在使用具有不同菜单的导航抽屉和底部导航栏时出现问题

Question

两者都使用过的Java类。

import android.content.Intent;
import android.os.Bundle;
import android.view.MenuItem;


import androidx.annotation.NonNull;

import androidx.appcompat.app.AppCompatActivity;
import androidx.core.view.GravityCompat;
import androidx.drawerlayout.widget.DrawerLayout;

import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentTransaction;
import androidx.navigation.NavController;
import androidx.navigation.Navigation;
import androidx.navigation.ui.AppBarConfiguration;
import androidx.navigation.ui.NavigationUI;

import com.google.android.material.bottomnavigation.BottomNavigationView;
import com.google.android.material.navigation.NavigationView;

public class NavigActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener{

    private DrawerLayout drawerLayout;
    private NavigationView navigationView;
    private BottomNavigationView bottomNavigationView;
    private NavController navController;
    private AppBarConfiguration appBarConfiguration;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_navig);

        drawerLayout = findViewById(R.id.drawer);

        navigationView = findViewById(R.id.navigationView);
        navigationView.setNavigationItemSelectedListener(this);
        bottomNavigationView = findViewById(R.id.bottomNavigationView);
        navController = Navigation.findNavController(this, R.id.nav_host_fragment);

        appBarConfiguration = new AppBarConfiguration.Builder(new int[]{R.id.home, R.id.addNewProduct, R.id.notifications,R.id.user_details,R.id.settings,R.id.help})
                        .setDrawerLayout(drawerLayout)
                        .build();
        NavigationUI.setupActionBarWithNavController(this, navController,appBarConfiguration);
        NavigationUI.setupWithNavController(bottomNavigationView, navController);
        NavigationUI.setupWithNavController(navigationView, navController);
        navigationView.setNavigationItemSelectedListener(this);

    }
    public boolean onOptionsItemSelected(MenuItem item) {
        NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment);
        return NavigationUI.onNavDestinationSelected(item, navController)
                || super.onOptionsItemSelected(item);
    }



    public boolean onSupportNavigateUp(){
        return NavigationUI.navigateUp(navController, appBarConfiguration);
    }
    public void onBackPressed(){
        if(drawerLayout.isDrawerOpen(GravityCompat.START)){
            drawerLayout.closeDrawer(GravityCompat.START);
        }
        else
          super.onBackPressed();

    }


    @Override
    public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {
        Fragment fragment = null;

        int id= menuItem.getItemId();
        if(id == R.id.user_details)
        {
            fragment = new UserFragment();
        }
        if(id == R.id.settings)
        {

        }
        if(id == R.id.help)
        {

        }
        if(id== R.id.logout)
        {
            MainActivity obj = new MainActivity();
           obj.logout();
           startActivity(new Intent(NavigActivity.this, MainActivity.class));
        }

        if(fragment != null)
        {
            FragmentManager fragmentManager = getSupportFragmentManager();
            FragmentTransaction ft = fragmentManager.beginTransaction();
            ft.replace(R.id.content_frame, fragment);
            ft.commit();

        }

        DrawerLayout drawer = (DrawerLayout)findViewById(R.id.drawer);
        drawer.closeDrawer(GravityCompat.START);
            return true;
    }
}

它是布局文件。

<?xml version="1.0" encoding="utf-8"?>
<androidx.drawerlayout.widget.DrawerLayout
    android:id="@+id/drawer"
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".NavigActivity">




    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">


        <fragment
            android:id="@+id/nav_host_fragment"
            android:name="androidx.navigation.fragment.NavHostFragment"
            android:layout_width="0dp"
            android:layout_height="0dp"
            app:defaultNavHost="true"
            app:layout_constraintBottom_toBottomOf="parent"

            app:layout_constraintLeft_toLeftOf="parent"

            app:layout_constraintRight_toRightOf="parent"
            app:layout_constraintTop_toTopOf="parent"

            app:navGraph="@navigation/main" />

        <com.google.android.material.bottomnavigation.BottomNavigationView
            android:background="@color/colorAccent"
            app:itemIconTint="@color/nav"
            app:itemTextColor="@color/nav"
            app:menu="@menu/main"
            android:id="@+id/bottomNavigationView"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent">

        </com.google.android.material.bottomnavigation.BottomNavigationView>
    </androidx.constraintlayout.widget.ConstraintLayout>

    <FrameLayout
        android:id="@+id/content_frame"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />



    <com.google.android.material.navigation.NavigationView
        app:menu="@menu/side_main"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:id="@+id/navigationView"
        android:layout_gravity="start"
        android:fitsSystemWindows="true"
        app:headerLayout="@layout/nav_header_main"
        ></com.google.android.material.navigation.NavigationView>


</androidx.drawerlayout.widget.DrawerLayout>

当我单击用户选项时，它不指向片段的菜单会在主页上显示其功能，然后将其显示在应用程序的每个页面中。 用户片段是

import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;

public class UserFragment extends Fragment {

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_user, null);
    }

    @Override
    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
    }
}

其布局文件为

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="User"
        android:textSize="28dp"
        android:layout_centerInParent="true"
        />

</RelativeLayout>

任何帮助将不胜感激。如果任何人都可以建议在同一应用程序中使用导航抽屉和底部导航的更好方法，那么我将非常感谢他。