예제 #1
0
  /** Verifies the developer payload of a purchase. */
  boolean verifyDeveloperPayload(Purchase p) {
    String payload = p.getDeveloperPayload();

    /*
     * TODO: verify that the developer payload of the purchase is correct. It will be
     * the same one that you sent when initiating the purchase.
     *
     * WARNING: Locally generating a random string when starting a purchase and
     * verifying it here might seem like a good approach, but this will fail in the
     * case where the user purchases an item on one device and then uses your app on
     * a different device, because on the other device you will not have access to the
     * random string you originally generated.
     *
     * So a good developer payload has these characteristics:
     *
     * 1. If two different users purchase an item, the payload is different between them,
     *    so that one user's purchase can't be replayed to another user.
     *
     * 2. The payload must be such that you can verify it even when the app wasn't the
     *    one who initiated the purchase flow (so that items purchased by the user on
     *    one device work on other devices owned by the user).
     *
     * Using your own server to store and verify developer payloads across app
     * installations is recommended.
     */

    return true;
  }
예제 #2
0
        public void onIabPurchaseFinished(IabResult result, Purchase purchase) {
          Log.d(TAG, "Purchase finished: " + result + ", purchase: " + purchase);
          if (result.isFailure()) {
            complain("Error purchasing: " + result);
            setWaitScreen(false);
            return;
          }
          if (!verifyDeveloperPayload(purchase)) {
            complain("Error purchasing. Authenticity verification failed.");
            setWaitScreen(false);
            return;
          }

          Log.d(TAG, "Purchase successful.");

          if (purchase.getSku().equals(SKU_GAS)) {
            // bought 1/4 tank of gas. So consume it.
            Log.d(TAG, "Purchase is gas. Starting gas consumption.");
            mHelper.consumeAsync(purchase, mConsumeFinishedListener);
          } else if (purchase.getSku().equals(SKU_PREMIUM)) {
            // bought the premium upgrade!
            Log.d(TAG, "Purchase is premium upgrade. Congratulating user.");
            alert("Thank you for upgrading to premium!");
            mIsPremium = true;
            updateUi();
            setWaitScreen(false);
          } else if (purchase.getSku().equals(SKU_INFINITE_GAS)) {
            // bought the infinite gas subscription
            Log.d(TAG, "Infinite gas subscription purchased.");
            alert("Thank you for subscribing to infinite gas!");
            mSubscribedToInfiniteGas = true;
            mTank = TANK_MAX;
            updateUi();
            setWaitScreen(false);
          }
        }