Facebook App - Ecommerce - Android - Java - Purchased Event

/**
 * This function assumes logger is an instance of AppEventsLogger and has been
 * created using AppEventsLogger.newLogger() call.
 */
public void logPurchasedEvent (int numItems, String contentType, String contentId, String currency, double price) {
    Bundle params = new Bundle();
    params.putInt(AppEventsConstants.EVENT_PARAM_NUM_ITEMS, numItems);                  //Number of items. Integer.
    params.putString(AppEventsConstants.EVENT_PARAM_CONTENT_TYPE, contentType);         //'product' or 'product_group'. String.
    params.putString(AppEventsConstants.EVENT_PARAM_CONTENT_ID, contentId);             //product identifier. String.
    params.putString(AppEventsConstants.EVENT_PARAM_CURRENCY, currency);                //ISO 4217 code, e.g., "EUR", "RSD"..string.
    logger.logPurchase(price, Currency.getInstance(currency),params);
}