arrays - "Value of type ' AnyObject ' has no member."..尝试在 Swift 中为数组中的对象赋值时发生错误

Question

首先我创建了一个自定义类:

  class TVInfo {
  var cast : [String]
  var name : String
  var charecterName : String

init (cast: [String], name: String, charecterName: String){

    self.cast = cast
    self.name = name
    self.charecterName = charecterName
 }
}

然后我尝试解析 JSON 数据

 let jsonResult = try NSJSONSerialization.JSONObjectWithData(data!, options: .MutableContainers) as!
      NSDictionary

 let cast = jsonResult.objectForKey("cast") as! NSArray
          for item in cast
          {
          let name = item["name"] as! String
          let charecterName = item["character_name"] as! String

          }
let TV = TVInfo(cast: cast as! [String], name: cast[0].name, charecterName: cast[0].charecterName)

但我不断收到错误“‘AnyObject’类型的值没有成员‘charecterName’”。这很奇怪，因为第一个常量“name”似乎具有值，但它与“characterName”位于同一数组中。如何正确地为characterName常量赋值？

Answer 1

您正在从 item 中提取 name 并从 jsonResult 中提取 character_name，但您尝试忽略结果通过点符号访问属性失败。

我猜你想实现这样的目标

let jsonResult = try NSJSONSerialization.JSONObjectWithData(data!, options: .MutableContainers) as!
  NSDictionary

var infoArray = [TVInfo]()
let cast = jsonResult.objectForKey("cast") as! [[String:String]]
for item in cast {
  let name = item["name"]!
  let charecterName = item["character_name"]!
  let TV = TVInfo(cast: cast, name: name, charecterName: charecterName)
  infoArray.append(TV)
}