How To Setup Toolbar on Activity

Java Class or Fragment

        /*=============== Toolbar Section =====================*/

        MaterialToolbar toolbar = findViewById(R.id.materialToolbar);
        setSupportActionBar(toolbar);

        ActionBar actionBar = getSupportActionBar();
        if (actionBar != null) {
            actionBar.setDisplayHomeAsUpEnabled(true);
            actionBar.setTitle(R.string.bus);
            actionBar.setHomeAsUpIndicator(R.drawable.back_arrow); // Set custom drawable
        }

        toolbar.setNavigationOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                onBackPressed(); // Handle back button click event
            }
        });