将 JSON 解析为快速的预定义数组

Question

我正在尝试从 api (JSON) 获取项目并将其解析为预定义的 swift 数组。我已经搜索了好几个小时，但由于我缺乏技能，我找不到任何适合我的情况。

我的预定义数组如下所示：

init?(participants: String, photoguest: UIImage?, photohome: UIImage?, time: String, stadium: String, channel: String)

JSON结构是这样的(entire json file)：

{"gameId":"255","gameWeek":"17","gameDate":"2016-01-03","awayTeam":"SEA","homeTeam":"ARI","gameTimeET":"4:25 PM","tvStation":"FOX","winner":"SEA"}

我当前的代码如下所示（游戏是我将数组中的变量与表格单元格项目连接起来的类）：

var gameplan = [Games]()

func loadNFLgames(){

    let apiURL = NSURL(string: "http://www.fantasyfootballnerd.com/service/schedule/json/test/")
    let data: AnyObject? = NSData(contentsOfURL: apiURL!)


    let homeTeam = (data as! NSDictionary)["homeTeam"] as! String
    let awayTeam = (data as! NSDictionary)["awayTeam"] as! String
    let gameDate = (data as! NSDictionary)["gameDate"] as! String
    let gameTimeET = (data as! NSDictionary)["gameTimeET"] as! String
    let tvStation = (data as! NSDictionary)["tvStation"] as! String

    /*
    for schleife mit API daten:
        for gameWeek = currentWeek{ //every game where gameWeek matches currentWeek
    */

    // create variables from api calls
    let api_guest = awayTeam
    let api_home = homeTeam
    let api_tvhost = tvStation
    let api_time = gameDate + ", " + gameTimeET + " ET" // convert gameDate to day e.g. SUN
    let api_stadion = "N/A"

    // prepare data for array
    let gamedata = Games(participants: api_guest+" @ "+api_home, photoguest: UIImage(named: api_guest), photohome: UIImage(named: api_home), time: api_time, stadium: api_stadion, channel: api_tvhost)!

    // add data to array
    gameplan.append(gamedata)
}

我收到以下错误：

无法将“_NSInlineData”(0x1a0cfd428) 类型的值转换为 'NSDictionary' (0x1a0cf3380)。

编辑：这里抛出错误：

let homeTeam = (data as! NSDictionary)["homeTeam"] as! String

我们非常感谢您的帮助。 提前致谢！

Answer 1

您好，您的数据变量不包含您要查找的 Json。所以你必须像 alexander 建议的那样将它序列化为 json，但是 NSJSONSerialization 可能会引发错误，所以我们将你放入 try 所以你的代码会是这样的（我建议总是使用 dispatch_async 在后台线程中创建它而不是使用完成闭包来获取你的结果）-->

    func loadNFLgames(completionClosure: (result : [Games]) ->()){
        let queue: dispatch_queue_t = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)
        dispatch_async(queue, {
            let URL = "http://www.fantasyfootballnerd.com/service/schedule/json/test/"
            print(URL)
            if let data = NSData(contentsOfURL: NSURL(string: URL)!){
                if let JsonObject = try? NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers) as! NSMutableDictionary{
                    print(JsonObject)
                    //here you can loop through the JsonObject to get the data you are looking for
                    //when you get your array of Games just pass it the the completion closure like this
completionClosure(result: gameplan)
                }
            }

        })
    }

PS：如果您需要更多帮助，请告诉我。

Answer 2

您的 data 变量是 NSData 类型（不是 NSDictionary）。您必须对其进行转换才能使用它。试试这样的：

let decodedJson = NSJSONSerialization.JSONObjectWithData(data, options: nil) as! NSDictionary

你可以像标准字典一样使用它

let homeTeam = decodedJson["homeTeam"] as! String