Use of Unresolved Identifier in Swift

Question

So I have been making an app  and everything has been working great  But today I made a new class like usual and for some reason in this class I can t access Public Global variable from other classes  All the other classes can  but now when ever I try to make a new class I can t  How would this be fixed   I am using Swift and Xcode 6   Working Class   import UIKit import Foundation import Parse import CoreData  var signedIn   true  class ViewController  UIViewController     New Class   import UIKit  class NewClass  UIViewController        override func viewDidLoad             super viewDidLoad            signedIn   false      But on signedIn   false  I get the error       use of unresolved identifier  signedIn

User · Answer

Another place I ve seen this error is when your project has multiple targets AND multiple bridging headers  If it s a shared class  make sure you add the resource to all bridging headers   A good tip to is to look in the left Issue Navigator panel  the root object will show the target that is issuing the complaint

User · Answer

Because you haven t declared it  If you want to use a variable of another class you must use   override func prepareForSegue segue  UIStoryboardSegue  sender  AnyObject         var DestViewController   ViewController   segue destinationViewController as ViewController     DestViewController signedIn   false     You have to put this code at the end of the NewClass code

User · Answer

My issue was calling my program with the same name as one of its cocoapods  It caused a conflict  Solution  Create a program different name

User · Answer

One possible issue is that your new class has a different Target or different Targets from the other one   For example  it might have a testing target while the other one doesn t  For this specific case  you have to include all of your classes in the testing target or none of them

User · Answer

I did a stupid mistake  I forgot to mention the class as public or open while updating code in cocoapod workspace    Please do check whether accesor if working in separate workspace

User · Answer

For me this error happened because I was trying to call a nested function  Only thing I had to do to have it fixed was to bring the function out to a scope where it was visible

User · Answer

This is not directly to your code sample  but in general about the error  I m writing it here  because Google directs this error to this question  so it may be useful for the other devs   Another use case when you can receive such error is when you re adding a selector to method in another class  eg  private class MockTextFieldTarget   private set  var didCallDoneAction   false      objc func doneActionHandler             didCallDoneAction   true          And then in another class  final class UITextFieldTests  XCTestCase       func testDummyCode             let mockTarget   MockTextFieldTarget           UIBarButtonItem barButtonSystemItem   cancel  target  mockTarget  action  MockTextFieldTarget doneActionHandler                 do something               If in the last line you d simply call  selector cancelActionHandler  instead of  selector MockTextFieldTarget cancelActionHandler   you d get  use of unresolved identifier  error

User · Answer

I got this error for Mantle Framework in my Objective-Swift Project  What i tried is     Check if import  is there in Bridging-Header h file Change the Target Membership for Framework in Mantle h file as shown in below screenshot    Toggle between Private Membership first build the project   end up with errors   Then build the project with Public Membership  for all the frameworks appeared for Mantle h file  you must get success   It is just a bug of building with multiple framework in Objective-C Swift project

User · Answer

Your NewClass inherits from UIViewController  You declared signedIn in ViewController  If you want NewClass to be able to identify that variable it will have to be declared in a class that your NewClass inherits from

User · Answer

In my case  I had an Object-C file which was also in the same Target Membership  I fixed by adding  import  YourObjectCFileHeader h  inside file Bridging-Header h

User · Answer

Once I had this problem after renaming a file  I renamed the file from within Xcode  but afterwards Xcode couldn t find the function in the file  Even a clean rebuild didn t fix the problem  but closing and then re-opening the project got the build to work

User · Answer

Sometimes the compiler gets confused about the syntax in your class  This happens a lot if you paste in source from somewhere else   Try reducing the  unresolved  source file down to the bare minimum  cleaning and building  Once it builds successfully add all the complexity back to your class   This has made it go away for me when re-starting Xcode did not work

User · Answer

Use of Unresolved Identifier  in Swift my also happen when you forgot to import a library  For example I have the error    In which I forgot the UIKit     import UIKit

User · Answer

You forgot to declare the variable  Just put var in front of signedIn   false

User · Answer

If this is regarding a class you created  be sure that the class is not nested   F e    A swift  class A       class ARelated             calling var b   ARelated   will give  Use of unresolved identifier  ARelated    You can either   1  separate the classes if wanted on the same file   A swift  class A       class ARelated        2  Maintain your same structure and use the enclosing class to get to the subclass   var b   A ARelated

[ios] 'Use of Unresolved Identifier' in Swift

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