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 [enter image description here][1] enter code here  import android.content.Intent;  import android.os.Bundle;  import android.view.LayoutInflater;  import android.view.MenuItem;  import android.view.View;  import android.view.Menu;  import android.view.ViewGroup;  import android.widget.RelativeLayout;  import android.widget.TextView;    import androidx.appcompat.widget.Toolbar;    import com.example.shopingonline.Model.Products;  import com.example.shopingonline.Model.Users;  import com.example.shopingonline.Prevalent.Prevalent;  import com.example.shopingonline.ViewHolder.ProductViewHolder;  import com.firebase.ui.database.FirebaseRecyclerAdapter;  import com.firebase.ui.database.FirebaseRecyclerOptions;  import com.google.android.material.snackbar.Snackbar;  import com.google.android.material.navigation.NavigationView;    import androidx.annotation.NonNull;  import androidx.appcompat.app.ActionBarDrawerToggle;  import androidx.core.view.GravityCompat;  import androidx.customview.widget.Openable;  import androidx.navigation.NavController;  import androidx.navigation.Navigation;  import androidx.navigation.ui.AppBarConfiguration;  import androidx.navigation.ui.NavigationUI;  import androidx.drawerlayout.widget.DrawerLayout;  import androidx.appcompat.app.AppCompatActivity;  import androidx.recyclerview.widget.LinearLayoutManager;  import androidx.recyclerview.widget.RecyclerView;    import com.example.shopingonline.databinding.ActivityHomeBinding;  import com.google.android.material.floatingactionbutton.FloatingActionButton;  import com.google.firebase.database.DatabaseReference;  import com.google.firebase.database.FirebaseDatabase;  import com.squareup.picasso.Picasso;    import de.hdodenhof.circleimageview.CircleImageView;  import io.paperdb.Paper;    public class HomeActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {      private AppBarConfiguration mAppBarConfiguration;    private DatabaseReference ProductsRef;  private RecyclerView recyclerView;  RecyclerView.LayoutManager layoutManager;      @Override  protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.activity_home);    ProductsRef = FirebaseDatabase.getInstance().getReference().child("Products");        Paper.init(this);  Toolbar toolbar = findViewById(R.id.toolbar);  toolbar.setTitle("Home");  setSupportActionBar(toolbar);    FloatingActionButton fab = findViewById(R.id.fab);  fab.setOnClickListener(new View.OnClickListener() {  @Override  public void onClick(View view) {  Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)  .setAction("Action", null).show();  }  });    DrawerLayout drawer = findViewById(R.id.drawer_layout);      NavigationView navigationView = findViewById(R.id.nav_view);    View headerView = navigationView.getHeaderView(0);  TextView userNameTextView = headerView.findViewById(R.id.user_profile_name);  CircleImageView profileImageView = headerView.findViewById(R.id.user_profile_image);  userNameTextView.setText(Prevalent.currentOnlineUser.getName());        // Passing each menu ID as a set of Ids because each  // menu should be considered as top level destinations.  mAppBarConfiguration = new AppBarConfiguration.Builder(  R.id.nav_cart, R.id.nav_categories, R.id.nav_logout,R.id.nav_settings, R.id.nav_orders, R.id.nav_home)  .setOpenableLayout(drawer)  .build();  //NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_container);  //NavigationUI.setupActionBarWithNavController(this, navController, mAppBarConfiguration);  // NavigationUI.setupWithNavController(navigationView, navController);    recyclerView = findViewById(R.id.recycler_menu);  recyclerView.setHasFixedSize(true);  layoutManager = new LinearLayoutManager(this);  recyclerView.setLayoutManager(layoutManager);  }      @Override  protected void onStart() {  super.onStart();    FirebaseRecyclerOptionslt;Productsgt; options =  new FirebaseRecyclerOptions.Builderlt;Productsgt;()  .setQuery(ProductsRef,Products.class)  .build();    FirebaseRecyclerAdapterlt;Products, ProductViewHoldergt; adapter =  new FirebaseRecyclerAdapterlt;Products, ProductViewHoldergt;(options) {  @Override  protected void onBindViewHolder(@NonNull ProductViewHolder holder, int position, @NonNull Products model) {    holder.txtProductName.setText(model.getPname());  holder.txtProductDescription.setText(model.getDescription());  holder.txtProductPrice.setText("Price = "  model.getPrice());  Picasso.get().load(model.getImage()).into(holder.imageView);      }    @NonNull  @Override  public ProductViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {  View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.product_items_layout, parent, false);  ProductViewHolder holder = new ProductViewHolder(v);  return holder;  }  };  recyclerView.setAdapter(adapter);  adapter.startListening();    }    @Override  public boolean onCreateOptionsMenu(Menu menu) {  // Inflate the menu; this adds items to the action bar if it is present.  