swift - 访问字典中的数组

Question

我是 IOS 新手，所以这个问题可能是针对新手的。我确切地知道我想做什么，但问题是如何去做。我有字典的 JSON 数据，例如

{
    "restaurants": [
        {
            "id": 1,
            "restaurantName": "Chuks",
            "restaurantPicture": "restaurantImages/benards.jpg",
            "status": "Working",
            "workingDays": "Tuesday to Sunday",
            "workingHours": "3pm to 10pm"
        },
        {
            "id": 3,
            "restaurantName": "Chuks",
            "restaurantPicture": "restaurantImages/benards.jpg",
            "status": "Working",
            "workingDays": "Tuesday to Sunday",
            "workingHours": "3pm to 10pm"
        },
        {
            "id": 4,
            "restaurantName": "Chuks",
            "restaurantPicture": "restaurantImages/benards.jpg",
            "status": "Working",
            "workingDays": "Tuesday to Sunday",
            "workingHours": "3pm to 10pm"
        },
        {
            "id": 5,
            "restaurantName": "Chuks",
            "restaurantPicture": "restaurantImages/benards.jpg",
            "status": "Working",
            "workingDays": "Tuesday to Sunday",
            "workingHours": "3pm to 10pm"
        },
        {
            "id": 6,
            "restaurantName": "Chuks",
            "restaurantPicture": "restaurantImages/benards.jpg",
            "status": "Working",
            "workingDays": "Tuesday to Sunday",
            "workingHours": "3pm to 10pm"
        }
    ]
}

我正在尝试使用此代码访问字典中的数组

override func viewDidLoad() {
    super.viewDidLoad()

    Alamofire.request(URL_GET_DATA).responseJSON { response in

        if let json = response.result.value {

            let RestaurantArray : NSArray = json as! NSArray

            for i in 0..<RestaurantArray.count{

                self.restaurant.append(Restaurant(
                    restaurantPicture: (RestaurantArray[i] as AnyObject).value(forKey: "restaurantPicture") as? String,
                    restaurantName: (RestaurantArray[i] as AnyObject).value(forKey: "restaurantName") as? String,
                    status: (RestaurantArray[i] as AnyObject).value(forKey: "status") as? String
                ))

            }

            self.tableViewRestaurants.reloadData()
        }

    }
    self.tableViewRestaurants.reloadData()
}

我收到此错误

Could not cast value of type '__NSSingleEntryDictionaryI' (0x1032e6e98) to 'NSArray' (0x1032e7f28).
2018-04-16 11:58:29.020876+0000 restaurant[6262:210307] Could not cast value of type '__NSSingleEntryDictionaryI' (0x1032e6e98) to 'NSArray' (0x1032e7f28).

我知道我想通过访问字典中的数组来做什么，但问题是如何去做。欢迎所有帮助和批评，因为我已经准备好学习。或者有没有一种方法可以尝试仅从数据库中获取数组，而不在餐馆字典中获取数组。谢谢大家

Answer 1

//As per above response


override func viewDidLoad() {
    super.viewDidLoad()

    Alamofire.request(URL_GET_DATA).responseJSON { response in

        if let json = response.result.value as! NSDictionary {

            let restaurantsArray = json["restaurants"] as! NSArray

            for dict in restaurantsArray {

                let ID = (dict as! NSDictionary).value(forKey: "id") as? Int
                //You can get more data like above
            }

            self.tableViewRestaurants.reloadData()
        }
    }
}