Android androidx.SearchView is not working

Question

I have implemented SearchView in MaterialToolBar in my project. Everything working fine except for the final step. When I type anything in the search bar and click on the keyboard find button, it doesn't show anything. Please help.

Video of my problem https://drive.google.com/file/d/1GpE16D3drLGYp0ZetHgNlT8s7qZSFuWk/view?usp=drivesdk

Menu.xml

    <item
    android:id="@+id/menu_search"
    android:title="@string/search"
    android:icon="@drawable/ic_search"
    app:showAsAction="always|collapseActionView"
    app:actionViewClass="androidx.appcompat.widget.SearchView" />

activity.xml

<com.google.android.material.appbar.MaterialToolbar
    android:id="@+id/category1_toolbar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:paddingEnd="10dp"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent"
    android:background="@color/dark_blue"
    app:menu="@menu/cart_share"
    tools:ignore="RtlSymmetry">

    <ImageView
        android:id="@+id/img_back_all_category"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:contentDescription="TODO"
        android:src="@drawable/ic_keyboard_arrow_left" />

    <TextView
        android:id="@+id/tv_all_categories"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:text="@string/product_name"
        android:fontFamily="@font/montserrat"
        android:textStyle="bold"
        android:textSize="20sp"
        android:textColor="@color/white"
        android:layout_marginStart="25sp"/>
</com.google.android.material.appbar.MaterialToolbar>

java code

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.cart_search_menu, menu);
    MenuItem menuItem = menu.findItem(R.id.menu_search);
    SearchView searchView = (SearchView) menuItem.getActionView();
    searchView.setQueryHint("Type here to search");
    searchView.setMaxWidth(android.R.attr.width);

    searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
        @Override
        public boolean onQueryTextSubmit(String query) {
            //getSearchResults(query); Also tried
            getSearchResults(searchView.getQuery().toString());
            if( ! searchView.isIconified()) {
                searchView.setIconified(true);
            }
            menuItem.collapseActionView();
            return false;
        }

        @Override
        public boolean onQueryTextChange(String newText) {
            return false;
        }
    });

    return super.onCreateOptionsMenu(menu);
}

Answer 1

I changed the sequence of code lines after that it worked fine.

Before:

super.onCreate(savedInstanceState);
Toolbar toolbar = findViewById(R.id.category1_toolbar);
setSupportActionBar(toolbar);
setContentView(R.layout.activity_product_list);

After:

super.onCreate(savedInstanceState);
setContentView(R.layout.activity_product_list);
Toolbar toolbar = findViewById(R.id.category1_toolbar);
setSupportActionBar(toolbar);