/java/ru/myitschool/work/ui/qr/result/QrResultViewModel.java

@@ -10,12 +10,9 @@ import ru.myitschool.work.data.UserRepositoryImplementation;
 import ru.myitschool.work.domain.entities.QrEntity;
 import ru.myitschool.work.domain.entities.Status;
 import ru.myitschool.work.domain.qr.PushQrUseCase;
-import ru.myitschool.work.ui.profile.UserViewModel;
 
 public class QrResultViewModel extends ViewModel {
-    private final MutableLiveData<State> mutableStateLiveData = new MutableLiveData<State>(
+    private final MutableLiveData<State> mutableStateLiveData = new MutableLiveData<State>();
-            new State(null, false)
-    );
     public final LiveData<State> stateLiveData = mutableStateLiveData;
 
     public final PushQrUseCase pushQrUseCase = new PushQrUseCase(
@@ -37,6 +34,7 @@ public class QrResultViewModel extends ViewModel {
 
 
     public class State {
+
         @Nullable
         private final String errorMessage;
         private final boolean isOpened;

app/src/main/res/navigation/nav_graph.xml

@@ -14,14 +14,17 @@
         <action
             android:id="@+id/action_userFragment_to_qrResultFragment"
             app:destination="@id/qrResultFragment" />
+        <action
+            android:id="@+id/action_userFragment_to_qrScanFragment"
+            app:destination="@id/qrScanFragment" />
     </fragment>
     <fragment
         android:id="@+id/qrScanFragment"
         android:name="ru.myitschool.work.ui.qr.scan.QrScanFragment"
         android:label="QrScanFragment" >
         <action
-            android:id="@+id/action_qrScanFragment_to_qrResultFragment"
+            android:id="@+id/action_qrScanFragment_to_userFragment"
-            app:destination="@id/qrResultFragment" />
+            app:destination="@id/userFragment" />
     </fragment>
     <fragment
         android:id="@+id/loginFragment"
@@ -38,8 +41,5 @@
         <action
             android:id="@+id/action_qrResultFragment_to_userFragment"
             app:destination="@id/userFragment" />
-        <action
-            android:id="@+id/action_qrResultFragment_to_qrScanFragment"
-            app:destination="@id/qrScanFragment" />
     </fragment>
 </navigation>