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Artem Tutov
Artem Tutov

Reputation: 2015

Swift - "use of unresolved identifier"

I am studying Swift! I want create Main interface on xib. But have error "use of unresolved identifier".

enter image description here

Add code from MainViewController

import Foundation

public class MainViewController : BaseViewController {

    override func viewWillAppear(animated: Bool) {
        super.viewWillAppear(animated)

        // TODO: Write your test code here
        // ...
    } }

UPD:(Add image) enter image description here

Upvotes: 6

Views: 33926

Answers (4)

Divyansh Jain
Divyansh Jain

Reputation: 378

This same issue happened with me too. I've only one target membership and still, I was getting “use of unresolved identifier”. I build the project and nothing changed.

I tried to uncheck and recheck the target membership and the issue was resolved.

If this doesn't resolve your issue, try building the project, check for typo error or use autocompletion and Quick Help to find recognized identifiers.

Upvotes: 2

wzso
wzso

Reputation: 3905

Just a tip for those who found this question with this issue like mine.

This issue tortured me for days! 😭 I can run the project but the red error sign kept showing up. At first blamed this to Xcode (Sorry, Xcode).

But after I read all the answers in this thread and checked my source file's Target Membership, I realized that I was wrong to blame Xcode.

The file where this issue was reported had three Target Membership: the main one, the one for tests and another for ui tests. But the variable it refer to was in a file that had only one Target Membership, the main one.

So to recap: check the Target Membership of the file where issue is reported, and of the one where the unresolved identifier is declared. Make sure Membership the later contains that of the formal.

Upvotes: 0

Mike
Mike

Reputation: 9835

You likely didn't add the class to the target. Click on the MainViewController class and open the utilities tab on the upper right corner in Xcode:

enter image description here

Make sure the appropriate target is checked.

EDIT: Apparently you don't have target membership there - which is bizarre in and of itself. Try re-creating the MainViewController class from scratch and make sure the correct target is selected:

enter image description here

Upvotes: 0

Breek
Breek

Reputation: 1441

1) Right Click your MainViewController.swift

2) Select Show File Inspector

3) On Right side panel, look at Target Membership

4) Add your class to target by check the box :)

Upvotes: 18

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