I have problem with communication with fragment with my activity. I don't have idea how communication this 

```
public class MyDreamsFragment extends Fragment {

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case R.id.action_addream:
                // go to Add DreamActvity.class
                return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

```