Question

我有来自FB Graph Request的API响应，无法访问“数据”层之外的名称，描述，开始时间，ID等。

 ({
events =     {
    data =         (
                    {
            description = "This is the description";
            "end_time" = "2020-06-14T01:00:00-0400";
            id = 234258508603994942;
            name = "Event 1";
            place =                 {
                id = 102184499823699;
                location =                     {
                    city = Montreal;
                    country = Canada;
                    latitude = "45.5038";
                    longitude = "-73.5744";
                    state = QC;
                };
                name = "Montreal, Quebec";
            };
            "rsvp_status" = attending;
            "start_time" = "2020-06-11T22:00:00-0400";
        },
                    {
            description = "Doors open at 6pm All methods of delivery will be delayed;
            id = 2456759751111373;
            name = "John Oliver";
            place =                 {
                id = 203030439809517;
                location =                     {
                    city = "San Francisco";
                    country = "United States";
                    latitude = "37.79118";
                    longitude = "-122.41293";
                    state = CA;
                    street = "1111 California St";
                    zip = 94108;
                };
                name = "The Masonic";
            };
            "rsvp_status" = unsure;
            "start_time" = "2020-01-02T19:00:00-0800";
        }
    );
    paging =         {
        cursors =             {
            after = QVFIUnlNRzFiTmwtQk9BRFVmN09OUkxHNWkxzQXNSOGJsWURQb21IdFFITHVXdU5xUC1jTTd5Tml5YVNiS3kyejNWYUk5czJ5dmtn;
            before = QVFIUnE3TVA2S21VVVNNbXlDWGZA2ZAFZAUTXU5h0NGRBS0EtUHB6QWpJNURMU1Q5dTRQV2RhVWJlYS01U3RtdUh0RGcxaDlzOTIzNzF2eTln;
        };
    };
};
id = 2624126090194735;
})

这是无法访问“数据”对象的代码”

if let dictionary = result as? [String: Any] {
    if let dictionary1 = dictionary["events"] as? [String: Any]{
        if let nestedDictionary = dictionary1["data"] as? [String: Any]{
           let eventDescription = nestedDictionary["description"] as? String
           let fbEventId = nestedDictionary["id"] as? String
           let eventName = nestedDictionary["name"] as? String
           let eventStart = nestedDictionary["start_time"] as? String
        }
    }
}

我敢肯定，这不会进入“数据”字典，这使我无法获取事件详细信息，例如描述，ID，名称等。如何访问“数据” ？

Answer 1

如@RajeshKumar在评论中所述，data是字典数组。然后，您可以遍历该数组以获取每个字典和相关值，

if let dictionary = result as? [String: Any] {
    if let dictionary1 = dictionary["events"] as? [String: Any]{
        if let dataList = dictionary1["data"] as? [[String: Any]] {
           dataList.forEach { dictionary in 
               let eventDescription = dictionary["description"] as? String
               let fbEventId = dictionary["id"] as? String
               let eventName = dictionary["name"] as? String
               let eventStart = dictionary["start_time"] as? String
               print(eventDescription)
               print(fbEventId)
               print(eventName)
               print(eventStart)
           }
        }
    }
}

如何在Swift中访问深度嵌套的对象

1 个答案: