为什么我的工具栏菜单没有显示在Fragment的工具栏中？

Question

我的Android Studio项目中有问题。 我有不同的片段，在那些片段中，我需要在“片段”的工具栏中显示一个菜单，但是找不到找到显示该片段的方法。 我什至看过太多教程并遵循它们的代码，但仍然无法正常工作。

这是“我的活动”代码：

public class HomeActivity extends AppCompatActivity {
public static
Toolbar toolBar;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_home);
    BottomNavigationView bottomnav = findViewById(R.id.HomeNavigation);
    bottomnav.setOnNavigationItemSelectedListener(navListener);

    Toolbar TB = (Toolbar)findViewById(R.id.toolBar);
    setSupportActionBar(TB);
}

 @Override
 public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.home_toolbaritems, menu);
    return true;
 }

private BottomNavigationView.OnNavigationItemSelectedListener navListener 
= new BottomNavigationView.OnNavigationItemSelectedListener()
{
@Override
public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {
    Fragment selectedFragment = null;
    switch (menuItem.getItemId())
    {
        case R.id.navhome:
            selectedFragment = new HomeFragment();

            break;
        case R.id.navanalysis:
            selectedFragment = new AnalysisFragment();
            break;
        case R.id.navbinnacle:
            selectedFragment = new BinnacleFragment();
            break;
        case R.id.navsettings:
            selectedFragment = new SettingsFragment();
            break;
    }


 getSupportFragmentManager().beginTransaction().replace(R.id.fragmentcontainer 
   , selectedFragment).commit();
        return true;
     }
    };

这是我的活动的布局代码：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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=".HomeActivity">

    <RelativeLayout
        android:id="@+id/fragmentcontainer"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_above="@+id/HomeNavigation"
        android:layout_marginBottom="-56dp">

    </RelativeLayout>
    <android.support.design.widget.BottomNavigationView
        android:id="@+id/HomeNavigation"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:background="?android:attr/windowBackground"
        app:menu="@menu/home_bottomnavigation">

    </android.support.design.widget.BottomNavigationView>
</RelativeLayout>
This is my Fragment's code:

    public class HomeFragment extends Fragment {
    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
       setHasOptionsMenu(true);
        return inflater.inflate(R.layout.homefragment, container, false);
    }

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setHasOptionsMenu(true);

    }

    @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater)
    {
        super.onCreateOptionsMenu(menu, inflater);
        menu.clear();
        inflater.inflate(R.menu.home_toolbaritems, menu);

    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onActivityCreated(savedInstanceState);
        setHasOptionsMenu(true);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {

        switch(item.getItemId())
        {
            case R.id.NewItem:
                //New Button in toolbar has been clicked
                OpenNewDialog();
                break;
            case R.id.SelectItem:
                //Select button in toolbar has been clicked

                break;

            case R.id.ImportItemHome:
                //Select button in toolbar has been clicked

                break;

        }
        return super.onOptionsItemSelected(item);
    }

    public void OpenNewDialog() {
        NewDialogClass newdialog = new NewDialogClass();
        newdialog.show(getChildFragmentManager(), "New Dialog");

     }


    }

这是我的片段的布局代码：

    <?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout 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">

    <include layout="@layout/mytoolbar_layout" />

    <android.support.v7.widget.CardView
        android:layout_width="309dp"
        android:layout_height="355dp"
        android:layout_alignParentStart="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentEnd="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentBottom="true"
        android:layout_marginStart="44dp"
        android:layout_marginLeft="44dp"
        android:layout_marginTop="200dp"
        android:layout_marginEnd="44dp"
        android:layout_marginRight="44dp"
        android:layout_marginBottom="110dp"
        app:cardCornerRadius="40dp"
        app:cardElevation="40dp"
        app:cardMaxElevation="40dp"
        tools:cardBackgroundColor="@color/Greyish" />

</RelativeLayout>