Share Extension not working when I long press a link - ios

Question

I've built a sharing extension for my iOS app. The goal is to store all URLs user shared in UserDefaults variable. Here is my code:
import UIKit
import Social
import MobileCoreServices
class ShareViewController: SLComposeServiceViewController {
override func viewDidLoad() {
let extensionItem = extensionContext?.inputItems.first as! NSExtensionItem
let itemProvider = extensionItem.attachments?.first as! NSItemProvider
let propertyList = String(kUTTypePropertyList)
if itemProvider.hasItemConformingToTypeIdentifier(propertyList) {
itemProvider.loadItem(forTypeIdentifier: propertyList, options: nil, completionHandler: { (item, error) -> Void in
guard let dictionary = item as? NSDictionary else { return }
OperationQueue.main.addOperation {
if let results = dictionary[NSExtensionJavaScriptPreprocessingResultsKey] as? NSDictionary,
let urlString = results["URL"] as? String,
let url = NSURL(string: urlString) {
print("URL retrieved: \(urlString)")
let userDefaults = UserDefaults(suiteName: "group.my.app")
if userDefaults?.object(forKey: "extensionArticles") == nil {
userDefaults?.setValue([urlString], forKey: "extensionArticles")
} else {
var urls = userDefaults?.object(forKey: "extensionArticles") as? [String]
urls?.append(urlString)
print("im here in the extension")
dump(urls)
userDefaults?.setValue(urls, forKey: "extensionArticles")
}
}
}
})
} else {
print("error")
}
Timer.scheduledTimer(timeInterval: 0.2, target: self, selector: #selector(self.didSelectPost), userInfo: nil, repeats: false)
}
override func isContentValid() -> Bool {
// Do validation of contentText and/or NSExtensionContext attachments here
return true
}
override func didSelectPost() {
// This is called after the user selects Post. Do the upload of contentText and/or NSExtensionContext attachments.
print("posted")
// Inform the host that we're done, so it un-blocks its UI. Note: Alternatively you could call super's -didSelectPost, which will similarly complete the extension context.
self.extensionContext!.completeRequest(returningItems: [], completionHandler: nil)
}
override func configurationItems() -> [Any]! {
// To add configuration options via table cells at the bottom of the sheet, return an array of SLComposeSheetConfigurationItem here.
return []
}
}
When I go to the webpage in Safari and share it being on that page, everything works fine. However, when I long press (aka 3d touch) on a link in Safari, and use my extension from there, it won't add a link to UserDefaults. I couldn't find how to fix this, plz help 😭