Android basic bind a service

MainActivity.java

public class MainActivity extends AppCompatActivity {

    MyService.ServiceBinder mBinderService;
    ServiceConnection mServConn = new ServiceConnection() {
        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {
            mBinderService = (MyService.ServiceBinder) service;
            
            // later call the binder to do something
            mBinderService.someInterface(0);
        }

        @Override
        public void onServiceDisconnected(ComponentName name) {
        }
    };

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

        Intent intent = new Intent(MainActivity.this, MyService.class);
        bindService(intent, mServConn, BIND_AUTO_CREATE);
    }
}

MyService.java

public class MyService extends Service {
    
    public ServiceBinder mBinder = new ServiceBinder();

    public MyService() {
    }

    @Override
    public IBinder onBind(Intent intent) {
        return mBinder;
    }


    public class ServiceBinder extends Binder {
        public void someInterface(int i) {
            // do something, called by client
        }

        public MyService getService() {
            // can also return this service so that client can all its any public method
            return MyService.this;
        }
    }
}