Mobile Buy SDK Android - how to add "Add Cart" button with Quanity (Nos)

Question

Mobile Buy SDK Android - how to add "Add Cart" button with Quanity (Nos)

I downloaded the latest version of the Mobile Buy SDK Android from this https://github.com/Shopify/mobile-buy-sdk-android/releases/ , and I successfully completed the sample project by following the following steps https://docs.shopify.com / mobile-buy-sdk / android / integration-guide .

What I've done

When you select a specific product from the list of displayed products, it will go to

ProductDetailsActivityand there is the possibility of a checkoutproduct. therefore, it is currently useful for purchasing a single product.

ProductListActivity.java

listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                @Override
                public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                    if (useProductDetailsActivity) {
                        launchProductDetailsActivity(products.get(position));
                    } else {
                        createCheckout(products.get(position));
                    }
                }
            });

SampleApplication.java

public void launchProductDetailsActivity(Activity activity, Product product, ProductDetailsTheme theme) {
    ProductDetailsBuilder builder = new ProductDetailsBuilder(this, buyClient);
    Intent intent = builder.setShopDomain(buyClient.getShopDomain())
            .setProduct(product)
            .setTheme(theme)
            .setShop(shop)
            .setWebReturnToUrl(getString(R.string.web_return_to_url))
            .setWebReturnToLabel(getString(R.string.web_return_to_label))
            .build();
    activity.startActivityForResult(intent, 1);
}