Add a popup window to fragment

Question

I want to add a popup window in this fragment but I don't know how, any help?

public class Info extends Fragment {

    public Info() {
        // Required empty public constructor
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.kaynaklar_info, container, false);
    }

}

Answer 1

PopupDialog dialog = new PopupDialog(getActivity());