public class Test extends Fragment{

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if(doIneedEventBus()){
            EventBus.getDefault().register(this);
        }
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        if(doIneedEventBus()){
            EventBus.getDefault().unregister(this);
        }
    }

    protected boolean doIneedEventBus() {
        return true;
    }
}

public class TestChild extends Test {

    @Override
    protected boolean doIneedEventBus() {
        return false;
    }
}

try {
            EventBus.getDefault().register(this);
        } catch (Throwable t){
            t.printStackTrace();
        }