应用内结算：购买后如何查询库存，以获取价格和货币代码？

Question

在Android应用中使用Google应用内结算进行购买后，我试图获取价格和货币代码。

成功购买后，我会在库存中查询相同的SKU，但会得到空值

new IabHelper.OnIabPurchaseFinishedListener() {
    public void onIabPurchaseFinished(IabResult result, Purchase purchase) {
        if (result.isFailure()) {
            return;
        } else if (purchase.getSku().equals(MY_SKU)) {
            if (purchase.getPurchaseState() == 0) {
                try {
                    Inventory inventory = appBillingHelper.queryInventory();
                    price = inventory.getSkuDetails(MY_SKU).getPrice(); // CRASHES WITH A NULL POINTER EXCEPTION for SkuDetails.
                    currencyCode = inventory.getSkuDetails(MY_SKU).getPriceCurrencyCode();

Answer 1

您应该按照此处说明的步骤进行操作https://developer.android.com/training/in-app-billing/purchase-iab-products.html#QueryPurchases