setOnItemClickListener is not working

[itsmeJithin]

Main activity contains below code

   ProductRegistrationDetails productRegistrationDetails = new ProductRegistrationDetails();
            productRegistrationDetails.setActiveRegistrationFound(isActiveRegistrationFound);
            productRegistrationDetails.setNumberOfFreebies(numberOfFreebies);
            productRegistrationDetails.setNumberOfRegistrationBasedAdsPerMonth(numberOfRegistrationBasedAdsPerMonth);
            productRegistrationDetails.setRemainingProduct(remainingProduct);
            productRegistrationDetails.setTrialEnabled(isTrialEnabled);
            productRegistrationDetails.setTrialExpired(isTrialExpired);
            productRegistrationDetails.setUpgradedPackageIsUsing(isUpgradedPackageIsUsing);
            ProductRegistrationAdapter adapter = new ProductRegistrationAdapter(context, productRegistrationDetails);

DialogPlus dialogPlus = DialogPlus.newDialog(this)
                    .setAdapter(adapter)
                    .setContentHolder(new ListHolder())
                    .setExpanded(true)
                    .setCancelable(true)
                    .setContentHeight(ViewGroup.LayoutParams.WRAP_CONTENT)
                    .setOnItemClickListener(new OnItemClickListener() {
                        @Override
                        public void onItemClick(DialogPlus dialog, Object item, View view, int position) {
                            CustomSnackBar snackBar = new CustomSnackBar(context, view, "this is test",
                                    Snackbar.LENGTH_LONG, CustomSnackBar.INFO);
                            snackBar.show();
                        }
                    })
                    .create();
            dialogPlus.show();

My Adapter Class

public class ProductRegistrationAdapter extends BaseAdapter {

    private static final String TAG = ProductRegistrationAdapter.class.getSimpleName();
    private Context mContext;

    private ProductRegistrationDetails productRegistrationDetails;

    public ProductRegistrationAdapter(@NonNull Context context, ProductRegistrationDetails details) {
        this.mContext = context;
        productRegistrationDetails = details;
    }

    @Override
    public int getCount() {
        return 1;
    }

    @Override
    public Object getItem(int i) {
        return i;
    }

    @Override
    public long getItemId(int i) {
        return i;
    }

    @Override
    public View getView(final int i, View view, ViewGroup viewGroup) {
        ProductRegistrationAdapter.ViewHolder holder;
        if (view == null) {
            LayoutInflater inflater = (LayoutInflater) mContext
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            view = inflater.inflate(R.layout.registration_dialog, viewGroup, false);
            holder = new ProductRegistrationAdapter.ViewHolder();
            holder.registerNow = (Button) view.findViewById(R.id.register_now);
            holder.info = (TextView) view.findViewById(R.id.dialog_info);
            view.setTag(holder);

        } else {
            holder = (ProductRegistrationAdapter.ViewHolder) view.getTag();
        }
        return view;

    }

    private static class ViewHolder {
        TextView info;
        TextView Id;
        Button registerNow;
    }
}