我在嘗試在Xcode中運行我的項目時收到錯誤。出於某種原因,「userid」函數不會生成,我對編程相當陌生,所以我不知道如何完成這項工作。簡而言之,給我一個錯誤的線路應該允許用戶登錄到他們的Instagram帳戶以使用該應用程序。我得到讀取使用未解析的標識符(swift)
使用未解決的標識符 「用戶ID」
這裏的錯誤是我的代碼:
if (result.result.isSuccess) {
let json = JSON(result.result.value!)
if (self.loginType == .Instagram) {
if let accessToken = json["access_token"].string, _ = json["user"]["id"].string {
print("Logged into Instagram")
let user = NSEntityDescription.insertNewObjectForEntityForName("User", inManagedObjectContext: self.coreDataStack.context) as! User
user.userID = userID
user.accessToken = accessToken
user.placesType = "Establishment"
user.uberAccessToken = ""
self.coreDataStack.saveContext()
self.performSegueWithIdentifier("unwindToMapView", sender: ["user": user])
}
} else if (self.loginType == .Uber) {
if let accessToken = json["access_token"].string {
print("Logged into Uber")
if let fetchRequest = self.coreDataStack.model.fetchRequestTemplateForName("UserFetchRequest") {
do {
let results = try self.coreDataStack.context.executeFetchRequest(fetchRequest) as! [User]
let user = results.first!
user.uberAccessToken = accessToken
user.uberAccessTokenExpiryDate = NSDate().dateByAddingTimeInterval((60 * 60 * 24) * 30)
user.uberMostRecentRequestID = ""
self.coreDataStack.saveContext()
self.performSegueWithIdentifier("unwindToUberView", sender: ["user": user])
} catch {
self.showAlertWithMessage("Please try again!", title: "Couln't Fetch User", button: "Ok")
print("Couldn't fetch user")
self.close()
哪裏應該userID從哪裏來?你無處可以定義它 –
我會假設你需要在你的'if'語句中做'let userID = json [「user」] [「id」]。string'。 – sbarow
用'userID'替換下劃線字符 – vadian