SWIFT:无法分配类型... / SwiftyJSON的值

时间:2016-06-20 09:49:49

标签: ios type-conversion swifty-json eureka-forms

我对PushRow有一点问题。 我通过JSON检索我的值,但我不能将它们放在PushRow中:/

我的价值观:

picturebox

1 /声明一个结构来保存id和值:

{
"listValue": [{
    "id": 1,
    "value": "Value 1"
},{
    "id": 2,
    "value": "Value 2"
},{
    "id": 3,
    "value": "Value 3"
}]
}

2 /使其符合Equatable

struct MyStruct {
    var id: Int
    var value: String

    init(id: Int, value: String) {
        self.id = id
        self.value = value
    }
}

3 / Make MyStruct符合CustomStringConvertible

struct MyStruct {
    var id: Int
    var value: String

    init(id: Int, value: String) {
        self.id = id
        self.value = value
    }
}

extension MyStruct: Equatable {}

func ==(lhs: MyStruct, rhs: MyStruct) -> Bool {
    let areEqual = lhs.id == rhs.id &&
        lhs.value == rhs.value

    return areEqual
}

现在,我有一个问题是将json listValue响应转换为MyStruct数组..(不能指定类型'[String:JSON]'的值来键入'[MyStruct]') 怎么做?

在我的代码中,我使用Eureka

struct MyStruct : CustomStringConvertible {
    var id: Int
    var value: String

    init(id: Int, value: String) {
        self.id = id
        self.value = value
    }

    var description: String {
        return "\(self.id)"+" "+"\(self.value)"
    }

}

extension MyStruct: Equatable {}

func ==(lhs: MyStruct, rhs: MyStruct) -> Bool {
    let areEqual = lhs.id == rhs.id &&
        lhs.value == rhs.value

    return areEqual
}

我的listValue是一个JSON(带有SwiftyJSON

你有想法帮助我吗?

2 个答案:

答案 0 :(得分:0)

解决方案#1(带结构):

struct MyStruct : CustomStringConvertible {

    var id: Int
    var value: String

    init(id: Int, value: String) {
        self.id = id
        self.value = value
    }

    var description: String {
        //return "\(self.id)"+" "+"\(self.value)"
        return "\(self.value)"
    }

}

extension MyStruct: Equatable {}

func ==(lhs: MyStruct, rhs: MyStruct) -> Bool {
    let areEqual = lhs.id == rhs.id &&
        lhs.value == rhs.value
    return areEqual
}

var arrayOfMyStruct:[MyStruct] = []
for item in item["listValue"].arrayValue {
    print(item["id"].intValue)
    print(item["value"].stringValue)
    print("#############")
    arrayOfMyStruct.append(MyStruct(id: item["id"].intValue, value: item["value"].stringValue))
}

form.last! // recupère la dernière section
    <<< PushRow<MyStruct>(idItem) {
        $0.title = item["libItem"].stringValue
        $0.options = arrayOfMyStruct
    }

它有效!

解决方案#2(带阵列):

var Liste : [String] = []
for (idvaleur,TabValeur):(String, JSON) in item["listValue"] {
          print(TabValeur["id"])
          print(TabValeur["value"])
          print("#######")
          Liste.append(TabValeur["value"].stringValue)
}

print(Liste)

form.last! // recupère la dernière section
<<< PushRow<String>(idItem) {
     $0.title = item["libItem"].stringValue
     $0.options = Liste
}

答案 1 :(得分:0)

现在,如果你想检索选择的id(而不是显示的内容......即:value)

let valeursFormulaire = self.form.values(includeHidden: true)

for (idvaleur,valeur):(String, Any?) in valeursFormulaire {
    if let laValeur = valeur {

       let typeDeChamps = String(laValeur.dynamicType)

       switch(typeDeChamps){

           case "MyStruct":
                if let rowValue = self.form.rowByTag(idvaleur)?.baseValue as? MyStruct {
                   print("\(rowValue.id)") // id here :)
                }

           default:
                print("\(idvaleur)"+" "+"\(laValeur)")
      }
   }
}