在为 Android 设置新的应用内购买流程时,Google Developer 网站上的示例代码要求使用以下代码段。
https://developer.android.com/google/play/billing/billing_library_overview
if (result.getResponseCode() == BillingResponse.OK && skuDetailsList != null) {
for (SkuDetails skuDetails : skuDetailsList) {
String sku = skuDetails.getSku();
String price = skuDetails.getPrice();
if ("premium_upgrade".equals(sku)) {
premiumUpgradePrice = price;
} else if ("gas".equals(sku)) {
gasPrice = price;
}
}
}
然而,BillingResponse.OK
并不存在。我怎样才能使这项工作?