ondismiss inside fragment

//pada halaman dialog fragment
private DialogInterface.OnDismissListener onDismiss;

@Override
public void onDismiss(DialogInterface dialog) {
        super.onDismiss(dialog);
        if(onDismiss!=null)
            onDismiss.onDismiss(dialog);
}

public void setOnDismissListener(@Nullable DialogInterface.OnDismissListener listener) {
        this.onDismiss = listener;
}

//pada halaman fragment
FragmentManager ft = (getActivity()).getSupportFragmentManager();
UpdatePriceFragment dialog = UpdatePriceFragment.newInstance(data,idPo);
dialog.show(ft, "detail_item");
dialog.setOnDismissListener(d->{
      Toast.makeText(getContext(), "dismiss", Toast.LENGTH_SHORT).show();
});