Navigation Drawer

strings.xml

<string name="Open_navigation_drawer">Open Navigation Drawer</string>
<string name="Close_navigation_drawer">Close Navigation Drawer</string>

sidemenu.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <group
        android:id="@+id/Category1"
        android:checkableBehavior="single">

        <item
            android:id="@+id/home"
            android:icon="@drawable/home"
            android:title="Home" />

        <item
            android:id="@+id/setting"
            android:icon="@drawable/settings"
            android:title="Setting" />

        <item
            android:id="@+id/about"
            android:icon="@drawable/info"
            android:title="About" />

        <item
            android:id="@+id/category2"
            android:title="Other">

            <menu>
                <item
                    android:id="@+id/fav"
                    android:icon="@drawable/favorite"
                    android:title="Favourite" />

                <item
                    android:id="@+id/item2"
                    android:icon="@drawable/emoji"
                    android:title="Item1" />

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

            </menu>
        </item>
    </group>
</menu>

Activity_navigation.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.drawerlayout.widget.DrawerLayout 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:id="@+id/drawerLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:openDrawer="start"
    tools:context=".NavigationActivity">

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

        <androidx.appcompat.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:background="@color/primary"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
        app:title="Navigation Drawer"
        tools:ignore="MissingConstraints" />

    </androidx.constraintlayout.widget.ConstraintLayout>

    <com.google.android.material.navigation.NavigationView
        android:id="@+id/navigationView"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:theme="@style/navigationTheme"
        app:headerLayout="@layout/header"
        app:menu="@menu/sidemenu"/>

</androidx.drawerlayout.widget.DrawerLayout>

NavigationActivity.java

public class NavigationActivity extends AppCompatActivity {
    DrawerLayout drawerLayout;
    Toolbar toolbar;
    NavigationView navigationView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_navigation);

        //Define IDs
        drawerLayout = findViewById(R.id.drawerLayout);
        navigationView = findViewById(R.id.navigationView);
        toolbar = findViewById(R.id.toolbar);

        setSupportActionBar(toolbar);

        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this, drawerLayout, toolbar, R.string.Open_navigation_drawer, R.string.Close_navigation_drawer);
        drawerLayout.addDrawerListener(toggle);
        toggle.syncState();

        navigationView.setCheckedItem(R.id.home);

        navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
            @Override
            public boolean onNavigationItemSelected(@NonNull MenuItem item) {

                int id = item.getItemId();

                if (id == R.id.home) {
                    Intent intent = new Intent(NavigationActivity.this, NavigationActivity.class);
                    startActivity(intent);

                } else if (id == R.id.setting) {
                    Toast.makeText(NavigationActivity.this, "Setting", Toast.LENGTH_SHORT).show();

                } else if (id == R.id.about) {
                    Toast.makeText(NavigationActivity.this, "About", Toast.LENGTH_SHORT).show();

                } else if (id == R.id.fav) {
                    Toast.makeText(NavigationActivity.this, "Favourite", Toast.LENGTH_SHORT).show();

                } else if (id == R.id.item1) {
                    Toast.makeText(NavigationActivity.this, "Item1", Toast.LENGTH_SHORT).show();

                } else {
                    finishAffinity();
                }

                drawerLayout.closeDrawer(GravityCompat.START);
                return true;
            }
        });

    }

    @Override
    public void onBackPressed() {
        if(drawerLayout.isDrawerOpen(GravityCompat.START)){
            drawerLayout.closeDrawer(GravityCompat.START);
        } else{
            super.onBackPressed();
        }
    }
    
}