Question

这是实施应用内结算的代码的一部分。我有两个疑问。

@Override
    public void onPurchaseStateChange(PurchaseState purchaseState, String itemId,
           int quantity, long purchaseTime, String developerPayload) {
        if (Consts.DEBUG) {
            Log.i(TAG, "onPurchaseStateChange() itemId: " + itemId + " " + purchaseState);
        }

        if (developerPayload == null) {
            logProductActivity(itemId, purchaseState.toString());
        } else {
            logProductActivity(itemId, purchaseState + "\n\t" + developerPayload);
        }

        if (purchaseState == PurchaseState.PURCHASED) {
            mOwnedItems.add(itemId);

            // At this point I have to put Premium changes
        }
    }

我的问题：

在我说“此时我必须进行高级更改”时，我如何向您保证已购买该应用程序？
据我所知，一旦购买，可能需要几个小时才能生效。我如何确保我的应用程序将执行恰当的代码：“此时我必须进行高级更改”？

Answer 1

如果你到达这个街区

if (purchaseState == PurchaseState.PURCHASED) {
    ...
}

然后您就知道购买成功了。根据我的经验，购买后的延迟时间不会超过几秒钟。但是用户可以在确认之前关闭应用程序。

这也是你应该实现restoreTransactions()的原因。每次活动打开时，都会检查服务器是否已购买应用程序。

/**
 * A {@link PurchaseObserver} is used to get callbacks when Android Market sends
 * messages to this application so that we can update the UI.
 */
private class MyPurchaseObserver extends PurchaseObserver {
    public DownloaderPurchaseObserver(Handler handler) {
        super(home, handler);
    }

    @Override
    public void onBillingSupported(boolean supported) {
        ...
        yourBillingService.restoreTransactions();
        ...
    }

    @Override
    public void onRestoreTransactionsResponse(RestoreTransactions request,
            ResponseCode responseCode) {
        if (responseCode == ResponseCode.RESULT_OK) {
            // repeat your premium validation here
        } else {
            if (Consts.DEBUG) {
                Log.e(TAG, "RestoreTransactions error: " + responseCode);
            }
        }
    }

}

应用内结算实施：已确认购买

1 个答案: