Question

首先，我尝试在以下代码中使用JSON序列化，并尝试循环遍历数组中可用的每个项目。但是，它必须是类型转换，我缺少一些东西。以下是我要做的事情的片段：

    let jsonResult = NSJSONSerialization.JSONObjectWithData(data, options:      
    NSJSONReadingOptions.MutableContainers, error: nil) as
            NSDictionary

    var items = [[String:String]()]
    var item: AnyObject
    var authorDictionary: AnyObject

    for var i = 0; i < jsonResult["items"].count; i++ {

                items.append([String:String]())
                items[i]["content"] = item["content"] as? NSString
                items[i]["title"] = item["title"] as? NSString
                items[i]["publishedDate"] = item["published"] as? NSString
                authorDictionary = item["author"]  as NSDictionary
                items[i]["author"] = item["displayName"] as? NSString

     }

Answer 1

要解决您的错误，请更改此信息：

jsonResult["items"]

到此：

(jsonResult["items"] as! NSArray)

Answer 2

对不起，我不是在这里使用我的xcode，而是查看我想到的代码。

let jsonResult = NSJSONSerialization.JSONObjectWithData(data, options:      
NSJSONReadingOptions.MutableContainers, error: nil) as
        NSDictionary

var items = [[String:String]()]
var item: AnyObject
var authorDictionary: AnyObject
if let itemsFromJson:NSArray = jsonResult["items"] as? NSArray
{

    for itemJson in itemsFromJson {

            items.append([String:String]())
            items[i]["content"] = itemJson["content"] as? NSString
            items[i]["title"] = itemJson["title"] as? NSString
            items[i]["publishedDate"] = itemJson["published"] as? NSString
            authorDictionary = itemJson["author"]  as NSDictionary
            items[i]["author"] = itemJson["displayName"] as? NSString

    }

 }

＆＃39; AnyObject＆＃39？;没有名为＆＃39; count＆＃39;的成员编译器错误

2 个答案: