No such module 'UIKit'

Question

All I want to do is make the most basic macOS / OS X app that just shows a WKWebView...

import UIKit
import WebKit
class ViewController: UIViewController, WKUIDelegate {

var webView: WKWebView!

override func loadView() {
    let webConfiguration = WKWebViewConfiguration()
    webView = WKWebView(frame: .zero, configuration: webConfiguration)
    webView.uiDelegate = self
    view = webView
}
override func viewDidLoad() {
    super.viewDidLoad()
    
    let myURL = URL(string: "https://www.apple.com")
    let myRequest = URLRequest(url: myURL!)
    webView.load(myRequest)
}}

But this shows the error:

No such module 'UIKit'

score 45 · Accepted Answer · answered Oct 24 '17 at 03:53

45

UIKit is for mobile apps, not MacOS apps. You want AppKit.

answered Oct 24 '17 at 03:53

cbiggin

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18

Okay. So how do I create a simple WKWebView for my mac app... not for iOS. The code above is clearly for iOS I guess. – Taylor A. Leach Oct 24 '17 at 03:55
1

Delete the `import UIKit` and import AppKit & Cocoa. – cbiggin Oct 24 '17 at 16:33
Now I have 6 errors... including "Use of undeclared type 'UIViewController'" – Taylor A. Leach Oct 24 '17 at 17:43
2

`UIViewController` is part of `UIKit`. You can't use any UIKit class. In this case `UIViewController`'s counterpart in AppKit is `NSViewController` – Anthony Kong Nov 29 '17 at 06:00
I have a mobile app. I'm getting this for a pod. – ScottyBlades May 23 '18 at 02:20

gsk_fs · Answer 2 · 2023-08-31T06:00:22.703

4

First of all your detail shows that you are working on MacOS app, but your Tittle is about UIKit.
APPKit MacOS development and UIKit is for iOS/TabOS.

UIKit cannot be import for MacOS playground environment. Use AppKit
If you are developing for iOS mobile environment and still face issue importing UIKit then you can follow following steps:

If you already selected iOS while creating Playground file but still getting error No such module 'UIKit', then follow following steps. Xcode 13

enter image description here

edited Aug 31 '23 at 06:00

answered Feb 22 '22 at 12:25

gsk_fs

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The question is about building a macOS app, not an iOS app. The error is caused by trying to import UIKit instead of AppKit. – HangarRash Aug 30 '23 at 02:38

score 2 · Answer 3 · edited Jun 07 '19 at 17:29

2

Open utilities from the top right corner
Change the platform to IOS

Then it should be okay to use UIKit

edited Jun 07 '19 at 17:29

Bhavik Modi

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answered Jul 25 '18 at 23:43

Orhan Özkerçin

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14

A helpful screenshot in https://stackoverflow.com/a/49971034/446106 illustrates how to change the platform. Make sure Inspectors (the right-hand sidebar) is open. – mwfearnley Jan 26 '20 at 21:37
The question is about building a macOS app, not an iOS app. The error is caused by trying to import UIKit instead of AppKit. – HangarRash Aug 30 '23 at 02:38

score 1 · Answer 4 · answered Nov 30 '18 at 04:00

Check the 'show utilities' window. If the platform is set to MacOS, you'll get this error if you're calling UIKit. Same thing goes if your wanting IoS and your calling AppKit.

http://iosbrain.com/blog/2018/08/16/xcode-9-playground-error-no-such-module-uikit-or-appkit/

score -1 · Answer 5 · edited Aug 29 '23 at 22:10

-1

Check what device you are using. If you are using macOS instead of an iPhone 14, you will get this fault when you import UIKit. You do not have to reinstall Xcode.

edited Aug 29 '23 at 22:10

M--

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answered Aug 29 '23 at 20:09

Walter Swietlik

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This duplicates essentially every other answer and adds no new content. Please don't post an answer unless you actually have something new to contribute. You can show your support for an answer by upvoting. – Ben A. Sep 01 '23 at 23:03

No such module 'UIKit'

5 Answers5