Error: Type [AnyHashable: Any]? has no subscript members (Swift)

Question

我正在尝试使用 Snapchat 的登录工具包来允许用户使用 Snapchat 登录，但他们的文档给我一个错误。

复制文档得到 "Type '[AnyHashable : Any]?' has no subscript members. The error happens on the "let data = " 行。如果我强制解包资源，则错误移至下一行

let graphQLQuery = "{me{displayName, bitmoji{avatar}, externalId}}"
let variables = ["page": "bitmoji"]

SCSDKLoginClient.fetchUserData(withQuery: graphQLQuery, variables: variables, success: { (resources: [AnyHashable: Any]?) in
    let data = resources["data"] //error here
    let me = data["me"]
    let displayName = me["displayName"]
    let bitmoji = me["bitmoji"]
    let bitmojiAvatarUrl = bitmoji["avatar"]
}, failure: { (error: Error?, isUserLoggedOut: Bool) in
    // handle error
})

如果我打开数据资源和数据，那么错误会移动到我尝试设置 me = data["me"] 的行（错误 = "Type Any has no subscript members"）。然后如果我尝试打开我，错误仍然存在。

例如：

let graphQLQuery = "{me{displayName, bitmoji{avatar}, externalId}}"

let variables = ["page": "bitmoji"]

    SCSDKLoginClient.fetchUserData(withQuery: graphQLQuery, variables: variables, success: { (resources: [AnyHashable: Any]?) in
        guard let response = resources else { return }
        guard let data = response["data"] else { return }
        print(data)
        let me = data["me"] // error here
        let displayName = me["displayName"]
        let bitmoji = me["bitmoji"]
        let bitmojiAvatarUrl = bitmoji["avatar"]
    }, failure: { (error: Error?, isUserLoggedOut: Bool) in
        // handle error
    })

正在打印数据returns:

{
    me =     {
        bitmoji =         {
            avatar = "{URL}";
        };
        displayName = "{NAME}";
        externalId = "{ID}";
    };
}

Answer 1

你必须告诉编译器静态集合类型，因为编译器要证明订阅能力。

if let data = resources["data"] as? [String:Any],
   let me = data["me"] as? [String:Any] {
      let displayName = me["displayName"] as! String
      if let bitmoji = me["bitmoji"] as? [String:Any] {
         let bitmojiAvatarUrl = bitmoji["avatar"] as! String
      }
}

Error: Type [AnyHashable: Any]? has no subscript members (Swift)

Error: Type [AnyHashable: Any]? has no subscript members (Swift)

dictionary

ios

snapchat

swift

swift-dictionary