快速解析帶有數組的json對象

Question

我有這個JsonResponse：

...id = 7;
levels =     (
            {
        name = "name";
        "unique_id" = 23223;
    },
            {
        name = "name";
        "unique_id" = d32432;
    },
            {
        name = "name";
        "unique_id" = 324;
    },
            {
        name = "name";
        "unique_id" = 234;
    }
);

我正在用它來獲得結果作為字典：

var jsonResult = NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers, error: &err) as! NSDictionary

我的問題是我如何解析關卡數組-迭代對象並獲取數組大小

Answer 1

基本上，您只需遍歷它們：

if(jsonResult)
{
   let levels = jsonResult! as NSDictionary;

    for item in levels {
        let obj = item as NSDictionary

        let name = obj["name"] as NSString;
        let uniqueId = obj["unique_id"] as NSNumber;
    }
}

Answer 2

我建議您在使用JSON時盡可能多地使用類型安全。 這是一個（未經測試的）示例，向您展示如何安全地投射數據：

if let levels = NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers, error: &err) as? [[String: AnyObject]] {
    for elem in levels {
        let name = elem["name"] as? NSString
        let uniqueId = elem["unique_id"] as? NSNumber

    }
}