有什么方法可以让定制的DialogFragment可取消吗？

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
    builder.setTitle("Dialog Title")
            .setMessage("Dialog Message")
            .setCancelable(true); // 设置对话框可取消
    return builder.create();
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_dialog, container, false);
    getDialog().setCancelable(true); // 设置对话框可取消
    return view;
}