如何在 Swift 2 中将 Array<String> 添加到 Dictionary<String, AnyObject>

Question

已解决！请参阅本文底部的解决方案

我正在尝试使用 Alamofire 创建一个 JSON 对象以用于我的后端。我可以添加带有字符串值的键，但似乎无法将 Array 的值添加到 AnyObject。我虽然这会非常简单，但我一直无法找到解决方案。

func someFunction(btn: UIButton){

        var someDictionary = Dictionary<String, AnyObject>()
        let someArray = [textField[1].text,textField[2].text,textField[3].text]
        someDictionary["answer"] = textField[0].text
        someDictionary["options"] = someArray as? Array // <---- Can't be assigned to AnyObject

        let url = "http://localhost:3000/api/question"
        Alamofire.request(.POST, url, parameters: someDictionary).responseJSON { response in
            if let JSON = response.result.value as? Dictionary<String, AnyObject>{   
            }
        }

 }

解决方案：删除 as? Array 并创建循环以附加初始化的数组

func someFunction(btn: UIButton){



        var someDictionary = Dictionary<String, AnyObject>()
        var SomeArray = [String]()
        for i in 1...3{                          //created loop to append the textField text
            SomeArray.append(textField[i].text!)
        }
        someDictionary["answer"] = textField[0].text
        someDictionary["options"] = SomeArray // Removed "as? Array"
        let url = "http://localhost:3000/api/question"
        Alamofire.request(.POST, url, parameters: someDictionary).responseJSON { response in
            if let JSON = response.result.value as? Dictionary<String, AnyObject>{
                print("JSON Response From Server-->\(JSON)")


            }
        }

    } 

Answer 1

清理您的项目并再次运行。你的代码对我有用，我可以分配

func someFunction(btn: UIButton){

    var someDictionary = Dictionary<String, AnyObject>()
    let someArray = ["SomeString","SomeString","SomeString"]
    someDictionary["answer"] = textFields[0].text
    someDictionary["options"] = someArray // now you can assign

    let url = "http://localhost:3000/api/question"
    Alamofire.request(.POST, url, parameters: someDictionary).responseJSON { response in
        if let JSON = response.result.value as? Dictionary<String, AnyObject>{
        }
    }

}