在ios swift 3.0中解析json对象数组[重复]

Question

尝试在 iOS swift 3.0 中解析 JSON 数组。但是在 XCode 中我总是会看到这个错误：

类型“NSFastEnumerationIterator.Element”（又名“Any”）没有下标成员

我试图解析的数组看起来像这样：

[{"area_code":1,"area_name":"value"},{"area_code":2,"area_name":"value"},{"area_code":3,"area_name":"value"},{"area_code":4,"area_name":"value"}]

iOS 的代码 sn-p 看起来是这样的。

let json = try!JSONSerialization.jsonObject(with: data!, options: .mutableLeaves) as? NSArray

            // The JSONObjectWithData constructor didn't return an error. But, we should still
            // check and make sure that json has a value using optional binding.
            if let parseJSON = json {
                for dayData in parseJSON{

                    let areaObj = AreaCode()

                    if let areaCode = dayData["area_code"] as? Int{
                        areaObj.areaCode = areaCode
                    }
                    if let areaName = dayData["area_name"] as? String{
                        areaObj.areaName = areaName
                    }
                    areaCodeArray.append(areaObj)
                }
                DispatchQueue.main.async(execute: {
                    // perform on main
                    self.onGetAreaList("Success");
                });
            }

Answer 1

用[[String:Any]]代替NSArray试试这种方式

let json = try! JSONSerialization.jsonObject(with: data!, options: []) as? [[String:Any]]

     for dayData in json{
          let areaObj = AreaCode()

          if let areaCode = dayData["area_code"] as? Int{
              areaObj.areaCode = areaCode
          }

          if let areaName = dayData["area_name"] as? String{
               areaObj.areaName = areaName
          }

          areaCodeArray.append(areaObj)