Share some text through the OS

MyViewController.swift

func share(_ text: String) {
    let activityVC = UIActivityViewController(activityItems: [text], applicationActivities: nil)
    activityVC.excludedActivityTypes = [UIActivity.ActivityType.airDrop,
                                        UIActivity.ActivityType.addToReadingList]
    self.present(activityVC, animated: true, completion: nil)
}