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[英]cannot convert value of type [Struct] to type [string] in coercion swift
[英]Cannot convert value of type '_?' to type '[AFTParty]?' in coercion - Swift
我正在讀取一個返回對象數組的JSON。 我想將JSON響應綁定到我的對象AFTParty,並且我遇到了這個編譯錯誤:
無法轉換'_?'類型的值 輸入'[AFTParty]?'
AFTParty是一個符合Decodable協議的類,我正在使用Himotoki來完成這項工作。
我的JSON:
[
{
id: 1,
partyName: "x",
partyAuthor: [
{
id: 1,
username: "mtfons",
name: "marco",
lastname: "fonseca",
phoneNumber: "91859158",
email: "mt.fonseca23@gmail.com"
}
],
partyDescription: null,
partyStyle: null,
partyPermission: "PUBLICA",
partyLocation: {
id: 1,
latitude: "1248174",
longitude: "1428149"
},
prices: [ ],
partyDetailToJoin: "x",
partyDateBegin: null,
partyDateEnd: null,
partyImagesPath: [ ],
partyParticipants: [
{
id: 1,
username: "x",
name: "x",
lastname: "x",
phoneNumber: "x",
email: "x@gmail.com"
},
{
id: 2,
username: "x",
name: "ajfk",
lastname: "jfa",
phoneNumber: "x",
email: "teste@teste.com"
}
],
time: null,
partyType: null
}
]
給出錯誤的代碼:
let partyDeserializer = AFTPartyDeserializerImplementation(network: network)
describe("Response") {
it("returns party if the network works correctly.") {
var response = [AFTParty]()
partyDeserializer.getParty().on(next: { response = $0 }).start()
}
}
public func getParty() -> SignalProducer<AFTParty, AFTNetworkError> {
let url = AFTRouter.Parties.URL
return network.requestJSON(url, parameters: nil)
.attemptMap { json in
if let response = (try? decodeValue(json)) as [AFTParty]? {
return Result(value: response)
}
else {
return Result(error: .IncorrectDataReturned)
}
}
}
謝謝你的幫助,我很抱歉我的英語不好。
你的意思是
public func getParty() -> SignalProducer<[AFTParty], AFTNetworkError> {
?
如果decodeValue(json)
返回AnyObject
,那么你可能想要使用as?
,不as
。
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