public void addFood(int shopId, String shopName, String image, Food food) {
HashMap<Food, Integer> fs;
if (!foods.containsKey(shopId)) {
fs = new HashMap<Food, Integer>();
foods.put(shopId, fs);
} else {
fs = foods.get(shopId);
}
fs.put(food, food.getBuyCount());
if (shopName != null && !shopNames.containsKey(shopId)) {
shopNames.put(shopId, shopName);
}
if (image != null && !shopImages.containsKey(shopId)) {
shopImages.put(shopId, image);
}
}
