andriod-fb-sdk-flikshop.java

/**
 * logger is an instance of AppEventsLogger and has been
 * created using AppEventsLogger.newLogger() call.
 * purchaseAmount is BigDecimal, e.g. BigDecimal.valueOf(4.32).
 * currency is Currency, e.g. Currency.getInstance("USD"),
 *     where the string is from http://en.wikipedia.org/wiki/ISO_4217.
 * parameters is Bundle.
 */
logger.logPurchase(purchaseAmount, 'USD', {
  contents: itemsArray, // Same array as firebase
  num_items: 1,
  content_type: "product"
});