Custom Toolbar

custommenu.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <item
        android:id="@+id/settings"
        android:icon="@drawable/settings"
        android:iconTint="@color/white"
        android:title="Settings"
        app:showAsAction="ifRoom" />

    <item
        android:id="@+id/search"
        android:icon="@drawable/search"
        android:iconTint="@color/white"
        android:title="Search"
        app:actionViewClass="androidx.appcompat.widget.SearchView"
        app:showAsAction="ifRoom" />

    <item
        android:icon="@drawable/menu"
        android:title="Menu"
        app:showAsAction="always">

        <menu>
            <item
                android:id="@+id/contact"
                android:title="Contact" />

            <item
                android:id="@+id/share"
                android:title="Share" />

            <item
                android:id="@+id/exit"
                android:title="Exit" />
        </menu>
    </item>

</menu>

activity.xml

<androidx.appcompat.widget.Toolbar
    android:id="@+id/toolbar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/primary"
    app:layout_constraintTop_toTopOf="parent"
    app:title="Custom Toolbar"
    app:titleTextColor="@color/white" />

CustomToolbarActivity.java

public class CustomToolbarActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_custom_toolbar);

        Toolbar toolbar = findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
    }

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

    @Override
    public boolean onOptionsItemSelected(@NonNull MenuItem item) {

        int id = item.getItemId();

        if (id == R.id.settings) {
            Toast.makeText(this, "Settings", Toast.LENGTH_SHORT).show();
        } else if (id == R.id.contact) {
            Toast.makeText(this, "Contact", Toast.LENGTH_SHORT).show();
        } else if (id == R.id.share) {
            Toast.makeText(this, "Share", Toast.LENGTH_SHORT).show();
        } else if (id == R.id.exit) {
            Toast.makeText(this, "Exit", Toast.LENGTH_SHORT).show();
        }
        return true;
    }
}