Main Activity Java Code

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);



        DrawerLayout drawerLayout = findViewById(R.id.drawerLayout);
        ImageView menuIcon = findViewById(R.id.menuIcon);
        NavigationView nav_view = findViewById(R.id.nav_view);
        Toolbar toolbar = findViewById(R.id.toolbar);



        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this, drawerLayout, R.string.close, R.string.open);
        drawerLayout.addDrawerListener(toggle);
        toggle.syncState();


        menuIcon.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                drawerLayout.openDrawer(GravityCompat.START);
            }
        });


        // navigation view theke header layout er item gulake get kora hoise
        View headerView = nav_view.getHeaderView(0);

        // drawer layout er item ke poricoi koriye dewa hoiyese
        LinearLayout string = headerView.findViewById(R.id.setting);

        // drawer layout er item gular set Onclick toiri kora hoise

        string.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                drawerLayout.closeDrawers();
                Toast.makeText(MainActivity.this, "Setting Clicked", Toast.LENGTH_SHORT).show();
            }
        });


    } // on create teg end here
}