getMenuInflater().inflate(R.menu.home, menu);  return true;  }    // @Override  //public boolean onSupportNavigateUp() {  //NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_container);  // return NavigationUI.navigateUp(navController, mAppBarConfiguration)  // || super.onSupportNavigateUp();  // }    @Override  public boolean onOptionsItemSelected(MenuItem item){  int id = item.getItemId();          return super.onOptionsItemSelected(item);  }    @SuppressWarnings("StatementWithEmptyBody")    @Override  public boolean onNavigationItemSelected(MenuItem item) {  int id = item.getItemId();  if (id == R.id.nav_cart) {    } else if (id == R.id.nav_orders) {    } else if (id == R.id.nav_categories) {  } else if (id == R.id.nav_settings) {  Intent intent = new Intent(HomeActivity.this,settinsActivity.class);  startActivity(intent);  } else if (id == R.id.nav_logout) {  Paper.book().destroy();    Intent intent = new Intent(HomeActivity.this,MainActivity.class);  intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);  startActivity(intent);  finish();  }    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);  drawer.closeDrawer(GravityCompat.START);  return true;  }    }      enter code here    lt;?xml version="1.0" encoding="utf-8"?gt;  lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"  package="com.example.shopingonline"gt;    lt;application  android:allowBackup="true"  android:icon="@mipmap/ic_launcher"  android:label="@string/app_name"  android:roundIcon="@mipmap/ic_launcher_round"  android:supportsRtl="true"  android:theme="@style/Theme.ShopingOnline"gt;  lt;activity  android:name=".settinsActivity"  android:exported="false" /gt;  lt;activity  android:name=".HomeActivity"  android:exported="false"  android:label="@string/title_activity_home"  android:theme="@style/Theme.ShopingOnline.NoActionBar" /gt;  lt;activity  android:name=".AdminCategoryActivity"  android:exported="false" /gt;  lt;activity  android:name=".AdminAddNewProductActivity"  android:exported="false" /gt;  lt;activity  android:name=".RegisterActivity"  android:exported="false" /gt;  lt;activity  android:name=".LoginActivity"  android:exported="false" /gt;  lt;activity  android:name=".MainActivity"  android:exported="true"gt;  lt;intent-filtergt;  lt;action android:name="android.intent.action.MAIN" /gt;    lt;category android:name="android.intent.category.LAUNCHER" /gt;  lt;/intent-filtergt;  lt;/activitygt;  lt;/applicationgt;    lt;/manifestgt;    enter code here    lt;?xml version="1.0" encoding="utf-8"?gt;  lt;menu xmlns:android="http://schemas.android.com/apk/res/android"  xmlns:tools="http://schemas.android.com/tools"  tools:showIn="navigation_view"gt;    lt;group android:checkableBehavior="single"gt;  lt;item  android:id="@ id/nav_cart"  android:icon="@drawable/ic_cart"  android:title="Import"  android:iconTint="@android:color/white"/gt;  lt;item  android:id="@ id/nav_orders"  android:icon="@drawable/ic_orders"  android:title="Orders"  android:iconTint="@android:color/white"/gt;  lt;item  android:id="@ id/nav_categories"  android:icon="@drawable/ic_category"  android:title="Categories"  android:iconTint="@android:color/white"/gt;  lt;item  android:id="@ id/nav_settings"  android:icon="@drawable/ic_settings"  android:title="Settings"  android:iconTint="@android:color/white"/gt;  lt;item  android:id="@ id/nav_logout"  android:icon="@drawable/ic_logout"## Heading ##  android:title="Logout"  android:iconTint="@android:color/white"/gt;  lt;/groupgt;  lt;/menugt;   this is the image and the code of the HomeActivity.java actually i'm doing a tutorial and i found some difficult because of the new version of android studio i add an Intent as you see in the onNavigationItemSelected(MenuItem item) methode to go to another activity but it doesn't work when i click in the button of the bar like logout or settings can you help me to found the problem please Thanks    [1]: https://i.stack.imgur.com/27k0L.png  

это изображение и код HomeActivity.java на самом деле я делаю учебник, и я обнаружил некоторые трудности из-за новой версии Android studio. Я добавляю намерение, как вы видите в методе onNavigationItemSelected(элемент меню), чтобы перейти к другому действию, но оно не работает, когда я нажимаю кнопку на панели, например, выход из системы или настройки. можете ли вы помочь мне найти проблему, пожалуйста, спасибо