InAppPurchase_code9.java

private void isUserBuyStreaming() {
  if (!isCafeInstalled()) {
      Toast.makeText(this, R.string.cafebazaar_isnot_installed_error, Toast.LENGTH_SHORT).show();
      return;
  }

  mHelper.queryInventoryAsync(new IabHelper.QueryInventoryFinishedListener() {
      public void onQueryInventoryFinished(IabResult result, Inventory inventory) {
          if (result.isFailure()) {
              Toast.makeText(DetailActivity.this, R.string.query_inventory_error, Toast.LENGTH_SHORT).show();
              return;
          }
          if (inventory.hasPurchase(SKU_STREAMING)) {
              openPlayer();
          } else {
              buyStreaming();
          }
      }
  });
}