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ExtensionDataSharing01-ViewController.swift
import UIKit
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
saveUserDefaults()
}
func saveUserDefaults() {
let sharedDefaults = NSUserDefaults(suiteName: "group.example.DataSharing")
sharedDefaults?.setObject("CS Books Extension", forKey: "ExtensionTitleKey")
sharedDefaults?.synchronize()
}
}
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